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Home My WebLink AboutOshkosh_Summary_Report_2025_Complete PREPARED BY: PREPARED FOR: City of Oshkosh IDDE Ongoing Screening Summary Report 2025 Inspection Year DECEMBER 1 6 , 202 5 IDDE Ongoing Screening Summary Report 2025 Inspection Year City of Oshkosh Prepared For: City of Oshkosh 215 Church Avenue Oshkosh, WI 54903 Prepared By: Westwood Infrastructure, Inc. 1 Systems Drive Appleton, WI 54914 (920) 735-6900 Project Number: R3000958.03 Date: December 16, 2025 December 12, 2025 1 2025 Ongoing Screening Summary Report City of Oshkosh INTRODUCTION Westwood Professional Services (Westwood) assisted the City of Oshkosh with screening the outfalls in the City’s municipal separate storm sewer system (MS4) for potential illicit discharges. To maintain compliance with their Wisconsin Pollutant Discharge Elimination System (WPDES) permit, 93 outfalls within the City’s jurisdiction were screened. Of the screened outfalls, 27 were major outfalls, 36 were minor outfalls, and 30 were supplemental outfalls. A map and list of the screened outfalls are included in Appendix A. The individual outfall field screening reports for the screened outfalls are contained in Appendix C. For a description of the City’s Illicit Discharge Field Screening Program, please refer to the Ongoing Field Screening Program – 2021 Update (March 2, 2021). The 2021 program contains a comprehensive description of the program, maps depicting the City’s outfalls, and information on how the program complies with the City’s WPDES permit from the Wisconsin Department of Natural Resources (WDNR). SUMMARY OF ILLICIT DISCHARGE PROGRAM’S MEASURABLE GOALS Results for the City’s 2025 Ongoing Field Screening Program are as follows. • 93 of 549 MS4 outfalls (17%) were screened, plus 33 upstream/alternate locations. • 46 outfalls were screened for the first time following an MS4 map update in 2025. • 79 outfalls were characterized as unlikely to have an illicit discharge. • 14 outfalls were characterized as a potential illicit discharge. • No outfalls were characterized as an obvious (confirmed) illicit discharge. • No confirmed illicit discharges were eliminated. The above results reflect the results of the routine outfall screening. Any actions resulting from complaints received by the City will need to be addressed in the corresponding sections of the MS4 Annual Report. OUTFALL INVENTORY As part of the Ongoing Field Screening Program, the City’s inventory of MS4 outfalls is reviewed annually and updated to reflect changes to the MS4, including new development, installation of stormwater management facilities, or street reconstruction. Prior to conducting the scheduled outfall screening, the City’s updated storm sewer mapping is reviewed to identify new, removed, or modified outfalls, and the screening schedule is updated accordingly. Similarly, if differences are identified during the screening process, those changes are made as they are encountered. For each new or modified outfall, a determination is made as to its major/minor status, as well as its priority outfall status. During the winter of 2024-2025, an extensive review of the MS4 map was conducted by Westwood. Based on updated storm sewer mapping provided by the City, several outfalls were removed due to reconstruction, and several new outfalls were identified and added to the screening program. Following the completion of the MW4 map update and the 2025 Ongoing December 12, 2025 2 2025 Ongoing Screening Summary Report City of Oshkosh Field Screening Program, the City’s outfall inventory has been revised and consists of the following: Major/Minor Classification No. of Outfalls Prioritization Classification No. of Outfalls Major Outfalls 97 Priority Outfalls 34 Minor Outfalls 292 Non-Priority Major Outfalls 84 Supplemental Outfalls 160 Non-Priority Non-Major Outfalls 431 Total 549 Total 549 ILLICIT DISCHARGE AND FLOW OBSERVATIONS Of the 93 outfalls that were screened in 2025, 14 outfalls had physical or chemical indicators suggesting a potential or obvious illicit discharge. Those outfalls are summarized in the table below: Outfall Date Flow pH Conductivity (µS/cm) Ammonia (ppm) Total Chlorine (ppm) Free Chlorine (ppm) Detergent (mg/L) Gross Solids Illicit Discharge Potential 01-520 8/5/2025 Submerged (not located) X Potential 01-520 US1 8/5/2025 Submerged, indeterminate 8.06 961 0 0 0 0 Potential 03-173 8/5/2025 Submerged (not located) X Potential 03-173 US1 8/5/2025 Submerged, indeterminate 9.14 345 0 0 0 0 Potential 03-22 8/5/2025 Submerged (not located) X Potential 03-22 US1 8/5/2025 Submerged, indeterminate 9.03 363 0 0 0 0 Potential 03-35 8/5/2025 Submerged (not located) X Potential 03-35 US1 8/5/2025 Submerged, indeterminate 8.98 419 0 0 0 0 Potential 03-81 8/5/2025 Submerged (not located) X Potential 03-81 US1 8/5/2025 Submerged, indeterminate 8.95 303 0 0 0 0 Potential 05-14 9/25/2025 Submerged (not located) X Potential 05-14 US1 9/25/2025 Submerged, indeterminate 8.05 373 0 0 0 0 Potential 11-376 8/5/2025 Submerged (not located) X Potential 11-376 US1 8/5/2025 Submerged, indeterminate 8.44 489 0 0 0 0 Potential 11-512 8/5/2025 Submerged (not located) X Potential December 12, 2025 3 2025 Ongoing Screening Summary Report City of Oshkosh Outfall Date Flow pH Conductivity (µS/cm) Ammonia (ppm) Total Chlorine (ppm) Free Chlorine (ppm) Detergent (mg/L) Gross Solids Illicit Discharge Potential 11-512 US1 8/5/2025 Submerged, indeterminate 8.12 387 0 0 0 0 Potential 12-576 9/25/2025 Submerged (not located) X Potential 12-576 US1 9/25/2025 Submerged, indeterminate 8.14 416 0 0 0 0 Potential 15-3373 9/17/2025 Submerged, indeterminate Potential 15-3373 US1 9/17/2025 Submerged, indeterminate 7.52 703 1 0 0 0.85 Potential 16-1178 9/25/2025 Submerged (not located) X Potential 16-1178 US1 9/25/2025 Submerged, indeterminate 7.75 472 0 0 0 0 Potential 16-844 9/25/2025 Trickle 8.49 2,890 0 0 0 0 Potential 16-941 9/17/2025 Submerged, indeterminate 9.20 470 0 0 0 0 Potential U-110530 8/5/2025 Submerged, indeterminate Potential U-110530 US1 8/5/2025 Submerged, indeterminate 9.08 357 0 0 0 0 Potential Bold entries indicate test results that exceed the action limit for the chemical. Italic entries indicate alternate sampling locations for an outfall. Shaded outfalls indicate outfalls with significant floatable gross solids. The outfalls with potential or obvious illicit discharges are summarized below: • Eight of the 14 outfalls with potential illicit discharges were classified as “Potential” solely due to the presence of moderate or substantial floatable debris (gross solids), including plastic bottles, foam packaging, and other solid waste. This effect was most pronounced at manholes upstream of a fully submerged outfall, where the storm sewer pipes within the manhole were also fully submerged. In these cases, any floatable debris traveling along the top of the storm sewer pipe will enter the manhole and will remain trapped on the surface of the manhole pool, as it is not able to escape through the submerged outfall pipe. All eight of these outfalls with only floating gross solids were already classified as Priority Outfalls, so they are already scheduled to be rescreened in 2026. • Outfalls with elevated pH: Four outfalls were classified as potential illicit discharges due to elevated pH levels in the collected samples. Based on the current version of the Ongoing Field Screening Program (2021), the acceptable pH range for stormwater samples is 6.5 to 9.0. Four samples had pH readings exceeding 9.0: December 12, 2025 4 2025 Ongoing Screening Summary Report City of Oshkosh Sample Location pH Receiving Water 03-22 US1* Nebraska Street 9.03 Fox River 03-173 US1* 16th Ave 9.14 Fox River 16-941 Westhaven Dr 9.20 Detention Basin U-110530 US1 Pioneer Dr (former) 9.08 Fox River *Manholes 03-22 US1 and 03-173 US1 also had significant floating gross solids, which is also a potential illicit discharge indicator. No other chemical indicator parameters were exceeded at any of these outfalls, and no apparent sources of illicit discharge were observed. All four outfalls were connected to receiving waters with significant levels of algae. It has been documented that algae blooms can significantly increase water’s pH because the algae consumes CO2 during photosynthesis, oftentimes scavenging it from the carbonic acid dissolved in the water, thereby raising the pH of the water (sometimes up to levels of 10 or 11). In the absence of other illicit discharge evidence, it was assumed that the ongoing algae blooms were the source of the increased pH, and no further investigation was conducted. Three of the four impacted outfalls were already classified as Priority Outfalls, so they are screened annually. The fourth (U-110530) was classified as a non-priority non-major outfall and will be added to the 2026 screening schedule. • Outfall 15-3373 (Comet Street) consists of a 27” reinforced concrete pipe (RCP) that discharges to the south side of a detention basin located north of Comet Street. This outfall had detergent concentrations of 0.25 mg/L and 0.9 mg/L during the 2023 and 2024 screenings, respectively. During the 9/17/2025 screening, the outfall was partially submerged, so a sample was collected from the submerged pool in the first upstream location (curb inlet). This sample had a detergent concentration of 0.85 mg/L and 1 mg/L ammonia. The next upstream location (another curb inlet) was dry, so no additional tracking could be conducted. Additional sampling was conducted on 9/25/2025, and the sample from Comet Street once again had detergent (0.6 mg/L) and ammonia (3 ppm), with no incoming flows. A sample was also collected one block west from the Geneva Street outfall – which is connected to the same detention basin – and there were no detections. The findings were forwarded to the City on 7/20/2025, with a recommendation that the City televise the storm sewer along Comet Street to search for any undocumented laterals or other potential sources of detergent-containing discharge. On 10/1/2025, the City reported that the televising revealed a potential lateral from 2328 Comet Street that may warrant additional dye testing by the City. This outfall is classified as a Priority Outfall, primarily due to the recurring detergent detections. As a result, the outfall is already scheduled to be rescreened in 2026. • Outfall 16-844 (Koeller Street) consists of an 18” RCP that discharges to the south side of the stream, immediately east of the Koeller Street bridge. This outfall has historically had elevated conductivity and/or detergent detections; however, repeated upstream tracking has never produced a conclusive source of the flow. During the 9/25/2025 December 12, 2025 5 2025 Ongoing Screening Summary Report City of Oshkosh screening, a sample collected from the outfall had a conductivity of 2,890 µS/cm, which exceeds the 2,000 µS/cm action level. Due to the history at the outfall, no additional tracking was conducted in 2025. The outfall is classified as a Priority Outfall, primarily due to the recurring high conductivity results and occasional detergent detections. As a result, the outfall is already scheduled to be rescreened in 2026. Maps of the drainage areas for the outfalls with potential or obvious illicit discharges are included in Appendix B, along with relevant correspondence with the City. INVESTIGATIONS OUTSIDE OF ONGOING SCREENING PROGRAM In addition to the outfall screening and tracking activities conducted as part of the 2025 ongoing screening program, Westwood assisted the City with the investigation and/or tracking of two additional potential illicit discharge issues during the 2025 calendar year: • Clark-Hill Farm Drain Tile Discharge (August 2025) The City excavated a new detention basin on the west side of Clairville Road, just north of Compass Way. During excavation, an existing drain tile line was cut. Flow from that drain tile accumulated in the excavated pond, and the pooled water had significant algae blooms on the surface. On August 6, Casey Canady from the City of Oshkosh requested that Westwood collect a sample of the discharge from the cut drain tile to determine if it was a potential illicit discharge or other cause of concern. Westwood collected a sample from the actively- flowing drain tile on August 7 and tested it for the standard IDDE screening parameters, along with nitrates, nitrites and phosphates. The results of the testing are summarized below: Analyte Result Temperature 68 °F pH 7.71 Conductivity 1290 µS/cm Free Chlorine 0 ppm Total Chlorine 0 ppm Detergent 0 mg/L Ammonia 0 ppm Copper 0 ppm Nitrate Nitrogen 2 ppm Nitrite Nitrogen 0 ppm Phosphate 5 ppm The test results are consistent with agricultural runoff. The results were forwarded to the City on August 7, and the City took the lead on any follow-up with the drain tile discharge. Outfall 16-1508 (N Westfield St / Red Arrow Park) (October 2025) Westwood’s assistance was requested by the City on October 9 following the discovery of a cloudy discharge into the stream downstream of outfall 16-1508. This Priority December 12, 2025 6 2025 Ongoing Screening Summary Report City of Oshkosh Outfall had recently been screened on September 25 as part of the 2025 ongoing screening program, with no potential illicit discharges detected. Westwood mobilized to begin an investigation on October 9. Upon arriving at the outfall, Westwood encountered City crews who had just located a watermain break in the area. The watermain break was discharging high-turbidity water into the storm sewer system, which was then discharging to the stream at outfall 16-1508. No additional illicit discharge investigation was conducted. Reports and documentation from each of these investigations were submitted to the City at the conclusion of each investigation. NON-ILLICIT DISCHARGE OBSERVATIONS The ongoing screening identified five outfalls with some degree of visible damage, 30 outfalls with deposition, three with downstream erosion, and two with nearby graffiti. While none of these posed an immediate danger, the City will likely want to address these issues as part of the regular storm sewer system maintenance. Appendix D contains lists, maps, and photos of outfalls with non-illicit discharge concerns. FUTURE FIELD SCREENING The general screening schedule approach is outlined in the Ongoing Field Screening Program – 2021 Update. The outfalls within the City’s jurisdiction that are deemed “priority” are to be screened every year and the major outfalls that are deemed “non-priority” are to be screened every five years. Non-priority, non-major outfalls are to be screened every ten years. A preliminary screening schedule was developed as part of the Ongoing Field Screening Program. This screening schedule is updated each year as outfalls are added, removed, or reclassified. In addition, any non-priority outfalls with potential illicit discharges are scheduled for a repeat screening in the following year. Any outfalls listed as “potential” or “obvious” illicit discharges during the 2025 screening year will be rescreened in 2026, regardless of their priority status. With the exception of outfall U-110284, all outfalls that were identified as “potential” or “obvious” illicit discharges in 2025 were priority outfalls, which would already be included in the 2026 screening. The one additional non-priority outfall has been added to the 2026 screening schedule. Based on the latest revisions, the proposed 2026 screening schedule includes 101 outfalls: • 34 Priority outfalls • 16 Non-priority major outfalls • 51 Non-priority non-major outfalls (including U-110284 rescreening) The updated screening schedule is included in Appendix A. The City of Oshkosh reserves the right to revise the screening schedule as long as the goals of the screening frequency are achieved. December 12, 2025 7 2025 Ongoing Screening Summary Report City of Oshkosh STANDARD OF CARE The conclusions presented in this report were arrived at using generally accepted engineering practices. The conclusions presented herein represent our professional opinions, based on data collected at the time of the inspections, at the specific inspection locations discussed in this report. Conditions at other locations in the City or at different times may be different than described in this report. The scope of this report is limited to the specific project and the inspection locations described herein. Prepared By: Jason Weis, P.E. Project Engineer Reviewed By: Brian D. Wayner, P.E. Environmental Service Leader Appendix A Outfall Information Outfall Inspection Map Outfall Screening Summary Table Potential and Obvious Illicit Discharge Map Outfall Screening Schedule ! ! !!!!! !!! !! !! ! !!! !!! ! ! ! !! !! ! ! ! ! !! ! ! ! !!! !!!!!!! ! ! ! !! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! !! ! ! ! ! ! ! ! ! !! !! ! ! ! 16-844 14-996 FernauPond 12-925 13-68 13-1283 13-109813-1174 16-1508 12-576 15-2243 02-357 11-512 05-14 13-471 11-376 03-119 06-810 11-17716-941 16-995 06-829 16-594 16-1178 12-569 03-173 13-1588 13-2736 13-1552 13-2563 12-2042 16-120516-1628 06-2947 03-604 03-477 05-670 15-3339 15-3373 06-3027 U-43661 U-44156U-43837 U-43543 U-43361 U-44238 U-44085 U-44119U-44117U-43858 U-43616U-43982 U-43347U-43456 U-44142U-44053 U-43845 U-43808 U-44189 U-43942 U-43603 U-44011 U-43975 U-43698 U-44101 U-43484 U-43800 U-43708 Screened Outfalls !Priority (32) !Non-priority Major (14) !Non-priority Non-major (47) F:\ENVIRO\IDDE\GIS\InspectedOutfalls_Oshkosh.mxd PROJECT NO.R3000958.03 FIGURE NO.A-1 SCALE:1 " = 5,047 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING PROGRAM CITY OF OSHKOSHWINNEBAGO COUNTY, WISCONSIN 2025 OUTFALL INSPECTION MAP.Date:11/26/2025 Printed: JCWeis 11/26/2025 1:30:17 PM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com 01-520 03-81 03-3503-22 06-5206-2296 09-107 U-44026U-43822U-44131 U-43887U-44005 U-112427U-112428U-110530 !!! ! ! !!!! ! U-110619U-110619w U-111659 U-43443 U-44109U-43703 U-44062 U-43406 U-43660 U-43713 Outfall Screening Summary Outfall ID Priority Class*Inspection Date Inspection Type Flow Description pH Conductivity (µS/cm) Ammonia (ppm) Total Chlorine (ppm) Free Chlorine (ppm) Detergent (mg/L) Illicit Discharge Potential sOutfallID sPriorityClass dtInspect sInspType iFlow_Desc dSamPH_fld dSamCond_Fld dSamAmm_fld dSamClTot_fld dSamClFr_fld dSamDet_lab sIDDEpot 01-520 P 8/5/2025 Ongoing Submerged (not located)Potential 01-520 US1 8/5/2025 Ongoing Submerged, indeterminate 8.06 961 0 0 0 0 Potential 02-357 P 8/5/2025 Ongoing Submerged (not located)Unlikely 02-357 US1 8/5/2025 Ongoing Submerged, indeterminate 8.47 399 0 0 0 0 Unlikely 03-119 P 8/5/2025 Ongoing Submerged (not located)Unlikely 03-119 US1 8/5/2025 Ongoing Submerged, indeterminate 8.29 340 0 0 0 0 Unlikely 03-173 P 8/5/2025 Ongoing Submerged (not located)Potential 03-173 US1 8/5/2025 Ongoing Submerged, indeterminate 9.14 345 0 0 0 0 Potential 03-22 P 8/5/2025 Ongoing Submerged (not located)Potential 03-22 US1 8/5/2025 Ongoing Submerged, indeterminate 9.03 363 0 0 0 0 Potential 03-35 P 8/5/2025 Ongoing Submerged (not located)Potential 03-35 US1 8/5/2025 Ongoing Submerged, indeterminate 8.98 419 0 0 0 0 Potential 03-477 P 8/5/2025 Ongoing Submerged, indeterminate Unlikely 03-477 US1 8/5/2025 Ongoing Submerged, indeterminate 8.97 301 0 0 0 0 Unlikely 03-604 P 8/5/2025 Ongoing Submerged (not located)Unlikely 03-604 US1 8/5/2025 Ongoing Submerged, indeterminate 8.31 238 0.5 0 0 0 Unlikely 03-81 P 8/5/2025 Ongoing Submerged (not located)Potential 03-81 US1 8/5/2025 Ongoing Submerged, indeterminate 8.95 303 0 0 0 0 Potential 05-14 P 9/25/2025 Ongoing Submerged (not located)Potential 05-14 US1 9/25/2025 Ongoing Submerged, indeterminate 8.05 373 0 0 0 0 Potential 05-670 NPM 9/25/2025 Ongoing Submerged, indeterminate 8.48 407 0 0 0 0 Unlikely 06-2296 NPM 8/5/2025 Ongoing Submerged, indeterminate Unlikely 06-2296 US1 8/5/2025 Ongoing Submerged, indeterminate 8.61 385 0 0 0 0 Unlikely 06-2947 NPNM 8/7/2025 Ongoing None Unlikely 06-3027 P 8/7/2025 Ongoing Submerged, significant flow 8.72 941 0 0 0 0 Unlikely 06-52 P 8/5/2025 Ongoing Submerged (not located)Unlikely 06-52 US1 8/5/2025 Ongoing Submerged, indeterminate 8.83 341 0 0 0 0 Unlikely 06-810 P 8/5/2025 Ongoing Submerged (not located)Unlikely 06-810 US1 8/5/2025 Ongoing Submerged, indeterminate 8.69 340 0 0 0 0 Unlikely 06-829 P 9/17/2025 Ongoing Submerged (not located)Unlikely 06-829 US1 9/17/2025 Ongoing Submerged, indeterminate 7.82 1,667 0 0 0 0 Unlikely 09-107 NPM 8/5/2025 Ongoing Submerged, indeterminate 8.88 919 0 0 0 0 Unlikely 11-177 P 8/5/2025 Ongoing Submerged (not located)Unlikely 11-177 US1 8/5/2025 Ongoing Submerged, indeterminate 8.53 381 0 0 0 0 Unlikely 11-376 P 8/5/2025 Ongoing Submerged (not located)Potential 11-376 US1 8/5/2025 Ongoing Submerged, indeterminate 8.44 489 0 0 0 0 Potential 11-512 P 8/5/2025 Ongoing Submerged (not located)Potential 11-512 US1 8/5/2025 Ongoing Submerged, indeterminate 8.12 387 0 0 0 0 Potential 12-2042 NPM 9/25/2025 Ongoing None Unlikely Page 1 of 4 Printed 12/8/2025 Outfall Screening Summary Outfall ID Priority Class*Inspection Date Inspection Type Flow Description pH Conductivity (µS/cm) Ammonia (ppm) Total Chlorine (ppm) Free Chlorine (ppm) Detergent (mg/L) Illicit Discharge Potential 12-569 P 9/25/2025 Ongoing Submerged (not located)Unlikely 12-569 US1 9/25/2025 Ongoing Submerged, indeterminate 7.98 466 0 0 0 0 Unlikely 12-576 P 9/25/2025 Ongoing Submerged (not located)Potential 12-576 US1 9/25/2025 Ongoing Submerged, indeterminate 8.14 416 0 0 0 0 Potential 12-925 NPM 9/25/2025 Ongoing Submerged, indeterminate 8.43 1,074 0 0 0 0 Unlikely 13-1098 P 8/7/2025 Ongoing Submerged, slight flow 7.59 1,483 0 0 0 0 Unlikely 13-1174 NPM 8/7/2025 Ongoing Submerged, indeterminate Unlikely 13-1174 US1 8/7/2025 Ongoing Submerged, indeterminate 8.54 1,880 0 0 0 0 Unlikely 13-1283 NPM 8/7/2025 Ongoing Submerged, indeterminate Unlikely 13-1283 US1 8/7/2025 Ongoing Submerged, slight flow 7.75 1,086 0 0 0 0 Unlikely 13-1552 NPM 8/7/2025 Ongoing None Unlikely 13-1588 P 8/7/2025 Ongoing Submerged, slight flow 7.54 755 0 0 0 0 Unlikely 13-2563 NPM 8/7/2025 Ongoing None Unlikely 13-2736 NPM 8/7/2025 Ongoing Submerged, indeterminate Unlikely 13-2736 US2 8/7/2025 Ongoing Submerged, indeterminate 8.73 960 0 0 0 0 Unlikely 13-471 P 9/25/2025 Ongoing Submerged, significant flow 8.46 507 0 0 0 0 Unlikely 13-68 NPM 8/7/2025 Ongoing None Unlikely 14-996 P 8/5/2025 Ongoing None Unlikely 14-996 US1 8/5/2025 Ongoing Submerged, indeterminate 8.20 868 0 0 0 0 Unlikely 15-2243 NPM 9/25/2025 Ongoing Submerged, indeterminate 7.74 1,231 0 0 0 0 Unlikely 15-3339 P 9/17/2025 Ongoing Submerged, slight flow 7.99 1,808 0 0 0 0 Unlikely 15-3373 P 9/17/2025 Ongoing Submerged, indeterminate Potential 15-3373 US1 9/17/2025 Ongoing Submerged, indeterminate 7.52 703 1 0 0 0.85 Potential 16-1178 P 9/25/2025 Ongoing Submerged (not located)Potential 16-1178 US1 9/25/2025 Ongoing Submerged, indeterminate 7.75 472 0 0 0 0 Potential 16-1205 P 9/17/2025 Ongoing Submerged, indeterminate 7.79 1,240 0 0 0 0 Unlikely 16-1508 NPM 9/25/2025 Ongoing Submerged, significant flow 8.36 893 0 0 0 0 Unlikely 16-1628 P 9/17/2025 Ongoing None Unlikely 16-594 P 9/25/2025 Ongoing Submerged (not located)Unlikely 16-594 US1 9/25/2025 Ongoing Submerged, indeterminate 8.16 389 0 0 0 0 Unlikely 16-844 P 9/25/2025 Ongoing Trickle 8.49 2,890 0 0 0 0 Unlikely 16-941 P 9/17/2025 Ongoing Submerged, indeterminate 9.20 470 0 0 0 0 Potential 16-995 P 9/17/2025 Ongoing Submerged, indeterminate Unlikely 16-995 US1 9/17/2025 Ongoing Submerged, indeterminate 7.08 151 0 0 0 0 Unlikely FernauPond NPM 9/25/2025 Ongoing None Unlikely U-110530 NPNM 8/5/2025 Ongoing Submerged, indeterminate Potential U-110530 US1 8/5/2025 Ongoing Submerged, indeterminate 9.08 357 0 0 0 0 Potential U-110619 NPNM 8/5/2025 Ongoing None Unlikely U-110619w NPNM 8/5/2025 Ongoing None Unlikely U-111659 NPNM 8/5/2025 Ongoing None Unlikely Page 2 of 4 Printed 12/8/2025 Outfall Screening Summary Outfall ID Priority Class*Inspection Date Inspection Type Flow Description pH Conductivity (µS/cm) Ammonia (ppm) Total Chlorine (ppm) Free Chlorine (ppm) Detergent (mg/L) Illicit Discharge Potential U-112427 NPNM 8/5/2025 Ongoing Submerged, indeterminate Unlikely U-112428 NPNM 8/5/2025 Ongoing Submerged, indeterminate Unlikely U-43347 NPNM 8/7/2025 Ongoing None Unlikely U-43361 NPNM 9/25/2025 Ongoing None Unlikely U-43406 NPNM 9/17/2025 Ongoing None Unlikely U-43443 NPNM 9/17/2025 Ongoing None Unlikely U-43456 NPNM 9/25/2025 Ongoing None Unlikely U-43484 NPNM 8/7/2025 Ongoing Trickle 8.64 989 0 0 0 0 Unlikely U-43543 NPNM 9/25/2025 Ongoing None Unlikely U-43603 NPNM 9/17/2025 Ongoing None Unlikely U-43616 NPNM 8/7/2025 Ongoing None Unlikely U-43660 NPNM 9/17/2025 Ongoing None Unlikely U-43661 NPNM 9/25/2025 Ongoing None Unlikely U-43698 NPNM 8/7/2025 Ongoing None Unlikely U-43703 NPNM 9/17/2025 Ongoing None Unlikely U-43708 NPNM 9/17/2025 Ongoing Submerged, indeterminate 7.91 1,328 0 0 0 0 Unlikely U-43713 NPNM 9/17/2025 Ongoing Submerged, no flow Unlikely U-43800 NPNM 8/7/2025 Ongoing None Unlikely U-43808 NPNM 9/17/2025 Ongoing Submerged, indeterminate 8.91 768 0 0 0 0 Unlikely U-43822 NPNM 8/5/2025 Ongoing Submerged, indeterminate Unlikely U-43822 US1 8/5/2025 Ongoing None Unlikely U-43837 NPNM 9/17/2025 Ongoing None Unlikely U-43845 NPNM 9/25/2025 Ongoing Submerged, no flow 7.84 414 0 0 0 0 Unlikely U-43858 NPNM 8/7/2025 Ongoing None Unlikely U-43887 NPNM 8/5/2025 Ongoing Submerged, indeterminate Unlikely U-43887 US1 8/5/2025 Ongoing Submerged, indeterminate 8.79 368 0 0 0 0 Unlikely U-43942 NPNM 9/17/2025 Ongoing Submerged (not located)Unlikely U-43942 US1 9/17/2025 Ongoing Submerged, indeterminate 7.74 935 0 0 0 0 Unlikely U-43975 NPNM 9/17/2025 Ongoing None Unlikely U-43982 NPNM 8/7/2025 Ongoing None Unlikely U-44005 NPNM 8/5/2025 Ongoing Submerged (not located)Unlikely U-44005 US1 8/5/2025 Ongoing Submerged, indeterminate 8.52 388 0 0 0 0 Unlikely U-44011 NPNM 9/17/2025 Ongoing Substantial 8.08 1,275 0 0 0 0 Unlikely U-44026 NPNM 8/5/2025 Ongoing Submerged, indeterminate Unlikely U-44053 NPNM 9/25/2025 Ongoing None Unlikely U-44062 NPNM 9/17/2025 Ongoing None Unlikely U-44085 NPNM 8/7/2025 Ongoing None Unlikely U-44101 NPNM 8/7/2025 Ongoing None Unlikely U-44109 NPNM 9/17/2025 Ongoing None Unlikely U-44117 NPNM 8/7/2025 Ongoing None Unlikely Page 3 of 4 Printed 12/8/2025 Outfall Screening Summary Outfall ID Priority Class*Inspection Date Inspection Type Flow Description pH Conductivity (µS/cm) Ammonia (ppm) Total Chlorine (ppm) Free Chlorine (ppm) Detergent (mg/L) Illicit Discharge Potential U-44119 NPNM 8/7/2025 Ongoing None Unlikely U-44131 NPNM 8/5/2025 Ongoing Submerged (not located)Unlikely U-44131 US1 8/5/2025 Ongoing Submerged, indeterminate 8.09 790 0 0 0 0 Unlikely U-44142 NPNM 9/25/2025 Ongoing None Unlikely U-44156 NPNM 9/17/2025 Ongoing None Unlikely U-44189 NPNM 9/17/2025 Ongoing None Unlikely U-44238 NPNM 9/25/2025 Ongoing None Unlikely *Priority Class: P = Priority Outfall NPM = Non-Priority Outfall NPNM = Non-Priority Non-Major Outfall Page 4 of 4 Printed 12/8/2025 City of Oshkosh MS4 Annual Report - IDDE Program Summary 1/1/2025 to 12/31/2025 Total outfalls in inventory:549 Major outfalls 97 Minor outfalls 292 Supplemental outfalls 160 Priority outfalls 34 Non-priority major outfalls 84 Non-priority non-major outfalls 431 (current through 12/5/2025) Reporting Period: Total outfalls screened during period:93 % of total outfalls:17% Add'l upstream locations screened:33 Not submerged:41 % of inspected outfalls:44% Partially submerged:18 % of inspected outfalls:19% Submerged status of screened outfalls Fully submerged:34 % of inspected outfalls:37% Unlikely:79 % of inspected outfalls:85% Illicit discharge potential of screened outfalls Potential:14 % of inspected outfalls:15% Obvious:% of inspected outfalls: None 14 % of upstream manholes:42% Gross solids severity in upstream manholes Minor 9 % of upstream manholes:27% Moderate 5 % of upstream manholes:15% Severe 5 % of upstream manholes:15% Total samples collected during period:50 % of inspected outfalls:54% Flow samples 10 % of samples:20% Pool samples 40 % of samples:80% Parameter Ammonia (ppm)0 Min 1 Max Action level 1 # of samples exceeding action level 1 Free chlorine (mg/L)0 0 detection 0 Total chlorine (mg/L)0 0 detection 0 Detergent (mg/L)0 0.85 detection 1 Conductivity (µS/cm)151 2,890 2,000 1 pH (pH units)7.08 9.20 < 6.0 or > 9.0 4 Temperature (°F)71 84 No flow (dry)39 % of inspected outfalls:42% Flow status of screened outfalls Trickle flow 2 % of inspected outfalls:2% Moderate flow % of inspected outfalls: Substantial flow 1 % of inspected outfalls:1% Submerged 29 % of inspected outfalls:31% Not located 22 % of inspected outfalls:24% Major outfalls 27 Minor outfalls 36 Supplemental outfalls 30 Priority outfalls 32 Non-priority major outfalls 14 Non-priority non-major outfalls 47 Page 112/5/2025 Outfall Screening History City of Oshkosh Not inspected Unlikely illicit discharge Potential illicit discharge Obvious illicit discharge Row Labels 20 0 9 20 1 0 20 1 1 20 1 2 20 1 3 20 1 4 20 1 5 20 1 6 20 1 7 20 1 8 20 1 9 20 2 0 20 2 1 20 2 2 20 2 3 20 2 4 20 2 5 01-520 02-357 03-119 03-173 03-22 03-35 03-477 03-604 03-81 05-14 05-670 06-2296 06-2947 06-3027 06-52 06-810 06-829 09-107 11-177 11-376 11-512 12-2042 12-569 12-576 12-925 13-1098 13-1174 13-1283 13-1552 13-1588 13-2563 13-2736 13-471 13-68 14-996 15-2243 15-3339 15-3373 16-1178 Outfall Screening History City of Oshkosh Not inspected Unlikely illicit discharge Potential illicit discharge Obvious illicit discharge Row Labels 20 0 9 20 1 0 20 1 1 20 1 2 20 1 3 20 1 4 20 1 5 20 1 6 20 1 7 20 1 8 20 1 9 20 2 0 20 2 1 20 2 2 20 2 3 20 2 4 20 2 5 16-1205 16-1508 16-1628 16-594 16-844 16-941 16-995 FernauPond U-110530 U-110619 U-110619w U-111659 U-112427 U-112428 U-43347 U-43361 U-43406 U-43443 U-43456 U-43484 U-43543 U-43603 U-43616 U-43660 U-43661 U-43698 U-43703 U-43708 U-43713 U-43800 U-43808 U-43822 U-43837 U-43845 U-43858 U-43887 U-43942 U-43975 U-43982 Outfall Screening History City of Oshkosh Not inspected Unlikely illicit discharge Potential illicit discharge Obvious illicit discharge Row Labels 20 0 9 20 1 0 20 1 1 20 1 2 20 1 3 20 1 4 20 1 5 20 1 6 20 1 7 20 1 8 20 1 9 20 2 0 20 2 1 20 2 2 20 2 3 20 2 4 20 2 5 U-44005 U-44011 U-44026 U-44053 U-44062 U-44085 U-44101 U-44109 U-44117 U-44119 U-44131 U-44142 U-44156 U-44189 U-44238 " " " " " " " " # # # # # # 01-520 12-576 11-512 05-14 16-1178 11-376 03-8103-35 16-844 03-22 16-941 03-173 15-3373 U-110530 IDDE Potential #Potential (Physical/Chemical) (6) #Obvious (Physical/Chemical) (0) "Potential - Gross Solids Only (8) F:\ENVIRO\IDDE\GIS\IDDEpot_Oshkosh.mxd PROJECT NO.R3000958.03 FIGURE NO.A-2 SCALE:1 " = 5,047 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING PROGRAM CITY OF OSHKOSHWINNEBAGO COUNTY, WISCONSIN OUTFALLS WITH POTENTIALILLICIT DISCHARGES.Date:12/2/2025 Printed: JCWeis 12/2/2025 9:35:17 AM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! !!!! !! ! !! ! !! ! !!!!! !! !! ! ! !! ! ! !!!! ! ! !!!!!!!! ! ! ! ! ! ! 16-844 14-996 15-1217 13-1098 01-520 12-576 02-357 11-512 08-347 05-14 13-471 11-376 03-119 03-81 03-35 03-22 06-810 11-177 16-941 15-2292 16-995 06-829 16-594 16-1178 12-569 03-173 06-52 08-284 13-1588 13-1769 12-2581 12-2551 12-2538 05-621 11-1180 03-60403-477 13-3905 13-906 06-2739 12-2133 13-3820 15-3339 15-3373 15-1277W 13-2371 Wash41_03 06-3027 U-44258 U-110530 U-43571 U-43488U-43555 U-43478 U-44174 U-44215 U-44091 U-44243 U-43341U-43519 U-43774 U-44164 U-44079 U-43764 U-48076 U-48077 U-48090 U-43482 U-110284 U-43690U-43995 U-43385U-43958 U-44260 U-44023 U-43814 U-43611 U-43532 U-44172 U-43679 PROJECT NO.R3000958.03 FIGURE NO.A-3 SCALE:1 " = 3,013 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING CITY OF OSHKOSHWINNEBAGO COUNTY, WISCONSIN 2026 SCHEDULED OUTFALL SCREENING.Date:12/12/2025 F:\ENVIRO\IDDE\GIS\Schedule_OshkoshMap.mxdPrinted: JCWeis 12/12/2025 11:03:10 AM Municipal Boundary !Priority Outfall (34) !Non-Priority Major Outfall (16) !Non-Priority Non-Major Outfall (51) 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com ! ! ! ! ! ! ! !! ! ! ! ! !!!! ! ! ! ! 16-120516-1628 U-43785 U-43786 U-43882 U-43613 U-43554 U-43790U-44022U-43536 U-43598 U-43644 U-43841U-43915U-43705 U-43947U-43709U-43527U-43856 U-44083 U-44060 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 01-132 NPNM 2012 X 01-35 NPNM 2018 01-360 NPM 2024 01-380 NPNM 2015 01-520 P 2025 X X 01-642 NPM 2023 01-656 NPNM 2016 01-696 NPNM 2024 01-713 NPNM 2022 01-722 NPNM 2018 02-309 NPNM 2024 02-322 NPNM 2015 02-357 P 2025 X X 02-386 NPNM 2015 02-419 NPNM 2015 03-119 P 2025 X X 03-173 P 2025 X X 03-22 P 2025 X X 03-35 P 2025 X X 03-382 NPNM 2018 03-385 NPNM 2018 03-387 NPNM 2018 03-477 P 2025 X X 03-604 P 2025 X X 03-81 P 2025 X X 05-14 P 2025 X X 05-155 NPM 2024 05-241 NPNM 2024 05-621 NPM 2021 X 05-670 NPM 2025 06-1028 NPNM 2017 06-1083 NPNM 2017 06-1090 NPNM 2017 06-1136 NPM 2023 06-1149 NPNM 2017 06-1392 NPNM 2022 06-1394 NPNM 2022 06-1404 NPNM 2022 06-1475 NPNM 0 06-1476 NPNM 0 06-1477 NPNM 2022 06-1485 NPNM 0 06-1495 NPNM 2024 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 06-1562 NPNM 2023 06-1601 NPNM 2022 06-1619 NPNM 2022 06-1633 NPNM 2022 06-1636 NPNM 2022 06-1694 NPNM 2014 06-1696 NPM 2023 06-1709 NPNM 2024 06-1746 NPM 2024 06-1814 NPNM 2017 06-1816 NPNM 2017 06-216 NPNM 2019 06-221 NPNM 2024 06-2241 NPM 2023 06-2296 NPM 2025 06-2632 NPNM 2022 06-2739 NPM 2021 X 06-2756 NPNM 2022 06-2798 NPNM 2023 06-2804 NPNM 2022 06-2893 NPNM 0 06-2927 NPNM 2022 06-2933 NPNM 2022 06-2947 NPNM 2025 06-2955 NPNM 2022 06-2957 NPNM 2022 06-2960 NPNM 2022 06-2961 NPNM 2022 06-3 NPNM 2017 06-3027 P 2025 X X 06-471 NPNM 2023 06-473 NPNM 2023 06-478 NPNM 2023 06-489 NPM 2023 06-494 NPNM 2019 06-52 P 2025 X X 06-588 NPNM 2018 06-602 NPNM 2023 06-610 NPNM 2023 06-622a NPNM 2017 06-65 NPNM 2022 06-745 NPNM 2023 06-795 NPNM 2023 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 06-798 NPNM 2023 06-810 P 2025 X X 06-829 P 2025 X X 06-880 NPNM 2017 06-961 NPNM 2017 06-968 NPNM 2017 06-977 NPNM 2017 08-1042 NPNM 2024 08-1080 NPNM 2024 08-1111 NPM 2022 X 08-1150 NPNM 2015 08-1217 NPNM 2015 08-1239 NPNM 2016 08-271 NPNM 2024 08-279 NPNM 2024 08-284 P 2024 X X 08-347 P 2024 X X 08-55 NPNM 2024 08-937 NPNM 2024 08-952 NPNM 2015 09-107 NPM 2025 09-32 NPNM 2020 09-641 NPNM 2020 11-1018 NPM 2023 11-1097 NPM 2022 X 11-118 NPNM 2019 11-1180 NPM 2021 X 11-177 P 2025 X X 11-225 NPNM 2019 11-244 NPNM 2019 11-247 NPNM 2019 11-318 NPNM 2019 11-376 P 2025 X X 11-400 NPM 2022 X 11-46 NPNM 2019 11-479 NPNM 2016 11-512 P 2025 X X 11-515 NPNM 2019 11-64 NPNM 2019 11-69 NPNM 2019 11-71 NPNM 2019 11-75 NPNM 2019 11-79 NPNM 2019 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 11-801 NPNM 2019 11-803 NPNM 2019 11-805 NPNM 2019 12-1245 NPNM 2013 12-1261 NPNM 2013 12-1313 NPNM 2018 12-1414 NPNM 2013 12-1604 NPNM 2013 12-1676 NPNM 2013 12-1676a NPNM 2013 12-1682 NPNM 2013 12-1692 NPNM 2014 12-1700 NPNM 2013 12-1711 NPNM 2013 12-1781 NPNM 2015 12-1793 NPNM 2015 12-1795 NPNM 2015 12-1916 NPNM 2013 12-2026 NPNM 2015 12-2034 NPNM 2015 12-2042 NPM 2025 12-2075 NPNM 2013 12-2079 NPNM 2013 12-2089 NPNM 2013 12-2092a NPNM 2013 12-2093 NPNM 2013 12-2126 NPNM 2021 12-2128 NPNM 2021 12-2133 NPM 2021 X 12-2273 NPNM 2020 12-2297 NPNM 2016 12-2299 NPNM 2016 12-2484 NPM 2022 X 12-2508 NPNM 2024 12-2538 NPM 2021 X 12-2551 NPM 2021 X 12-2581 NPM 2021 X 12-569 P 2025 X X 12-576 P 2025 X X 12-889 NPNM 2015 12-890 NPNM 2020 12-925 NPM 2025 12-972 NPNM 2015 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 12-997 NPNM 2015 13-1098 P 2025 X X 13-1106 NPNM 2020 13-1109 NPNM 2018 13-1174 NPM 2025 13-1219 NPNM 2012 X 13-1283 NPM 2025 13-1552 NPM 2025 13-1588 P 2025 X X 13-1673 NPNM 2021 13-1715 NPNM 2024 13-1716 NPNM 2024 13-1718 NPNM 2017 13-1758 NPNM 2020 13-1766 NPNM 2024 13-1769 NPM 2021 X 13-1870 NPNM 2020 13-1957 NPNM 2013 13-2031 NPNM 2020 13-2135 NPNM 2021 13-2156 NPNM 2013 13-2332 NPM 2024 13-2371 NPM 2021 X 13-2382 NPNM 2021 13-2387 NPNM 2021 13-2390 NPNM 2021 13-2455 NPNM 2024 13-2464 NPNM 2020 13-2527 NPNM 2024 13-2557 NPNM 2024 13-2563 NPM 2025 13-2564 NPNM 2020 13-2596 NPNM 2020 13-2611 NPNM 2024 13-2613 NPM 2024 13-2666 NPNM 2021 13-2736 NPM 2025 13-2768 NPNM 2012 X 13-2822 NPNM 2021 13-2860 NPNM 2024 13-2867 NPNM 2024 13-2872 NPNM 2024 13-2872b NPM 2024 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 13-2886 NPNM 2012 X 13-3021 NPNM 2021 13-3024 NPNM 2021 13-3043 NPNM 2021 13-3095 NPNM 2012 X 13-3099 NPNM 2014 13-3119 NPNM 2021 13-3127 NPNM 2021 13-3130 NPNM 2021 13-3162 NPNM 2020 13-3194 NPNM 2020 13-3204 NPNM 2024 13-3204b NPM 2024 13-3224 NPNM 2018 13-3243 NPNM 2012 X 13-3427 NPNM 2023 13-3488 NPNM 2024 13-3497 NPNM 2024 13-3509 NPNM 2024 13-3636 NPNM 2021 13-3686 NPNM 2012 X 13-3706 NPNM 2021 13-3774 NPNM 2024 13-3806 NPNM 2021 13-3820 NPM 2021 X 13-3861 NPNM 2021 13-3869 NPNM 2021 13-3905 NPM 2021 X 13-3921 NPNM 2022 13-4012 NPM 2024 13-4025 NPNM 2023 13-4037 NPNM 2021 13-4046 NPNM 2021 13-4057 NPNM 2023 13-4075 NPNM 2023 13-4082 NPNM 2023 13-4084 NPNM 2023 13-4107 NPNM 2021 13-4147 NPNM 2022 13-471 P 2025 X X 13-68 NPM 2025 13-906 NPM 2021 X 14-1007 NPM 2023 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 14-1075 NPNM 2014 14-1130 NPNM 2013 14-1133 NPNM 2013 14-1136 NPNM 2013 14-1138 NPNM 2013 14-1139 NPNM 2013 14-1218 NPNM 2023 14-1220 NPNM 2023 14-1222 NPNM 2023 14-1229 NPNM 2023 14-124 NPNM 2013 14-1253 NPNM 2013 14-1253b NPNM 2013 14-1387 NPNM 2013 14-1514 NPM 2024 14-1515 NPNM 2013 14-1650 NPM 2022 X 14-1772 NPNM 2023 14-1779 NPNM 2023 14-1959 NPM 2023 14-2004 NPM 2022 X 14-2024 NPM 2022 X 14-2032 NPM 2024 14-2099 NPNM 2022 14-331 NPM 2022 X 14-368 NPNM 2010 X 14-400 NPM 2022 X 14-595 NPM 2023 14-615 NPNM 2013 14-635 NPM 2023 14-644 NPM 2023 14-645 NPM 2023 14-670 NPM 2023 14-759 NPNM 2013 14-766 NPM 2023 14-996 P 2025 X X 14-999 NPM 2024 15-027 NPNM 2011 X 15-1018 NPNM 2011 X 15-1020 NPNM 2019 15-1032 NPM 2024 15-1067 NPM 2024 15-1093 NPNM 2024 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 15-1106 NPNM 2011 X 15-1108 NPNM 2018 15-1110 NPNM 2011 X 15-1125 NPNM 2011 X 15-1127 NPNM 2011 X 15-1129 NPNM 2011 X 15-1132 NPNM 2011 X 15-1135 NPNM 2019 15-1137 NPNM 2019 15-1185 NPNM 2011 X 15-1187 NPNM 2011 X 15-1188 NPNM 2011 X 15-1217 NPM 2021 X 15-1219 NPM 2024 15-1225 NPNM 2019 15-1237 NPNM 2016 15-1239 NPNM 2011 X 15-1248 NPM 2024 15-1263 NPM 2024 15-1277 NPM 2022 X 15-1277W NPM 2021 X 15-1287 NPNM 2011 X 15-1348 NPNM 2023 15-146 NPNM 2021 15-1494 NPNM 2019 15-1746 NPNM 2013 15-1749 NPNM 2013 15-1806 NPM 2022 X 15-1807 NPNM 2013 15-1817 NPM 2022 X 15-1856 NPNM 2013 15-1983 NPNM 2019 15-2108 NPNM 2019 15-2242 NPNM 2020 15-2243 NPM 2025 15-2292 NPM 2021 X 15-2295 NPNM 2023 15-2297 NPNM 2023 15-2375 NPNM 2020 15-2388 NPNM 2020 15-2394 NPNM 2011 X 15-2409 NPNM 2021 15-2412 NPNM 2021 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 15-2475 NPNM 2021 15-2477 NPM 2024 15-2488 NPNM 2023 15-2514 NPNM 2019 15-2527 NPNM 2011 X 15-2528 NPNM 2011 X 15-2630 NPNM 2019 15-2650 NPNM 2017 15-2656 NPNM 2019 15-2690 NPNM 2020 15-2792 NPM 2024 15-3111 NPNM 2023 15-311a NPNM 2023 15-3200 NPNM 2024 15-3211 NPNM 2024 15-3212 NPM 2024 15-3219 NPNM 2024 15-3274 NPNM 2021 15-3329 NPNM 2022 15-3337 NPNM 2022 15-3339 P 2025 X X 15-3372 NPNM 2022 15-3373 P 2025 X X 15-3468 NPNM 2022 15-349 NPNM 2019 15-350 NPNM 2019 15-378 NPNM 2019 15-399 NPNM 2011 X 15-488 NPNM 2011 X 15-571 NPNM 2021 15-573 NPNM 2021 15-690 NPNM 2019 15-693 NPNM 2019 15-744 NPM 2022 X 15-787 NPM 2022 X 15-798 NPNM 2011 X 15-804 NPNM 2019 15-840 NPNM 2011 X 15-858 NPNM 2011 X 15-863 NPNM 2011 X 15-865 NPNM 2011 X 15-895 NPNM 2011 X 15-905 NPNM 2011 X City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 15-910 NPM 2022 X 15-940 NPM 2022 X 15-959 NPM 2022 X 15-965 NPNM 2011 X 16-1073 NPNM 2022 16-1178 P 2025 X X 16-119 NPNM 2016 16-1204 NPNM 2024 16-1205 P 2025 X X 16-1207 NPNM 2024 16-1213 NPNM 2024 16-1386 NPNM 2016 16-142 NPNM 2020 16-1499 NPNM 2020 16-1506 NPNM 2016 16-1508 NPM 2025 16-1571 NPNM 2016 16-1576 NPNM 2016 16-1578 NPNM 2016 16-1579 NPNM 2016 16-1580 NPNM 2016 16-1581 NPNM 2016 16-1582 NPNM 2016 16-1583 NPNM 2016 16-1586 NPNM 2016 16-1587 NPNM 2016 16-1610 NPM 2024 16-1628 P 2025 X X 16-1633 NPNM 2024 16-164 NPNM 2018 16-1918 NPNM 2012 X 16-1952 NPNM 2016 16-201 NPNM 2024 16-2092 NPM 2023 16-2099 NPNM 2012 X 16-2187 NPNM 2017 16-2203 NPNM 2022 16-2204 NPNM 2022 16-28 NPNM 2017 16-295 NPNM 2020 16-386 NPNM 2016 16-396 NPNM 2011 X 16-436 NPNM 2019 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 16-463 NPNM 2016 16-551 NPNM 2016 16-587 NPNM 2018 16-594 P 2025 X X 16-622 NPNM 2017 16-629 NPNM 2017 16-660 NPNM 2024 16-663 NPNM 2017 16-844 P 2025 X X 16-869 NPNM 2017 16-871 NPNM 2016 16-873 NPNM 2016 16-941 P 2025 X X 16-995 P 2025 X X EdgePond1out NPNM 2013 EdgePond2in NPNM 2013 FernauPond NPM 2025 OakwoodPondOut NPM 2024 Osh0944 NPNM 2011 X U-110284 NPNM 0 X U-110530 NPNM 2025 X U-110619 NPNM 2025 U-110619w NPNM 2025 U-111659 NPNM 2025 U-112427 NPNM 2025 U-112428 NPNM 2025 U-43341 NPNM 0 X U-43347 NPNM 2025 U-43361 NPNM 2025 U-43385 NPNM 0 X U-43406 NPNM 2025 U-43443 NPNM 2025 U-43456 NPNM 2025 U-43478 NPNM 0 X U-43482 NPNM 0 X U-43484 NPNM 2025 U-43488 NPNM 0 X U-43519 NPNM 0 X U-43527 NPNM 0 X U-43532 NPNM 0 X U-43536 NPNM 0 X U-43543 NPNM 2025 U-43554 NPNM 0 X City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 U-43555 NPNM 0 X U-43571 NPNM 0 X U-43598 NPNM 0 X U-43603 NPNM 2025 U-43611 NPNM 0 X U-43613 NPNM 0 X U-43616 NPNM 2025 U-43644 NPNM 0 X U-43660 NPNM 2025 U-43661 NPNM 2025 U-43679 NPNM 0 X U-43690 NPNM 0 X U-43698 NPNM 2025 U-43703 NPNM 2025 U-43705 NPNM 0 X U-43708 NPNM 2025 U-43709 NPNM 0 X U-43713 NPNM 2025 U-43764 NPNM 0 X U-43774 NPNM 0 X U-43784 NPNM 0 U-43785 NPNM 0 X U-43786 NPNM 0 X U-43790 NPNM 0 X U-43800 NPNM 2025 U-43808 NPNM 2025 U-43814 NPNM 0 X U-43822 NPNM 2025 U-43837 NPNM 2025 U-43841 NPNM 0 X U-43845 NPNM 2025 U-43856 NPNM 0 X U-43858 NPNM 2025 U-43882 NPNM 0 X U-43887 NPNM 2025 U-43915 NPNM 0 X U-43942 NPNM 2025 U-43947 NPNM 0 X U-43958 NPNM 0 X U-43975 NPNM 2025 U-43982 NPNM 2025 U-43995 NPNM 0 X U-44005 NPNM 2025 City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Outfall ID Outfall ID Class Last Screened 2026 2027 U-44011 NPNM 2025 U-44022 NPNM 0 X U-44023 NPNM 0 X U-44026 NPNM 2025 U-44053 NPNM 2025 U-44060 NPNM 0 X U-44062 NPNM 2025 U-44079 NPNM 0 X U-44083 NPNM 0 X U-44085 NPNM 2025 U-44091 NPNM 0 X U-44101 NPNM 2025 U-44109 NPNM 2025 U-44117 NPNM 2025 U-44119 NPNM 2025 U-44131 NPNM 2025 U-44142 NPNM 2025 U-44156 NPNM 2025 U-44164 NPNM 0 X U-44172 NPNM 0 X U-44174 NPNM 0 X U-44189 NPNM 2025 U-44215 NPNM 0 X U-44238 NPNM 2025 U-44243 NPNM 0 X U-44258 NPNM 0 X U-44260 NPNM 0 X U-48076 NPNM 0 X U-48077 NPNM 0 X U-48090 NPNM 0 X Wash41_01 NPM 2022 X Wash41_02 NPNM 2015 Wash41_03 NPM 2021 X Totals 101 90 P Priority Outfall NPM Non-Priority Major Outfall NPNM Non-Priority Non-Major Outfall City of Oshkosh Ongoing Screening Program Outfall Screening Schedule, by Year Outfall ID Class Last Screened 2026 2027 01-520 P 2025 X X 02-357 P 2025 X X 03-119 P 2025 X X 03-173 P 2025 X X 03-22 P 2025 X X 03-35 P 2025 X X 03-477 P 2025 X X 03-604 P 2025 X X 03-81 P 2025 X X 05-14 P 2025 X X 06-3027 P 2025 X X 06-52 P 2025 X X 06-810 P 2025 X X 06-829 P 2025 X X 08-284 P 2024 X X 08-347 P 2024 X X 11-177 P 2025 X X 11-376 P 2025 X X 11-512 P 2025 X X 12-569 P 2025 X X 12-576 P 2025 X X 13-1098 P 2025 X X 13-1588 P 2025 X X 13-471 P 2025 X X 14-996 P 2025 X X 15-3339 P 2025 X X 15-3373 P 2025 X X 16-1178 P 2025 X X 16-1205 P 2025 X X 16-1628 P 2025 X X 16-594 P 2025 X X 16-844 P 2025 X X 16-941 P 2025 X X 16-995 P 2025 X X 05-670 NPM 2025 06-2296 NPM 2025 09-107 NPM 2025 12-2042 NPM 2025 12-925 NPM 2025 13-1174 NPM 2025 Priority Outfalls (annual) Non-Priority Major Outfalls (every 5 years) 13-1283 NPM 2025 13-1552 NPM 2025 13-2563 NPM 2025 13-2736 NPM 2025 13-68 NPM 2025 15-2243 NPM 2025 16-1508 NPM 2025 FernauPond NPM 2025 05-621 NPM 2021 X 06-2739 NPM 2021 X 11-1180 NPM 2021 X 12-2133 NPM 2021 X 12-2538 NPM 2021 X 12-2551 NPM 2021 X 12-2581 NPM 2021 X 13-1769 NPM 2021 X 13-2371 NPM 2021 X 13-3820 NPM 2021 X 13-3905 NPM 2021 X 13-906 NPM 2021 X 15-1217 NPM 2021 X 15-1277W NPM 2021 X 15-2292 NPM 2021 X Wash41_03 NPM 2021 X 08-1111 NPM 2022 X 11-1097 NPM 2022 X 11-400 NPM 2022 X 12-2484 NPM 2022 X 14-1650 NPM 2022 X 14-2004 NPM 2022 X 14-2024 NPM 2022 X 14-331 NPM 2022 X 14-400 NPM 2022 X 15-1277 NPM 2022 X 15-1806 NPM 2022 X 15-1817 NPM 2022 X 15-744 NPM 2022 X 15-787 NPM 2022 X 15-910 NPM 2022 X 15-940 NPM 2022 X 15-959 NPM 2022 X Wash41_01 NPM 2022 X 01-642 NPM 2023 06-1136 NPM 2023 06-1696 NPM 2023 06-2241 NPM 2023 06-489 NPM 2023 11-1018 NPM 2023 14-1007 NPM 2023 14-1959 NPM 2023 14-595 NPM 2023 14-635 NPM 2023 14-644 NPM 2023 14-645 NPM 2023 14-670 NPM 2023 14-766 NPM 2023 16-2092 NPM 2023 01-360 NPM 2024 05-155 NPM 2024 06-1746 NPM 2024 13-2332 NPM 2024 13-2613 NPM 2024 13-2872b NPM 2024 13-3204b NPM 2024 13-4012 NPM 2024 14-1514 NPM 2024 14-2032 NPM 2024 14-999 NPM 2024 15-1032 NPM 2024 15-1067 NPM 2024 15-1219 NPM 2024 15-1248 NPM 2024 15-1263 NPM 2024 15-2477 NPM 2024 15-2792 NPM 2024 15-3212 NPM 2024 16-1610 NPM 2024 OakwoodPondOut NPM 2024 01-35 NPNM 2018 01-380 NPNM 2015 01-656 NPNM 2016 01-696 NPNM 2024 01-713 NPNM 2022 01-722 NPNM 2018 02-309 NPNM 2024 02-322 NPNM 2015 02-386 NPNM 2015 02-419 NPNM 2015 03-382 NPNM 2018 03-385 NPNM 2018 03-387 NPNM 2018 05-241 NPNM 2024 06-1028 NPNM 2017 Non-Priority Non-Major Outfalls (every 10 years) 06-1083 NPNM 2017 06-1090 NPNM 2017 06-1149 NPNM 2017 06-1392 NPNM 2022 06-1394 NPNM 2022 06-1404 NPNM 2022 06-1477 NPNM 2022 06-1495 NPNM 2024 06-1562 NPNM 2023 06-1601 NPNM 2022 06-1619 NPNM 2022 06-1633 NPNM 2022 06-1636 NPNM 2022 06-1694 NPNM 2014 06-1709 NPNM 2024 06-1814 NPNM 2017 06-1816 NPNM 2017 06-216 NPNM 2019 06-221 NPNM 2024 06-2632 NPNM 2022 06-2756 NPNM 2022 06-2798 NPNM 2023 06-2804 NPNM 2022 06-2927 NPNM 2022 06-2933 NPNM 2022 06-2947 NPNM 2025 06-2955 NPNM 2022 06-2957 NPNM 2022 06-2960 NPNM 2022 06-2961 NPNM 2022 06-3 NPNM 2017 06-471 NPNM 2023 06-473 NPNM 2023 06-478 NPNM 2023 06-494 NPNM 2019 06-588 NPNM 2018 06-602 NPNM 2023 06-610 NPNM 2023 06-622a NPNM 2017 06-65 NPNM 2022 06-745 NPNM 2023 06-795 NPNM 2023 06-798 NPNM 2023 06-880 NPNM 2017 06-961 NPNM 2017 06-968 NPNM 2017 06-977 NPNM 2017 08-1042 NPNM 2024 08-1080 NPNM 2024 08-1150 NPNM 2015 08-1217 NPNM 2015 08-1239 NPNM 2016 08-271 NPNM 2024 08-279 NPNM 2024 08-55 NPNM 2024 08-937 NPNM 2024 08-952 NPNM 2015 09-32 NPNM 2020 09-641 NPNM 2020 11-118 NPNM 2019 11-225 NPNM 2019 11-244 NPNM 2019 11-247 NPNM 2019 11-318 NPNM 2019 11-46 NPNM 2019 11-479 NPNM 2016 11-515 NPNM 2019 11-64 NPNM 2019 11-69 NPNM 2019 11-71 NPNM 2019 11-75 NPNM 2019 11-79 NPNM 2019 11-801 NPNM 2019 11-803 NPNM 2019 11-805 NPNM 2019 12-1245 NPNM 2013 12-1261 NPNM 2013 12-1313 NPNM 2018 12-1414 NPNM 2013 12-1604 NPNM 2013 12-1676 NPNM 2013 12-1676a NPNM 2013 12-1682 NPNM 2013 12-1692 NPNM 2014 12-1700 NPNM 2013 12-1711 NPNM 2013 12-1781 NPNM 2015 12-1793 NPNM 2015 12-1795 NPNM 2015 12-1916 NPNM 2013 12-2026 NPNM 2015 12-2034 NPNM 2015 12-2075 NPNM 2013 12-2079 NPNM 2013 12-2089 NPNM 2013 12-2092a NPNM 2013 12-2093 NPNM 2013 12-2126 NPNM 2021 12-2128 NPNM 2021 12-2273 NPNM 2020 12-2297 NPNM 2016 12-2299 NPNM 2016 12-2508 NPNM 2024 12-889 NPNM 2015 12-890 NPNM 2020 12-972 NPNM 2015 12-997 NPNM 2015 13-1106 NPNM 2020 13-1109 NPNM 2018 13-1673 NPNM 2021 13-1715 NPNM 2024 13-1716 NPNM 2024 13-1718 NPNM 2017 13-1758 NPNM 2020 13-1766 NPNM 2024 13-1870 NPNM 2020 13-1957 NPNM 2013 13-2031 NPNM 2020 13-2135 NPNM 2021 13-2156 NPNM 2013 13-2382 NPNM 2021 13-2387 NPNM 2021 13-2390 NPNM 2021 13-2455 NPNM 2024 13-2464 NPNM 2020 13-2527 NPNM 2024 13-2557 NPNM 2024 13-2564 NPNM 2020 13-2596 NPNM 2020 13-2611 NPNM 2024 13-2666 NPNM 2021 13-2822 NPNM 2021 13-2860 NPNM 2024 13-2867 NPNM 2024 13-2872 NPNM 2024 13-3021 NPNM 2021 13-3024 NPNM 2021 13-3043 NPNM 2021 13-3099 NPNM 2014 13-3119 NPNM 2021 13-3127 NPNM 2021 13-3130 NPNM 2021 13-3162 NPNM 2020 13-3194 NPNM 2020 13-3204 NPNM 2024 13-3224 NPNM 2018 13-3427 NPNM 2023 13-3488 NPNM 2024 13-3497 NPNM 2024 13-3509 NPNM 2024 13-3636 NPNM 2021 13-3706 NPNM 2021 13-3774 NPNM 2024 13-3806 NPNM 2021 13-3861 NPNM 2021 13-3869 NPNM 2021 13-3921 NPNM 2022 13-4025 NPNM 2023 13-4037 NPNM 2021 13-4046 NPNM 2021 13-4057 NPNM 2023 13-4075 NPNM 2023 13-4082 NPNM 2023 13-4084 NPNM 2023 13-4107 NPNM 2021 13-4147 NPNM 2022 14-1075 NPNM 2014 14-1130 NPNM 2013 14-1133 NPNM 2013 14-1136 NPNM 2013 14-1138 NPNM 2013 14-1139 NPNM 2013 14-1218 NPNM 2023 14-1220 NPNM 2023 14-1222 NPNM 2023 14-1229 NPNM 2023 14-124 NPNM 2013 14-1253 NPNM 2013 14-1253b NPNM 2013 14-1387 NPNM 2013 14-1515 NPNM 2013 14-1772 NPNM 2023 14-1779 NPNM 2023 14-2099 NPNM 2022 14-615 NPNM 2013 14-759 NPNM 2013 15-1020 NPNM 2019 15-1093 NPNM 2024 15-1108 NPNM 2018 15-1135 NPNM 2019 15-1137 NPNM 2019 15-1225 NPNM 2019 15-1237 NPNM 2016 15-1348 NPNM 2023 15-146 NPNM 2021 15-1494 NPNM 2019 15-1746 NPNM 2013 15-1749 NPNM 2013 15-1807 NPNM 2013 15-1856 NPNM 2013 15-1983 NPNM 2019 15-2108 NPNM 2019 15-2242 NPNM 2020 15-2295 NPNM 2023 15-2297 NPNM 2023 15-2375 NPNM 2020 15-2388 NPNM 2020 15-2409 NPNM 2021 15-2412 NPNM 2021 15-2475 NPNM 2021 15-2488 NPNM 2023 15-2514 NPNM 2019 15-2630 NPNM 2019 15-2650 NPNM 2017 15-2656 NPNM 2019 15-2690 NPNM 2020 15-3111 NPNM 2023 15-311a NPNM 2023 15-3200 NPNM 2024 15-3211 NPNM 2024 15-3219 NPNM 2024 15-3274 NPNM 2021 15-3329 NPNM 2022 15-3337 NPNM 2022 15-3372 NPNM 2022 15-3468 NPNM 2022 15-349 NPNM 2019 15-350 NPNM 2019 15-378 NPNM 2019 15-571 NPNM 2021 15-573 NPNM 2021 15-690 NPNM 2019 15-693 NPNM 2019 15-804 NPNM 2019 16-1073 NPNM 2022 16-119 NPNM 2016 16-1204 NPNM 2024 16-1207 NPNM 2024 16-1213 NPNM 2024 16-1386 NPNM 2016 16-142 NPNM 2020 16-1499 NPNM 2020 16-1506 NPNM 2016 16-1571 NPNM 2016 16-1576 NPNM 2016 16-1578 NPNM 2016 16-1579 NPNM 2016 16-1580 NPNM 2016 16-1581 NPNM 2016 16-1582 NPNM 2016 16-1583 NPNM 2016 16-1586 NPNM 2016 16-1587 NPNM 2016 16-1633 NPNM 2024 16-164 NPNM 2018 16-1952 NPNM 2016 16-201 NPNM 2024 16-2187 NPNM 2017 16-2203 NPNM 2022 16-2204 NPNM 2022 16-28 NPNM 2017 16-295 NPNM 2020 16-386 NPNM 2016 16-436 NPNM 2019 16-463 NPNM 2016 16-551 NPNM 2016 16-587 NPNM 2018 16-622 NPNM 2017 16-629 NPNM 2017 16-660 NPNM 2024 16-663 NPNM 2017 16-869 NPNM 2017 16-871 NPNM 2016 16-873 NPNM 2016 EdgePond1out NPNM 2013 EdgePond2in NPNM 2013 Wash41_02 NPNM 2015 06-1475 NPNM 06-1476 NPNM 06-1485 NPNM 06-2893 NPNM U-110619 NPNM 2025 U-110619w NPNM 2025 U-111659 NPNM 2025 U-112427 NPNM 2025 U-112428 NPNM 2025 U-43347 NPNM 2025 U-43361 NPNM 2025 U-43406 NPNM 2025 U-43443 NPNM 2025 U-43456 NPNM 2025 U-43484 NPNM 2025 U-43543 NPNM 2025 U-43603 NPNM 2025 U-43616 NPNM 2025 U-43660 NPNM 2025 U-43661 NPNM 2025 U-43698 NPNM 2025 U-43703 NPNM 2025 U-43708 NPNM 2025 U-43713 NPNM 2025 U-43784 NPNM U-43800 NPNM 2025 U-43808 NPNM 2025 U-43822 NPNM 2025 U-43837 NPNM 2025 U-43845 NPNM 2025 U-43858 NPNM 2025 U-43887 NPNM 2025 U-43942 NPNM 2025 U-43975 NPNM 2025 U-43982 NPNM 2025 U-44005 NPNM 2025 U-44011 NPNM 2025 U-44026 NPNM 2025 U-44053 NPNM 2025 U-44062 NPNM 2025 U-44085 NPNM 2025 U-44101 NPNM 2025 U-44109 NPNM 2025 U-44117 NPNM 2025 U-44119 NPNM 2025 U-44131 NPNM 2025 U-44142 NPNM 2025 U-44156 NPNM 2025 U-44189 NPNM 2025 U-44238 NPNM 2025 U-110284 NPNM X U-110530 NPNM 2025 X U-43341 NPNM X U-43385 NPNM X U-43478 NPNM X U-43482 NPNM X U-43488 NPNM X U-43519 NPNM X U-43527 NPNM X U-43532 NPNM X U-43536 NPNM X U-43554 NPNM X U-43555 NPNM X U-43571 NPNM X U-43598 NPNM X U-43611 NPNM X U-43613 NPNM X U-43644 NPNM X U-43679 NPNM X U-43690 NPNM X U-43705 NPNM X U-43709 NPNM X U-43764 NPNM X U-43774 NPNM X U-43785 NPNM X U-43786 NPNM X U-43790 NPNM X U-43814 NPNM X U-43841 NPNM X U-43856 NPNM X U-43882 NPNM X U-43915 NPNM X U-43947 NPNM X U-43958 NPNM X U-43995 NPNM X U-44022 NPNM X U-44023 NPNM X U-44060 NPNM X U-44079 NPNM X U-44083 NPNM X U-44091 NPNM X U-44164 NPNM X U-44172 NPNM X U-44174 NPNM X U-44215 NPNM X U-44243 NPNM X U-44258 NPNM X U-44260 NPNM X U-48076 NPNM X U-48077 NPNM X U-48090 NPNM X 01-132 NPNM 2012 X 13-1219 NPNM 2012 X 13-2768 NPNM 2012 X 13-2886 NPNM 2012 X 13-3095 NPNM 2012 X 13-3243 NPNM 2012 X 13-3686 NPNM 2012 X 14-368 NPNM 2010 X 15-027 NPNM 2011 X 15-1018 NPNM 2011 X 15-1106 NPNM 2011 X 15-1110 NPNM 2011 X 15-1125 NPNM 2011 X 15-1127 NPNM 2011 X 15-1129 NPNM 2011 X 15-1132 NPNM 2011 X 15-1185 NPNM 2011 X 15-1187 NPNM 2011 X 15-1188 NPNM 2011 X 15-1239 NPNM 2011 X 15-1287 NPNM 2011 X 15-2394 NPNM 2011 X 15-2527 NPNM 2011 X 15-2528 NPNM 2011 X 15-399 NPNM 2011 X 15-488 NPNM 2011 X 15-798 NPNM 2011 X 15-840 NPNM 2011 X 15-858 NPNM 2011 X 15-863 NPNM 2011 X 15-865 NPNM 2011 X 15-895 NPNM 2011 X 15-905 NPNM 2011 X 15-965 NPNM 2011 X 16-1918 NPNM 2012 X 16-2099 NPNM 2012 X 16-396 NPNM 2011 X Osh0944 NPNM 2011 X Totals 101 90 P Priority Outfall NPM Non-Priority Major Outfall NPNM Non-Priority Non-Major Outfall Appendix B IDDE Tracking Maps and Correspondence ! ! ! ! ! ! ! ! ! ! ! ! 01-520 US1 12-576 US1 03-22 US1 11-376 US1 03-81 US103-35 US1 03-173 US1 16-1178 US1 11-512 US1 05-14 US1 Gross Solids (manholes) !Moderate (5) !Severe (5) F:\ENVIRO\IDDE\GIS\Floatables_Oshkosh.mxd PROJECT NO.R3000958.03 FIGURE NO.B-1 SCALE:1 " = 3,333 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING PROGRAM CITY OF OSHKOSHWINNEBAGO COUNTY, WISCONSIN MANHOLES WITH FLOATABLEGROSS SOLIDS.Date:12/17/2024 Printed: JCWeis 11/26/2025 3:10:56 PM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! !! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! # # ## ! ! ! ! ! OREGON ST N MAIN ST NEBRASKA ST S MAIN ST E 007TH(SEVENTH)AVE E 009TH(NINTH)AVE E 010TH(TENTH)AVE E 008TH(EIGHTH)AVE PIONEERDR ALLEY W005TH(FIFTH)AVE W 010TH (TENTH)AVE W 006TH(SIXTH)AVE W 008TH (EIGHTH)AVE W 011TH(ELEVENTH)AVE W 009TH(NINTH)AVE 03-35 03-22 08-279 03-60403-604 03-22 03-35 03-379 03-81 03-81 08-279 09-107 09-32 09-641 F:\ENVIRO\IDDE\GIS\_Oshkosh\AreaMap_03-22.mxd PROJECT NO.R3000958.03 FIGURE NO.B-2 SCALE:1 " = 255 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING CITY OF OSHKOSH, WINNEBAGO COUNTY, WISCONSIN AREA MAP - OUTFALL 03-22(8/5/2025).Date:11/26/2025 Printed: JCWeis 12/8/2025 9:51:50 AM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com Outfall fully submerged(not located) Manhole 03-22 US1Floating gross solids (litter)pH: 9.03 ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! !! ! ! ! ! ! !! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! # ## ! ! Outfall fully submerged(not located) Manhole 03-173 US1Floating gross solids (litter)pH: 9.14 ALLEY W 016TH (SIXTEENTH)AVE W 015TH(FIFTEENTH)AVE E 015TH (FIFTEENTH)AVE W 017TH (SEVENTEENTH)AVE S MAIN ST NEBRASKA ST DOTY ST OREGON ST 14-400 03-173 03-604 03-173 03-477 14-400 14-368 F:\ENVIRO\IDDE\GIS\_Oshkosh\AreaMap_03-173.mxd PROJECT NO.R3000958.03 FIGURE NO.B-3 SCALE:1 " = 208 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING CITY OF OSHKOSH, WINNEBAGO COUNTY, WISCONSIN AREA MAP - OUTFALL 03-173(8/5/2025).Date:11/26/2025 Printed: JCWeis 12/8/2025 9:50:22 AM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com ") ") ") ") ") ")") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! # # # # # !! !!! ! ! ## ## #### ## !!!! !!!!!! !! !! W SMITH AVE COMET ST GENEVA ST BACON AVE JACKSON ST N MAIN ST 15-3339 15-3337 15-3329 15-3372 15-3373 U-43808 U-44189 15-1817 15-940 15-744 15-3337 15-3373 15-3372 15-3329 F:\ENVIRO\IDDE\GIS\_Oshkosh\AreaMap_15-3373.mxd PROJECT NO.R3000958.03 FIGURE NO.B-4 SCALE:1 " = 200 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING CITY OF OSHKOSH, WINNEBAGO COUNTY, WISCONSIN AREA MAP - OUTFALL 15-3373(9/17/2025).Date:11/26/2025 Printed: JCWeis 12/8/2025 9:55:45 AM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com Outfall 15-3373Partially submerged(pooled water in basin) Curb Inlet dryCurb Inlet (15-3373 US1)Ammonia: 1 ppmDetergent: 0.85 mg/L Outfall pool hydraulicallydisconnected fromadjacent outfalls 1 Jason Weis From:Gierach, Justin <JGierach@oshkoshwi.gov> Sent:Wednesday, October 1, 2025 9:52 AM To:Jason Weis; Deckert, Alyssa Cc:Brian Wayner; Canady, Casey; Meyer, Brittney; Hintz, Andrew Subject:RE: Potential illicit discharge - 15-3373 (Comet St) CAUTION: External Sender. Please do not click on links or open attachments from senders you do not trust. Jason- We did have Street televise this system. They indicated that they found nothing suspicious. However, there is a lateral connection (I believe for 2328 Comet Street) that may look suspicious (see below). Casey/Bri ney, can you please review the televising and work with Jason/Brian to conﬁrm the location and reach out to the property owner for some dye testing. We may need to involve streets again to help with the dye testing. 2 Respectfully, Justin Gierach, P.E. Engineering Division Manager/City Engineer, Department of Public Works City of Oshkosh 920.236.5065 Follow us: Web | Facebook | X From: Jason Weis <Jason.Weis@westwoodps.com> Sent: Wednesday, October 1, 2025 9:21 AM To: Deckert, Alyssa <ADeckert@oshkoshwi.gov>; Gierach, Justin <JGierach@oshkoshwi.gov> Cc: Brian Wayner <Brian.Wayner@westwoodps.com> Subject: RE: Potential illicit discharge - 15-3373 (Comet St) EXTERNAL SENDER. Only open links and attachments from known senders. DO NOT provide your username or password to anyone. I completed the 2025 outfall screening last week. With the exception of the ﬂoating debris in upstream manholes, there were no signiﬁcant illicit discharges other than the 15-3373 (Comet St) detergent/ammonia discharge. I rescreened the Comet Street outfall and curb inlets on 9/25/2025. The condition was similar to the 9/17 screening – the detention basin water was backed up into the ﬁrst curb inlet, and the next curb inlet was dry. A sample from the pool in the ﬁrst curb inlet once again had detections of detergent (0.6 mg/L) and ammonia (3 ppm). I also collected a sample from the pool at outfall 15-3372 (Geneva Street, one block west), which had no detections. The pools at the ends of the outfalls did not seem to connect with each other in the pond; therefore, the detergent and ammonia in the Comet Street outfall pool is likely coming from Comet Street and not being transported from a diAerent part of the pond. Because of the pooled condition, isolating the source of the discharge becomes diAicult. The discharge could originate from the upper end of the drainage basin (south end of Comet Street) and ultimately collect in the pool in the ﬁrst curb inlet. I believe the City was going to televise this segment of storm sewer – perhaps this will reveal a cross connection or other source to investigate. If the detergent is coming from residential car washing, it would not be considered an illicit discharge. However, the elevated ammonia levels are typically not consistent with car washing, and more indicative of sanitary discharges. When screening the curb inlets, I noticed that the house at the second curb inlet (2348 Comet St) had a hose stretched across the front lawn to the sidewalk, which appeared to come from a sump pump discharge on the north side of the house. Google Maps / Streetview seems to show this hose being present for several years, often accompanied by a pool of water on the sidewalk or curb. If there is a basement sink, washing machine, toilet, or other sanitary connection piped into the sump pump, this could be a source of the detergent/ammonia. (Note that there is a pit bull at this house, as indicated by the sign on the door, and the chained dog that was in the backyard during the screening.) 3 If you need further assistance with tracking this discharge, please let us know. I will be on medical leave for the next few weeks starting 10/2, but Brian or someone else from our oAice would be happy to assist with sampling, testing or tracking. Jason Weis, P.E., GISP Aviation GIS Manager jason.weis@westwoodps.com direct (920) 830-6106 main (920) 735-6900 Westwood One Systems Drive Appleton, WI 54914 westwoodps.com From: Jason Weis Sent: Thursday, September 18, 2025 1:01 PM To: Deckert, Alyssa <adeckert@oshkoshwi.gov>; Gierach, Justin <jgierach@oshkoshwi.gov> Cc: Brian Wayner <Brian.Wayner@westwoodps.com> Subject: Potential illicit discharge - 15-3373 (Comet St) During yesterday’s screening, the sample for outfall 15-3373 (Comet St) had an ammonia concentration of 1 ppm and a detergent concentration of 0.85 mg/L. The outfall pipe was partially submerged in the detention basin, so the sample was collected from the shallow (3”) pool in the ﬁrst upstream curb inlet, located on the east edge of the cul-de-sac. This outfall has had detergent issues in the past (2022), so it appears to be an ongoing issue. The combination of ammonia and detergent could point to a potential sanitary sewer cross connection. Would it be possible to get this short segment of storm sewer (~300’) televised to look for potential laterals or other connections? When I resume the screening (likely next week), I’ll collect another sample from that storm sewer branch, along with samples from the other outfalls that discharge into that basin, as well as the pond in general, since the entire pond may have elevated levels and may be simply backing up into the outfall and curb inlet(s). The map from the 2022 report is attached for reference. Jason Weis, P.E., GISP Aviation GIS Manager jason.weis@westwoodps.com direct (920) 830-6106 main (920) 735-6900 Westwood One Systems Drive Appleton, WI 54914 westwoodps.com ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! !!!! !!!! !!!! SOUTHLAND AVE N WASHBURN ST SULLIVAN ST LOMBARD AVE N WESTFIELD ST SKYVIEW AVE TAFT AVE N KOELLER ST 16-844 16-191816-2099 16-2092 U-44172 16-1508 16-191816-2099 16-844 16-2092 F:\ENVIRO\IDDE\GIS\_Oshkosh\AreaMap_16-844.mxd PROJECT NO.R3000958.03 FIGURE NO.B-5 SCALE:1 " = 300 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING CITY OF OSHKOSH, WINNEBAGO COUNTY, WISCONSIN AREA MAP - OUTFALL 16-844(9/25/2025).Date:1/23/2024 Printed: JCWeis 12/8/2025 9:39:20 AM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com Trickle Flow2,890 µS/cm conductivity ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ! !!!! ! # ! Outfall 16-941Partially submergedpH: 9.20 Upstream curb inletWater in sumpNo flow entering discharge pipe N WESTHAVEN DR WESTOWNE AVE PATRIOT LA 16-941 06-622a 06-622a 16-1204 16-1207 16-1610 16-869 16-941 16-995 F:\ENVIRO\IDDE\GIS\_Oshkosh\AreaMap_16-941.mxd PROJECT NO.R3000958.03 FIGURE NO.B-6 SCALE:1 " = 187 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING CITY OF OSHKOSH, WINNEBAGO COUNTY, WISCONSIN AREA MAP - OUTFALL 16-941(9/12/2025).Date:12/8/2025 Printed: JCWeis 12/8/2025 10:24:45 AM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! !! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! # # # ! ! ! ! ! # ! PIONEER DR E 007TH(SEVENTH)AVE E 011TH (ELEVENTH)AVE E 008TH (EIGHTH)AVE E 009TH (NINTH)AVE PIONEER DRE010TH(TENTH)AVE S MAIN ST 03-81 08-55U-112427 U-112428 U-110530 F:\ENVIRO\IDDE\GIS\_Oshkosh\AreaMap_U-110530.mxd PROJECT NO.R3000958.03 FIGURE NO.B-7 SCALE:1 " = 158 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING CITY OF OSHKOSH, WINNEBAGO COUNTY, WISCONSIN AREA MAP - OUTFALL U-110530(8/5/2025).Date:11/26/2025 Printed: JCWeis 12/8/2025 10:12:46 AM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com Outfall fully submerged Manhole U-110530 US1pH: 9.08 Appendix C Outfall Inspection Reports 01-520 City of Oshkosh o20250805092908.JPG Outfall Notes: Storm sewer from Jackson St discharges to river from north. Outfall fully submerged - pipe info from MS4 map. (OSH-9424 in early reports.) Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):54 Height/Depth (in): Width (in): Not Physically Located Easting:791,740 Northing:472,395 Longitude:-88.54280 Latitude:44.01541 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43601 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 9:35:35 AM Inspector:JCW o20250805092920.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 01-520 US1. Gross solids in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 City of Oshkosh Inspection Date:9/10/2024 3:05:18 PM o20240910150144.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 01-520 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 9:52:11 AM o20230717083628.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 01-520 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/16/2022 1:40:00 PM o20220916133918.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 01-520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 10:15:00 AM o20210816101510.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 01-520 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 City of Oshkosh Inspection Date:8/19/2020 1:19:20 PM o20200819131544.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 01-520 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 11:04:00 AM o20191105110258.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 01-520 US1. Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 9:16:36 AM o20191008081446.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 01-520 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/24/2018 11:06:05 AM o20181024110412.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 01-520 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Page 3 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 City of Oshkosh Inspection Date:10/17/2017 3:18:17 PM o20171017151448.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 01-520 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/18/2016 3:38:45 PM o20161018153652.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 01-520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):33 Vegetation:None Benthic Growth:Severe Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/22/2015 2:05:49 PM o20150922130830.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located during this screening - screened at 01- 520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 8:38:02 AM o20141009073704.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 01-520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):56 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Page 4 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 City of Oshkosh Inspection Date:9/5/2013 12:59:39 PM o20130905120336.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged. Outfall screened upstream at 01-520 US1. 2012 screening follow-up. Gross solids in upstream mh. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):49 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 9:53:44 AM o20120927085734.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged; screened upstream at 01-520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:6/21/2012 10:35:10 AM o20120621092646.JPG Previous Rainfall (hrs):0-24Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. Outfall fully submerged; screened upsteam at 01-520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Inspection Date:10/11/2011 2:19:37 PM o20111011142004.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2010 screening follow-up. Outfall fully submerged. Outfall screened upstream at 01-520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 5 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 City of Oshkosh Inspection Date:8/25/2010 12:43:21 PM o20100825123724.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 01-520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6715.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 01-520 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):56 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 6 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 US1 City of Oshkosh o20250805093002.JPG Outfall Notes: Upstream manhole located approx 25 ft N of outfall 01-520. Intermediate area consists of rip-rap shoreline. (OSH-9424 US1 in early reports.) Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:791,743 Northing:472,419 Longitude:-88.54279 Latitude:44.01547 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 01-520 NR 216 Class: Inspection Date:8/5/2025 9:36:41 AM Inspector:JCW o20250805093008.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-15 Time Collected:09:30 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.06 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature (field):80 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):66 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):961 µS/cm 2025 Page 1 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 US1 City of Oshkosh Inspection Date:9/10/2024 3:06:08 PM o20240910150234.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.91 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):66 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:417 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 9:55:37 AM o20230717083818.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.79 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):65 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:442 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/16/2022 1:44:00 PM o20220916134136.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.61 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):66 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:472 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 10:19:15 AM o20210816101558.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.57 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):71 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:844 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 US1 City of Oshkosh Inspection Date:8/19/2020 1:20:07 PM o20200819131610.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.11 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. Elevated pH seemed widespread in river. units Temperature 85 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):68 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:372 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 11:05:04 AM o20191105110322.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:0 ppm ppm mg/L Detergent detection follow-up. Limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):67 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 9:18:01 AM o20191008081524.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.28 Detergents:0.9 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. Detergent detected. units Temperature 61 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):73 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:381 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/24/2018 11:07:34 AM o20181024110538.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.02 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 49 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):70 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:336 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Page 3 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 US1 City of Oshkosh Inspection Date:10/17/2017 3:21:22 PM o20171017151640.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.72 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):67 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:896 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/18/2016 3:42:40 PM o20161018153916.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.16 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):67 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:531 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/22/2015 2:08:37 PM o20150922130946.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.1 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):70 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:917 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 8:42:09 AM o20141009073910.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.84 Detergents:0 ppm ppm mg/L Floating gross solids (litter) inside manhole. units Temperature 57 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):64 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:1318 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Page 4 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 US1 City of Oshkosh Inspection Date:9/5/2013 1:02:45 PM o20130905120924.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.51 Detergents:0 ppm ppm mg/L 2012 screening follow-up. Significant gross solids in manhole - similar to previous years. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):69 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:424 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 9:57:25 AM o20120927085918.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.77 Detergents:0 ppm ppm mg/L 2011 gross solids follow-up. units Temperature 60 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):69 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0.5 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:542 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:6/21/2012 10:34:01 AM o20120621092424.JPG Previous Rainfall (hrs):0-24Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):70 Vegetation:None Benthic Growth:None Stains:Moderate Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Inspection Date:10/11/2011 2:24:37 PM o20111011142110.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.49 Detergents:-- ppm ppm mg/L 2010 screening follow-up. Floatable debris still present. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):64 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 5 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 01-520 US1 City of Oshkosh Inspection Date:5/26/2011 11:13:00 AM o20110526111400.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted to check for floatable debris. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:8/25/2010 12:53:35 PM o20100825124708.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.18 Detergents:0 ppm ppm mg/L Significant floatable debris in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):72 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6718.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Clearly visible in bottl Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.6 Detergents:0 ppm ppm mg/L Abnormal detergent analysis result (bubbles). Significant floatables in manhole. Brown color. units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):61 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 6 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 City of Oshkosh o20250805084806.JPG Outfall Notes: Storm sewer from Winnebago Ave discharges to lake from northwest. Outfall not located - pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Arch Material: CMP Diameter (in): Height/Depth (in):24 Width (in):35 Not Physically Located Easting:798,869 Northing:472,835 Longitude:-88.51570 Latitude:44.01662 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43371 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 8:53:03 AM Inspector:JCW o20250805084818.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 02-357 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 City of Oshkosh Inspection Date:8/22/2024 8:43:04 AM o20240822084104.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 8:46:50 AM o20230717072940.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/23/2022 9:09:00 AM o20220923090838.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 8:57:00 AM o20210816085746.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 City of Oshkosh Inspection Date:8/20/2020 1:04:00 PM o20200820130304.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 2:15:46 PM o20190917131538.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 10:13:07 AM o20181022101158.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 1:32:28 PM o20171017133026.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 City of Oshkosh Inspection Date:10/10/2016 10:53:43 AM o20161010105240.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/22/2015 7:14:30 AM o20150922061856.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 12:37:08 PM o20141009113806.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:9/27/2012 8:29:10 AM o20120927073330.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged; screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 City of Oshkosh Inspection Date:6/20/2012 8:05:53 AM o20120620070830.JPG Previous Rainfall (hrs):24-48Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. Outfall fully submerged; screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Inspection Date:10/3/2011 10:26:14 AM o20111003102714.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/10/2011 8:51:00 AM o20110510085116.JPG Previous Rainfall (hrs):0-24Flow:Submerged (not located) Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 02-357 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 US1 City of Oshkosh o20250805084832.JPG Outfall Notes: Upstream manhole located approx 34 ft NW of outfall 02-357. Intermediate area consists of open space. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:798,851 Northing:472,858 Longitude:-88.51577 Latitude:44.01668 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 02-357 NR 216 Class: Inspection Date:8/5/2025 8:53:53 AM Inspector:JCW o20250805084842.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:Moderate Sample ID:250805-86 Time Collected:08:50 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.47 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Blue-green algae from lake. units Temperature (field):76 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):35 Petrol. Sheen Suds Sewage Algae Other Green ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):399 µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 US1 City of Oshkosh Inspection Date:8/22/2024 8:43:50 AM o20240822084134.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Clearly visible in bottl Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.47 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):43 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:240 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 8:47:36 AM o20230717073018.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.74 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:380 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/23/2022 9:10:00 AM o20220923091028.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.8 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in upstream manhole. units Temperature 64 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):41 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:570 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 9:01:46 AM o20210816085830.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.59 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:392 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 US1 City of Oshkosh Inspection Date:8/20/2020 1:06:54 PM o20200820130342.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.83 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 83 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:404 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 2:18:49 PM o20190917131642.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.03 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:404 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 10:15:43 AM o20181022101258.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.17 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 60 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):43 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:506 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 1:35:20 PM o20171017133104.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.57 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:537 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 US1 City of Oshkosh Inspection Date:10/10/2016 10:57:04 AM o20161010105436.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.54 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):37 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:654 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/22/2015 7:15:12 AM o20150922061944.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.84 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:459 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 12:40:37 PM o20141009113842.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.58 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 62 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):35 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:707 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:9/27/2012 8:31:15 AM o20120927073352.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.73 Detergents:0 ppm ppm mg/L 2011 gross solids follow-up. units Temperature 60 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:518 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 02-357 US1 City of Oshkosh Inspection Date:6/20/2012 8:08:37 AM o20120620070908.JPG Previous Rainfall (hrs):24-48Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):43 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Inspection Date:10/3/2011 10:30:08 AM o20111003103104.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.1 Detergents:0 ppm ppm mg/L Significant floatable debris in manhole. units Temperature 61 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):39 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/10/2011 8:51:00 AM o20110510085154.JPG Previous Rainfall (hrs):0-24Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted for upstream manhole prescreening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 City of Oshkosh o20250805152820.JPG Outfall Notes: Storm sewer from Nebraska St discharges to river from south. Outfall not located - pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Arch Material: CMP Diameter (in): Height/Depth (in):36 Width (in):58 Not Physically Located Easting:792,381 Northing:471,745 Longitude:-88.54036 Latitude:44.01362 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43625 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 3:31:46 PM Inspector:JCW o20250805152822.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Sinkholes behind wall, likely settled over pipe. Gross solids and slightly elevated pH in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:Moderate Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 City of Oshkosh Inspection Date:9/10/2024 2:12:37 PM o20240910141136.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Sinkholes behind retaining wall. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:Moderate Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 2:01:19 PM o20230717124542.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 10:30:00 AM o20220824102800.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 10:33:32 AM o20210816103158.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 03-22 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 City of Oshkosh Inspection Date:8/19/2020 2:03:43 PM o20200819140018.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 11:27:00 AM Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 8:34:00 AM o20191008073428.jpg Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:9/18/2019 8:16:51 AM o20190918071544.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Floating gross solids (litter) and detergent in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Page 3 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 City of Oshkosh Inspection Date:10/22/2018 3:53:56 PM o20181022155222.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 3:22:08 PM o20171018151946.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/18/2016 4:04:35 PM o20161018160304.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall not located and assumed submerged - screened upstream at 03-22 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 7:47:01 AM o20150923065132.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Significant sinking above suspected pipe. Outfall not located - screened at 03-22 US1. units Temperature --° F Graffiti:None Damage:Severe Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 4 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 City of Oshkosh Inspection Date:10/9/2014 9:47:52 AM o20141009084834.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-22 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:7/31/2013 12:40:04 PM o20130731114434.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2012 screening follow-up. Outfall not located. Outfall screened upstream at 03-22 US1. Gross solids in upstream mh. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 9:26:54 AM o20120927082846.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged; screened upstream at 03-22 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:6/20/2012 9:22:09 AM o20120620082248.JPG Previous Rainfall (hrs):24-48Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Page 5 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 City of Oshkosh Inspection Date:10/11/2011 9:03:10 AM o20111011090250.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2010 screening follow-up. Outfall fully submerged and not physically located. Outfall screened upstream at 03-22 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:8/18/2010 10:26:01 AM o20100818101918.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 03-22 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/10/2009 Osh09_DSCN6765.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 6 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 US1 City of Oshkosh o20250805153006.JPG Outfall Notes: Upstream catchbasin located approx 55 ft S of outfall 03-22. Intermediate area consists of open space. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:792,376 Northing:471,694 Longitude:-88.54038 Latitude:44.01348 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: N/A NR 216 Class: Inspection Date:8/5/2025 3:34:32 PM Inspector:JCW o20250805153016.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-93 Time Collected:15:29 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):9.03 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Slightly elevated pH likely from algae in river. Floating gross solids (litter) in manhole. units Temperature (field):82 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):47 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):363 µS/cm 2025 Page 1 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 US1 City of Oshkosh Inspection Date:9/10/2024 2:16:02 PM o20240910141348.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.7 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):47 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:380 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 2:03:38 PM o20230717124716.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.61 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):41 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:162 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 10:31:00 AM o20220824102900.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.54 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:395 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 10:36:24 AM o20210816103330.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.74 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):49 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:322 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 US1 City of Oshkosh Inspection Date:8/19/2020 2:04:58 PM o20200819140108.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.13 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. Elevated pH seemed widespread in river. units Temperature 84 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):47 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:338 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 11:28:50 AM o20191105112834.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:0 ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):47 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 8:35:00 AM o20191008073520.jpg Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.58 Detergents:1.2 ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. Floating gross solids (litter) in manhole. units Temperature 56 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):47 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:381 µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:9/18/2019 8:19:32 AM o20190918071726.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.64 Detergents:1 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) and detergent in manhole. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):49 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:372 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Page 3 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 US1 City of Oshkosh Inspection Date:10/22/2018 3:58:28 PM o20181022155408.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.68 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 55 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):49 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:355 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 3:25:56 PM o20171018152158.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.32 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:422 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/18/2016 4:06:54 PM o20161018160430.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.15 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:403 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 7:51:33 AM o20150923065324.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.44 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):46 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:354 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 4 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 US1 City of Oshkosh Inspection Date:10/9/2014 9:52:24 AM o20141009085040.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.79 Detergents:0 ppm ppm mg/L Floatable litter in catchbasin. units Temperature 57 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:442 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:7/31/2013 12:42:35 PM o20130731114610.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.95 Detergents:0 ppm ppm mg/L 2012 screening follow-up. Significant gross solids - similar to previous years. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:450 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 9:27:45 AM o20120927082922.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.32 Detergents:0 ppm ppm mg/L 2011 gross solids follow-up. units Temperature 59 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:398 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:6/20/2012 9:24:19 AM o20120620082508.JPG Previous Rainfall (hrs):24-48Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):46 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Page 5 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-22 US1 City of Oshkosh Inspection Date:10/11/2011 9:05:50 AM o20111011090446.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.13 Detergents:-- ppm ppm mg/L 2010 screening follow-up. No significant change in volume of floatable debris. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):37 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/26/2011 11:19:00 AM o20110526111930.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted to check for floatable debris. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:8/18/2010 10:29:59 AM o20100818102410.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.38 Detergents:0 ppm ppm mg/L Severe floatable debris in catchbasin. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/10/2009 Osh09_DSCN6768.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.3 Detergents:0 ppm ppm mg/L Abnormal detergent analysis result (bubbles). Significant floatables in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 6 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 City of Oshkosh o20250805151158.JPG Outfall Notes: Storm sewer from S Main St discharges to river from south. Outfall not located - pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:793,077 Northing:471,421 Longitude:-88.53772 Latitude:44.01274 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43584 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 3:17:22 PM Inspector:JCW o20250805151200.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 03-35 US1. Gross solids in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 City of Oshkosh Inspection Date:9/19/2024 7:08:43 AM o20240919070528.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 3:03:56 PM o20230717134840.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 10:18:00 AM o20220824101500.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 10:47:35 AM o20210816104428.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 City of Oshkosh Inspection Date:8/19/2020 2:40:57 PM o20200819143634.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 11:44:00 AM o20191105114512.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. Floating gross solids (litter) and detergent in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 8:29:12 AM o20191008072714.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Detergent detection follow-up. Limited screening conducted beyond sampling. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:9/18/2019 8:05:22 AM o20190918070310.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. Floating gross solids (litter) and detergent in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Page 3 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 City of Oshkosh Inspection Date:10/22/2018 3:27:47 PM o20181022152608.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 3:15:43 PM o20171018150844.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/10/2016 9:52:05 AM o20161010094930.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 7:34:32 AM o20150923063720.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 03- 35 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 4 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 City of Oshkosh Inspection Date:10/9/2014 10:33:07 AM o20141009093222.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-35 US1 units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:7/31/2013 12:30:28 PM o20130731113304.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2012 screening follow-up. Outfall not located. Outfall screened upstream at 03-35 US1. Gross solids in upstrem mh. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 9:13:17 AM o20120927081506.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged; screened upstream at 03-35 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:6/20/2012 9:06:10 AM o20120620080844.JPG Previous Rainfall (hrs):24-48Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Page 5 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 City of Oshkosh Inspection Date:10/11/2011 9:36:03 AM o20111011093254.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2010 screening follow-up. Outfall fully submerged and not physically located. Outfall screened upstream at 03-35 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:8/18/2010 9:27:46 AM o20100818092204.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 03-35 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/10/2009 Osh09_DSCN6761.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 03-35 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 6 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 US1 City of Oshkosh o20250805151228.JPG Outfall Notes: Upstream manhole located approx 20 ft WSW of outfall 03-35. Intermediate area consists of open space. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:793,049 Northing:471,407 Longitude:-88.53782 Latitude:44.01270 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 03-35 NR 216 Class: Inspection Date:8/5/2025 3:18:17 PM Inspector:JCW o20250805151234.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-84 Time Collected:15:15 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.98 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature (field):83 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):37 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):419 µS/cm 2025 Page 1 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 US1 City of Oshkosh Inspection Date:9/19/2024 7:09:59 AM o20240919070618.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.59 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:374 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 3:06:44 PM o20230717134952.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.75 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):34 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:396 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 10:19:00 AM o20220824101600.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.1 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:593 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 10:48:38 AM o20210816104502.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.76 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:349 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 US1 City of Oshkosh Inspection Date:8/19/2020 2:41:48 PM o20200819143804.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.44 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. Slightly elevated ammonia. units Temperature 85 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.5 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:346 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 11:45:22 AM o20191105114518.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:0 ppm ppm mg/L Detergent detection follow-up. Limited screening conducted. Floating gross solids (litter) and detergent in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):30 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 8:30:16 AM o20191008072724.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.68 Detergents:1.3 ppm ppm mg/L Detergent detection follow-up. Limited screening conducted beyond sampling. units Temperature 55 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:415 µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:9/18/2019 8:06:15 AM o20190918070320.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.47 Detergents:1.3 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) and detergent in manhole. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:389 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Page 3 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 US1 City of Oshkosh Inspection Date:10/22/2018 3:30:12 PM o20181022152746.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.81 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 56 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):41 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:338 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 3:16:37 PM o20171018151012.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.94 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):35 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:554 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/10/2016 9:52:43 AM o20161010094958.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.54 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 63 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):32 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:391 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 7:36:00 AM o20150923063950.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.64 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in):30 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:359 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 4 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 US1 City of Oshkosh Inspection Date:10/9/2014 10:35:52 AM o20141009093356.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.86 Detergents:0 ppm ppm mg/L Vegetative debris in photo from opening lid. units Temperature 58 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in):32 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:476 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:7/31/2013 12:31:00 PM o20130731113346.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.47 Detergents:0 ppm ppm mg/L 2012 screening follow-up. Significant gross solids. Similar to previous years. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):33 Vegetation:None Benthic Growth:None Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:425 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 9:13:54 AM o20120927081522.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.42 Detergents:0 ppm ppm mg/L 2011 gross solids follow-up. units Temperature 59 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 3 Depth (in):31 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:723 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:6/20/2012 9:08:12 AM o20120620080918.JPG Previous Rainfall (hrs):24-48Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Page 5 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-35 US1 City of Oshkosh Inspection Date:10/11/2011 9:29:50 AM o20111011092832.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Severe Total Chlorine:0 Free Chlorine:0 pH:8.01 Detergents:-- ppm ppm mg/L 2010 screening follow-up. Floatable debris still present. Slight petroleum sheen. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):19 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/26/2011 11:23:00 AM o20110526112400.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted to check for floatable debris. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:8/18/2010 9:32:06 AM o20100818092304.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.46 Detergents:0 ppm ppm mg/L Severe floatable debris in catchbasin. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):34 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.5 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/10/2009 Osh09_DSCN6763.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.23 Detergents:0 ppm ppm mg/L Abnormal detergent analysis result (bubbles). Significant floatables in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):33 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 6 of 6Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 City of Oshkosh o20240919064806.JPG Outfall Notes: 10th Ave storm sewer discharges to river from south. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: Cast Iron Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:794,054 Northing:470,796 Longitude:-88.53400 Latitude:44.01102 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43628 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 2:43:09 PM Inspector:JCW o20250805143812.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Railroad bridge area under construction and outfall typically fully submerged - screened upstream at 03-81 US1. Gross solids in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 City of Oshkosh Inspection Date:9/19/2024 6:54:21 AM o20240919064816.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 2:52:22 PM o20230717133646.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 1:54:00 PM Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 11:09:51 AM o20210816110756.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 City of Oshkosh Inspection Date:8/19/2020 2:16:29 PM o20200819141442.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 3:00:32 PM o20190917135900.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 3:13:39 PM o20181022151216.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 2:50:50 PM o20171018144750.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. Ammonia, detergent and sheen in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 City of Oshkosh Inspection Date:10/10/2016 8:59:12 AM o20161010085808.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 7:10:20 AM o20150923061430.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 03- 81 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 10:00:10 AM o20141009090032.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-81 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Obvious Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:10/11/2011 9:42:33 AM o20111011094236.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2010 screening follow-up. Outfall fully submerged and not physically located. Outfall screened upstream at 03-81 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 City of Oshkosh Inspection Date:8/18/2010 8:38:23 AM o20100818083116.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 03-81 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6745.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 03-81 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Obvious Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 US1 City of Oshkosh o20250805143816.JPG Outfall Notes: Upstream manhole located approx 204 ft SSW of outfall 03-81. Located behind railroad control shed. Intermediate area consists of open space, street right-of-way and railroad right-of-way. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:793,997 Northing:470,596 Longitude:-88.53422 Latitude:44.01047 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 03-81 NR 216 Class: Inspection Date:8/5/2025 2:44:01 PM Inspector:JCW o20250805143826.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-67 Time Collected:14:38 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.95 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature (field):83 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):51 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):303 µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 US1 City of Oshkosh Inspection Date:9/19/2024 6:55:52 AM o20240919065040.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Moderate Total Chlorine:0 Free Chlorine:0 pH:8.67 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Replacement lid too large for casting. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):51 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:419 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 2:55:35 PM o20230717133924.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.69 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Replacement lid too large for casting. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):50 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:401 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 1:55:00 PM o20220822135248.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.43 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:345 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 11:13:37 AM o20210816111026.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.56 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):56 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:317 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 US1 City of Oshkosh Inspection Date:8/19/2020 2:19:30 PM o20200819141648.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.09 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. Elevated pH seemed widespread in river. units Temperature 84 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):50 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:327 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 3:03:50 PM o20190917140134.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.07 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):52 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:399 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 3:18:57 PM o20181022151626.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.62 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 57 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):57 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:357 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 2:55:07 PM o20171018145016.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:Moderate Total Chlorine:0 Free Chlorine:0 pH:7.22 Detergents:0.8 ppm ppm mg/L Elevated ammonia and detergent in sample from manhole pool. Slight sheen observed on surface. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):50 Vegetation:None Benthic Growth:None Stains:None Ammonia:1 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:1020 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 US1 City of Oshkosh Inspection Date:10/10/2016 9:04:32 AM o20161010090136.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:Faint in bottle Turbidity:None Floatables:Moderate Total Chlorine:0 Free Chlorine:0 pH:7.41 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids and petroleum odor and sheen and elevated ammonia. units Temperature 63 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):46 Vegetation:None Benthic Growth:None Stains:None Ammonia:1 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:565 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 7:16:22 AM o20150923061754.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.32 Detergents:0 ppm ppm mg/L units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):52 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:1 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:638 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 10:07:49 AM o20141009090404.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:Moderate Total Chlorine:0 Free Chlorine:0 pH:7.58 Detergents:0 ppm ppm mg/L Petroleum odor and sheen on surface. units Temperature 58 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 2 Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.5 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Obvious Gross Solids:Severe Non-illicit:None Conductivity:679 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:10/11/2011 9:46:04 AM o20111011094434.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.68 Detergents:-- ppm ppm mg/L 2010 screening follow-up. Floatable debris significantly reduced. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.25 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-81 US1 City of Oshkosh Inspection Date:5/26/2011 11:29:00 AM o20110526112952.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted to check for floatable debris. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:8/18/2010 8:43:09 AM o20100818083958.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:6.63 Detergents:0 ppm ppm mg/L Petroleum odor likely from residual petroleum in pipes after 2009 jetting. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):47 Vegetation:None Benthic Growth:None Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6747.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Easily detected Color:Faint in bottle Turbidity:None Floatables:Severe Total Chlorine:0 Free Chlorine:0 pH:6.98 Detergents:0 ppm ppm mg/L Diesel/oil odor, sheen on surface. Floatables with grease. Brown/gray color. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Obvious Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-119 City of Oshkosh o20250805142642.JPG Outfall Notes: Storm sewer from South Park Ave discharges to lake from south wall of boat launch. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):13 Width (in):22 Not Physically Located Easting:793,907 Northing:469,171 Longitude:-88.53456 Latitude:44.00656 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43642 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 2:33:23 PM Inspector:JCW o20250805142658.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged in boat ramp area and not located - screened upstream at 03- 119 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-119 City of Oshkosh Inspection Date:9/10/2024 11:16:29 AM o20240910111118.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-119 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 2:40:00 PM o20230717132448.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-119 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 12:04:00 PM o20220822115730.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-119 US1. Detergent in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 1:21:13 PM o20210816131918.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-119 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-119 City of Oshkosh Inspection Date:10/22/2018 2:02:38 PM o20181022140104.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-119 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 2:44:53 PM Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-119 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/10/2016 8:46:57 AM o20161010084558.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-119 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 7:00:50 AM o20150923060350.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 03- 119 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-119 City of Oshkosh Inspection Date:8/18/2010 7:32:47 AM o20100818072558.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 03-119 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6741.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition: Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-119 US1 City of Oshkosh o20250805142854.JPG Outfall Notes: Upstream manhole located approx 245 ft WSW of outfall 03-119. Intermediate area consists of street right-of-way and paved parking area with no observed inlets. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:793,673 Northing:469,097 Longitude:-88.53545 Latitude:44.00636 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 03-119 NR 216 Class: Inspection Date:8/5/2025 2:34:10 PM Inspector:JCW o20250805142858.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-48 Time Collected:14:29 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.29 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):83 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):29 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):340 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-119 US1 City of Oshkosh Inspection Date:9/10/2024 11:17:22 AM o20240910111338.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.56 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):30 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:398 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 2:43:38 PM o20230717132712.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.25 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):28 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:117 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 12:05:00 PM o20220822120016.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:6.89 Detergents:0.2 ppm ppm mg/L Sample collected from submerged pool in manhole. Detergent detected in sample. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:312 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 1:26:50 PM o20210816132344.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.41 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 79 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):34 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:372 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-119 US1 City of Oshkosh Inspection Date:10/22/2018 2:06:18 PM o20181022140340.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:6.72 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 60 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):32 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.5 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:Moderate Conductivity:773 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 2:45:31 PM o20171018144002.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.18 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):27 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:774 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/10/2016 8:50:36 AM o20161010084816.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Total Chlorine:0 Free Chlorine:0 pH:6.98 Detergents:0 ppm ppm mg/L units Temperature 63 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):25 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:Slight Conductivity:781 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 7:05:01 AM o20150923060646.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.44 Detergents:0 ppm ppm mg/L units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):29 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:516 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-119 US1 City of Oshkosh Inspection Date:8/18/2010 7:36:59 AM o20100818072942.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:Faint in bottle Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.06 Detergents:0 ppm ppm mg/L units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):29 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.5 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:Slight Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6743.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.87 Detergents:0 ppm ppm mg/L units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):27 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 City of Oshkosh o20250805135512.JPG Outfall Notes: Storm sewer from 16th Ave discharges to lake from west. Outfall fully submerged. GPS coordinates approximate. Pipe info from MS4 map. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):33 Width (in):49 Not Physically Located Easting:793,277 Northing:468,020 Longitude:-88.53695 Latitude:44.00341 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-44173 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 2:02:20 PM Inspector:JCW o20250805135514.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 03-173 US1. Gross solids and elevated pH in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 City of Oshkosh Inspection Date:9/10/2024 10:46:03 AM o20240910104228.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US1. Floating gross solids (litter) in upstream manhole. Chlorine due WM break. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 3:31:00 PM o20230717141404.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US1. High ammonia and floating gross solids (algae) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 11:05:00 AM o20220822110242.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:Moderate Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US1. Dense algae obstructing view. Floating gross solids in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 1:06:56 PM o20210816130634.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 City of Oshkosh Inspection Date:9/24/2020 8:57:20 AM o20200924090116.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:QAL 2020 Inspection Date:11/5/2019 1:14:00 PM o20191105131408.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 03-173 US1. Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 8:00:16 AM o20191008065912.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US1. Floating gross solids (litter) in manhole. Detergent detected. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 1:18:45 PM o20181022131820.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 City of Oshkosh Inspection Date:10/18/2017 2:27:05 PM o20171018142348.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US2. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/10/2016 8:27:25 AM o20161010082552.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-173 US2. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 6:48:56 AM o20150923054658.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located during this screening - screened at 13- 173 US2. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/7/2014 1:47:08 PM o20141007124746.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 13-173 US2. Pipe approx 5" below water surface. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 City of Oshkosh Inspection Date:10/11/2011 10:11:07 AM o20111011101022.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2010 screening follow-up. Outfall fully submerged. Outfall screened upstream at 03-173 US2. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:8/17/2010 2:04:29 PM o20100817135838.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 03-173 US2. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 US1 City of Oshkosh o20250805135524.JPG Outfall Notes: Upstream manhole located approx 18 ft W of outfall 03-173. Intermediate area consists of shoreline. Manhole located between railroad tracks and shoreline. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:793,261 Northing:468,022 Longitude:-88.53701 Latitude:44.00341 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 03-173 NR 216 Class: Inspection Date:8/5/2025 2:03:22 PM Inspector:JCW o20250805135528.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-07 Time Collected:13:55 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):9.14 Detergents:0 ppm ppm mg/L Notes:Floating gross solids (litter) and elevated pH in manhole sample. units Temperature (field):83 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):39 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):345 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 US1 City of Oshkosh Inspection Date:9/10/2024 10:48:02 AM o20240910104332.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0.5 Free Chlorine:0 pH:7.69 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole with chlorine from watermain break. Floating gross solids (litter) in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):41 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:462 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 3:31:38 PM o20230717141446.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Easily detected Color:None Turbidity:None Floatables:Severe Total Chlorine:0 Free Chlorine:0 pH:8.07 Detergents:0 ppm ppm mg/L 6" algae mat floating in manhole. Sample collected from submerged pool in manhole. High ammonia in sample. Strong odor from decomposing algae. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:6 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:481 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 11:06:00 AM o20210816130728.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.8 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:450 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 1:13:31 PM o20210816130728.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.46 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 79 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):43 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:337 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 US1 City of Oshkosh Inspection Date:9/24/2020 8:58:24 AM o20200924090226.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.54 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 68 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:405 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:QAL 2020 Inspection Date:11/5/2019 1:15:28 PM o20191105131426.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:0 ppm ppm mg/L Detergent detection follow-up. Limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):32 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 8:01:54 AM o20191008070022.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Moderate Total Chlorine:0 Free Chlorine:0 pH:7.64 Detergents:1 ppm ppm mg/L Manhole 03-173 US2 inaccessible (behind locked gate). Floating gross solids (litter) in manhole. Detergent detected. units Temperature 53 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 4 Depth (in):38 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:592 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 1:24:38 PM o20181022132154.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.18 Detergents:0 ppm ppm mg/L Manhole 03-173 US2 inaccessible (behind locked gate). Floating gross solids (litter) in manhole, including 2 syringes. units Temperature 59 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:1229 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-173 US1 City of Oshkosh Inspection Date:8/17/2010 2:07:11 PM o20100817135854.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Lid bolts rusted tight - could not access. Screened upstream at 03-173 US2. units Temperature --° F Graffiti:None Damage:Moderate Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-477 City of Oshkosh o20250805140740.JPG Outfall Notes: Storm sewer from E 15th Ave discharges to lake from west. Replaces outfall 03-306 (2012). Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):72 Height/Depth (in): Width (in): Not Physically Located Easting:793,453 Northing:468,409 Longitude:-88.53628 Latitude:44.00447 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43408 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 2:10:54 PM Inspector:JCW o20250805140750.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Moderate Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged - screened upstream at 03-477 US1. Significant algae bloom in bay surrounding pipe. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-477 City of Oshkosh Inspection Date:9/10/2024 11:00:27 AM o20240910105844.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-477 US1.Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:10/22/2018 1:40:36 PM o20181022133918.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 03-306 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:8/17/2010 2:28:30 PM o20100817142148.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 03-306 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-477 US1 City of Oshkosh o20250805140916.JPG Outfall Notes: Upstream manhole located approx 63 ft W of outfall 03-477 (formerly 03-306). Intermediate area consists of open space. May have been upgraded prior to 2018 screening. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:793,401 Northing:468,409 Longitude:-88.53648 Latitude:44.00448 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 03-477 NR 216 Class: Inspection Date:8/5/2025 2:13:18 PM Inspector:JCW o20250805140922.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-01 Time Collected:14:10 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.97 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):84 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):73 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):301 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-477 US1 City of Oshkosh Inspection Date:9/10/2024 11:03:28 AM o20240910110052.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.16 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):75 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:361 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:10/22/2018 1:41:52 PM o20181022134128.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.55 Detergents:0 ppm ppm mg/L Sample collected from submerged pool. units Temperature 57 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):66 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:368 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:8/17/2010 2:28:30 PM o20100817142402.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.55 Detergents:0 ppm ppm mg/L Broken manhole rings allow materials to enter manhole below casting. units Temperature 76 ° F Graffiti:None Damage:Minor Erosion:None Deposition:None 0 Depth (in):13 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-604 City of Oshkosh o20250805141620.JPG Outfall Notes: Storm sewer from E 14th Ave discharges to lake from west. Replaces outfall 03-293 (2018). Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):60 Width (in):96 Not Physically Located Easting:793,596 Northing:468,699 Longitude:-88.53574 Latitude:44.00527 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-44082 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 2:19:36 PM Inspector:JCW o20250805141632.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 03-604 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-604 City of Oshkosh Inspection Date:7/17/2023 2:29:30 PM o20230717131418.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-604 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 11:21:00 AM o20220822111642.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:Moderate Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 03-604 US1. Dense algae obstructing view. Ammonia in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:10/10/2016 8:37:23 AM o20161010083458.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 03-293 US1. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:None Depth (in):31 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:8/17/2010 3:02:36 PM o20100817145430.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall screened upstream at 03-293 US1. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:None 0 Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-604 City of Oshkosh Inspection Date:9/9/2009 Osh09_DSCN6736.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall screened upstream at 03-293 US1. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:None 0 Depth (in):32 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-604 US1 City of Oshkosh o20250805141850.JPG Outfall Notes: Upstream manhole located approx 51 ft NW of outfall 03-604 (formerly 03-293). Intermediate area consists of vegetated roadside shoulder. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:793,536 Northing:468,753 Longitude:-88.53597 Latitude:44.00542 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 03-293 NR 216 Class: Inspection Date:8/5/2025 2:24:22 PM Inspector:JCW o20250805141856.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-10 Time Collected:14:19 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.31 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Slightly elevated ammonia likely from algae bloom in lake. units Temperature (field):84 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):110 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0.5 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):238 µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-604 US1 City of Oshkosh Inspection Date:7/17/2023 2:34:10 PM o20230717131656.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.8 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):112 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:429 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 11:22:00 AM o20220822111818.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.67 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Elevated ammonia in sample. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:1 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:428 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:10/10/2016 8:41:32 AM o20161010083910.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.46 Detergents:0 ppm ppm mg/L units Temperature 62 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):33 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:386 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:8/17/2010 3:05:51 PM o20100817145804.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.39 Detergents:0 ppm ppm mg/L units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:Slight Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 03-604 US1 City of Oshkosh Inspection Date:9/9/2009 Osh09_DSCN6739.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.82 Detergents:0 ppm ppm mg/L Abnormal detergent analysis result (bubbles) units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-14 City of Oshkosh o20250925124628.JPG Outfall Notes: Storm sewer from Rockwell Ave discharges to river from east. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: CMP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:788,227 Northing:476,099 Longitude:-88.55616 Latitude:44.02556 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43871 Priority Outfall NR 216 Class: Inspection Date:9/25/2025 12:50:46 PM Inspector:JCW o20250925124630.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 05-14 US1. Gross solids in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-14 City of Oshkosh Inspection Date:9/3/2024 2:09:32 PM o20240903140714.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 10:29:29 AM o20230717091026.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/19/2022 2:10:00 PM o20220919140954.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 3:16:07 PM o20210816151250.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-14 City of Oshkosh Inspection Date:8/19/2020 3:39:27 PM o20200819153632.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 2:47:43 PM o20190918134402.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 5:09:36 PM o20181022170942.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 3:57:26 PM o20171017155038.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-14 City of Oshkosh Inspection Date:10/10/2016 3:43:20 PM o20161010154044.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 05-14 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/24/2015 10:30:54 AM o20150924093340.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 05- 14 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:8/25/2010 2:37:24 PM o20100825142900.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 05-14 US2. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6696.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 05-14 US2. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-14 US1 City of Oshkosh o20250925124734.JPG Outfall Notes: Upstream manhole located approx 30 ft ENE of outfall 05-14. Intermedate area consists of street right-of-way and shoreline. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:788,252 Northing:476,111 Longitude:-88.55607 Latitude:44.02559 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 05-14 NR 216 Class: Inspection Date:9/25/2025 12:51:33 PM Inspector:JCW o20250925124740.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-66 Time Collected:12:48 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.05 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature (field):73 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):44 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):373 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-14 US1 City of Oshkosh Inspection Date:9/3/2024 2:15:07 PM o20240903141300.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Severe Total Chlorine:0 Free Chlorine:0 pH:8.85 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 82 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):45 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:289 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 10:30:04 AM o20230717091240.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.96 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:362 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/19/2022 2:17:00 PM o20220919141718.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.58 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):20 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:Slight Conductivity:672 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 3:16:49 PM o20210816151352.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 85 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):46 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:367 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-14 US1 City of Oshkosh Inspection Date:8/19/2020 3:39:59 PM o20200819154014.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.94 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 87 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):43 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:1577 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 2:48:24 PM o20190918134540.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.9 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):45 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:383 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 5:15:36 PM o20181022171308.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:Cloudy Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.59 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 56 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):47 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:361 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 3:58:36 PM o20171017155256.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.93 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:886 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-14 US1 City of Oshkosh Inspection Date:10/10/2016 3:46:48 PM o20161010154428.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.69 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):41 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:660 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/24/2015 10:36:18 AM o20150924093714.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.98 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:424 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-670 City of Oshkosh o20250925125830.JPG Outfall Notes: Storm sewer from High Ave discharges to river from east. Replaces outfall 05-216 (2019). Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):54 Height/Depth (in): Width (in): Not Physically Located Easting:787,570 Northing:477,350 Longitude:-88.55866 Latitude:44.02899 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43736 Non-Priority Major Outfall NR 216 Class: Inspection Date:9/25/2025 1:01:29 PM Inspector:JCW o20250925125848.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-69 Time Collected:13:00 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.48 Detergents:0 ppm ppm mg/L Notes:Outfall fully submerged and inaccessible from shore. Upstream manhole(s) inside security fence. Sample collected from water near outfall. units Temperature (field):74 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):407 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 05-670 City of Oshkosh Inspection Date:8/19/2020 4:08:22 PM o20200819160816.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located. Upstream manhole inside locked fence - no sample collected. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/24/2015 10:08:00 AM _Submerged.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 05- 216 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:8/26/2010 8:54:01 AM o20100826084708.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 05-216 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 City of Oshkosh o20250805100026.JPG Outfall Notes: W 4th Ave storm sewer discharges to river from south. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:789,805 Northing:472,710 Longitude:-88.55016 Latitude:44.01627 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43544 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 10:05:07 AM Inspector:JCW o20250805100034.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 06-52 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 City of Oshkosh Inspection Date:9/10/2024 2:32:52 PM o20240910143014.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 1:42:08 PM o20230717122710.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 10:50:00 AM o20220824104900.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 2:06:06 PM o20210816140546.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 City of Oshkosh Inspection Date:8/19/2020 11:32:11 AM o20200819113108.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 8:43:23 AM o20190918074208.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 4:31:59 PM o20181022163054.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 11:31:01 AM Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 City of Oshkosh Inspection Date:10/18/2016 2:57:41 PM o20161018145652.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 8:40:05 AM o20150923074404.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 06- 52 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 9:32:21 AM o20141009083144.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-52 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:10/11/2011 11:06:46 AM o20111011110724.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2010 screening follow-up. Outfall fully submerged and not physically located. Outfall screened upstream at 06-52 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 City of Oshkosh Inspection Date:8/18/2010 12:57:36 PM o20100818124946.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 06-52 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 US1 City of Oshkosh o20250805100050.JPG Outfall Notes: Upstream manhole located approx 34 ft SW of outfall 06-52. Intermediate area consists of open space. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:789,787 Northing:472,689 Longitude:-88.55022 Latitude:44.01621 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 06-52 NR 216 Class: Inspection Date:8/5/2025 10:05:49 AM Inspector:JCW o20250805100054.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-51 Time Collected:10:01 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.83 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Grass in photo from manhole entry. units Temperature (field):82 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):45 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):341 µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 US1 City of Oshkosh Inspection Date:9/10/2024 2:33:39 PM o20240910143108.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.83 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):43 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:206 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 1:44:31 PM o20230717122814.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.8 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:370 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 10:51:00 AM o20220824104920.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:6.67 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:374 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 2:08:38 PM o20210816140640.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.84 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 82 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):37 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:347 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 US1 City of Oshkosh Inspection Date:8/19/2020 11:35:26 AM o20200819113240.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.11 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. Elevated pH seemed widespread in river. units Temperature 81 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:332 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 8:45:58 AM o20190918074352.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.4 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:391 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 4:34:14 PM o20181022163150.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.77 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 54 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:348 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 11:33:33 AM o20171018112938.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.39 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:403 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 US1 City of Oshkosh Inspection Date:10/18/2016 3:00:00 PM o20161018145924.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.02 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:418 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 8:42:53 AM o20150923074542.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.74 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:351 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 9:37:13 AM o20141009083526.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.82 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. Filter fabric installed in inlet. units Temperature 56 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):35 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:471 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:10/11/2011 11:09:29 AM o20111011110824.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.13 Detergents:-- ppm ppm mg/L 2010 screening follow-up. Floatable debris significantly reduced. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):35 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-52 US1 City of Oshkosh Inspection Date:5/26/2011 1:05:00 PM o20110526130522.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted to check for floatable debris. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:8/18/2010 1:00:07 PM o20100818125018.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:Slight cloudiness Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.98 Detergents:0 ppm ppm mg/L Significant floatable debris in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):41 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-810 City of Oshkosh o20250805094910.JPG Outfall Notes: Storm sewer from Ohio St discharges to river from west. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):38 Width (in):60 Not Physically Located Easting:789,346 Northing:473,231 Longitude:-88.55190 Latitude:44.01770 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43725 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 9:54:39 AM Inspector:JCW o20250805094914.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 06-810 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-810 City of Oshkosh Inspection Date:9/10/2024 2:48:17 PM o20240910144446.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. Slightly elevated ammonia - possibly algae. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 1:29:54 PM o20230717121140_1.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 11:01:00 AM o20220824105932.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 2:19:36 PM o20210816141900.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-810 City of Oshkosh Inspection Date:8/19/2020 11:18:34 AM o20200819111708.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 9:09:25 AM o20190918080814.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 4:42:27 PM o20181022164110.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 11:21:24 AM o20171018111512.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-810 City of Oshkosh Inspection Date:10/18/2016 2:44:09 PM o20161018144322.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-810 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 9:09:50 AM o20150923081344.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 06- 810 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:8/18/2010 1:15:26 PM o20100818130938.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 06-810 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/10/2009 Osh09_DSCN6798.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-810 US1 City of Oshkosh o20250805094950.JPG Outfall Notes: Upstream manhole located approx 77 ft SW of outfall 06-810. Intermediate area consists of open area. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:789,292 Northing:473,167 Longitude:-88.55211 Latitude:44.01752 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 06-810 NR 216 Class: Inspection Date:8/5/2025 9:55:45 AM Inspector:JCW o20250805095002.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-68 Time Collected:09:50 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.69 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):81 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):53 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):340 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-810 US1 City of Oshkosh Inspection Date:9/10/2024 2:48:58 PM o20240910144558.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Clearly visible in bottl Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:8.05 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Slightly elevated ammonia - likely blue-green algae. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):54 Vegetation:None Benthic Growth:None Stains:None Ammonia:1 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:393 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 1:30:31 PM o20230717121242.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.64 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):52 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:406 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 11:02:00 AM o20220824110016.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.4 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:391 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 2:20:40 PM o20210816142010.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.86 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 82 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):58 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:331 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-810 US1 City of Oshkosh Inspection Date:8/19/2020 11:21:56 AM o20200819111844.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.99 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 80 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:343 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 9:12:03 AM o20190918080922.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.62 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):57 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:387 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 4:45:48 PM o20181022164226.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.7 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 55 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):58 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:370 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 11:23:20 AM o20171018111612.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.85 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):50 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:174 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-810 US1 City of Oshkosh Inspection Date:10/18/2016 2:47:47 PM o20161018144430.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.93 Detergents:0 ppm ppm mg/L units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):52 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:400 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 9:13:00 AM o20150923081432.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.39 Detergents:0 ppm ppm mg/L units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):57 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:372 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:8/18/2010 1:18:51 PM o20100818131246.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.68 Detergents:0 ppm ppm mg/L units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):55 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.5 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/10/2009 Osh09_DSCN6801.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.42 Detergents:0 ppm ppm mg/L Abnormal detergent analysis result (bubbles) units Temperature 82 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):6 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-829 City of Oshkosh o20240910082134.JPG Outfall Notes: Storm sewer from Josslyn St discharges to stream from west. Exits wall approx 9' north of fence. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:786,270 Northing:473,751 Longitude:-88.56360 Latitude:44.01912 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44218 Priority Outfall NR 216 Class: Inspection Date:9/17/2025 10:32:23 AM Inspector:JCW Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall not screened due to potential illicit activity in area - screened upstream at 06- 829 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-829 City of Oshkosh Inspection Date:9/10/2024 8:27:04 AM o20240910082140.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located this visit - screened upstream at 06-829 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/1/2023 3:11:33 PM o20230801141120.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-829 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 1:58:00 PM o20220824135212.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-829 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 10:19:04 AM o20210817101734.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-829 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):43 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-829 City of Oshkosh Inspection Date:8/19/2020 10:50:40 AM o20200819105038.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 06-829 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:10/8/2019 4:16:54 PM o20191008151534.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 06-829 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/25/2018 1:36:22 PM o20181025133432.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 06-829 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/7/2014 10:34:09 AM o20141007093522.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 06-829 US1. Manhole lid in water near end of pipe. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-829 City of Oshkosh Inspection Date:9/5/2013 9:25:55 AM o20130905082920.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2012 screening follow-up. Outfall fully submerged. Outfall screened upstream at 06-829 US1. Gross solids in upstream mh. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):45 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 12:33:16 PM o20120927113654.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged; screened upstream at 06-829 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:6/13/2012 2:26:38 PM o20120613132730.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-829 US1 City of Oshkosh o20250917103118.JPG Outfall Notes: Upstream manhole located approx 360 ft W of outfall 06-829. Intermediate area consists of multifamily residential and commercial properties. Two downstream manholes not located. High school located immediately upstream. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:785,907 Northing:473,756 Longitude:-88.56497 Latitude:44.01913 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 06-831 NR 216 Class: Inspection Date:9/17/2025 10:35:09 AM Inspector:JCW o20250917103124.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250917-65 Time Collected:10:32 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.82 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):73 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):35 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):1667 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-829 US1 City of Oshkosh Inspection Date:9/10/2024 8:29:16 AM o20240910082722.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.73 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:1216 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/1/2023 3:15:50 PM o20230801141440.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.63 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 79 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:Slight Conductivity:927 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 1:59:00 PM o20220824135512.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 79 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:1415 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 10:24:05 AM o20210817102130.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.3 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1449 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-829 US1 City of Oshkosh Inspection Date:8/19/2020 10:56:12 AM o20200819105348.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.57 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 80 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):35 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1508 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:10/8/2019 4:19:45 PM o20191008151850.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.47 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 64 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:1533 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/25/2018 1:40:19 PM o20181025133814.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.64 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 58 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:1550 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/7/2014 10:41:53 AM o20141007094030.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.82 Detergents:0 ppm ppm mg/L Vegetative debris from opening lid. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):30 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1715 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-829 US1 City of Oshkosh Inspection Date:9/5/2013 9:16:05 AM o20130905082002.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.7 Detergents:0 ppm ppm mg/L 2012 screening follow-up. Significant gross solids in manhole - similar to previous years. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):35 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:1666 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 12:28:37 PM o20120927113044.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.72 Detergents:0 ppm ppm mg/L units Temperature 64 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):30 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:1583 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:6/13/2012 2:30:25 PM o20120613133100.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.58 Detergents:0 ppm ppm mg/L Gross solids pre-screening. Bottles in manhole. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):37 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:1765 µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-2296 City of Oshkosh o20250805100706.JPG Outfall Notes: Storm sewer from Michigan St discharges to river from south. Outfall fully submerged - dimensions approximate. (Formerly 06-2380.) Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Box Material: RCP Diameter (in): Height/Depth (in):60 Width (in):96 Not Physically Located Easting:789,894 Northing:472,653 Longitude:-88.54982 Latitude:44.01611 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43444 Non-Priority Major Outfall NR 216 Class: Inspection Date:8/5/2025 10:11:14 AM Inspector:JCW o20250805100740.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged - screened upstream at 06-2296 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):54 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-2296 City of Oshkosh Inspection Date:8/19/2020 11:40:44 AM o20200819113908.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened upstream at 06-2380 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):54 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/23/2015 8:52:13 AM o20150923075720.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged - screened at 06-2380 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):62 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-2296 US1 City of Oshkosh o20250805100930.JPG Outfall Notes: Upstream manhole located approx 115 ft SW of outfall 06-2296 (formerly 06-2380). Intermediate area consists of open space and sidewalk. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:789,820 Northing:472,567 Longitude:-88.55010 Latitude:44.01587 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: 06-2380 NR 216 Class: Inspection Date:8/5/2025 10:14:14 AM Inspector:JCW o20250805100938.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-46 Time Collected:10:10 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.61 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):81 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):58 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):385 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-2296 US1 City of Oshkosh Inspection Date:8/19/2020 11:42:01 AM o20200819114140.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.98 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 81 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):57 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:338 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/23/2015 9:00:36 AM o20150923080126.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.38 Detergents:0 ppm ppm mg/L units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):56 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:Slight Conductivity:328 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-2947 City of Oshkosh o20250807095400.JPG Outfall Notes: Storm sewer from Marys Dr discharges to SE corner of detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:771,766 Northing:471,491 Longitude:-88.61872 Latitude:44.01287 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43821 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 9:57:24 AM Inspector:JCW o20250807095408.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe and apron wet, but no collectable flow at time of inspection. 1" joint displacement. Minor depostiion on apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:Minor Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):1 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-2947 City of Oshkosh Inspection Date:8/23/2022 10:02:00 AM o20220823100122.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L End of pipe dry at time of inspection. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-3027 City of Oshkosh o20250807110050.JPG Outfall Notes: Storm sewer from W. 9th Ave discharges to stream from west. Replaces outfall 06-1132 (2021). Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):43 Width (in):68 Not Physically Located Easting:776,479 Northing:470,797 Longitude:-88.60080 Latitude:44.01099 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44165 Priority Outfall NR 216 Class: Inspection Date:8/7/2025 11:03:19 AM Inspector:JCW o20250807110100.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, significant flow Odor:None Color:None Turbidity:None Floatables:None Sample ID:250807-09 Time Collected:11:02 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.72 Detergents:0 ppm ppm mg/L Notes:Sample collected from pipe flow. units Temperature (field):80 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):3 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):941 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 06-3027 City of Oshkosh Inspection Date:7/19/2023 3:43:24 PM o20230719142846.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.33 Detergents:0 ppm ppm mg/L Sample collected from concentrated flow immediately downstream from pipe. units Temperature 81 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in):3 Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:1103 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/23/2022 12:12:00 PM o20220823121104.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:Easily detected Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.12 Detergents:1 ppm ppm mg/L Sample collected from submerged flow at end of pipe. Detergent detected in sample. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:433 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 09-107 City of Oshkosh o20250805105836.JPG Outfall Notes: Box culvert from Iowa St discharges to river from south. Combines former individual outfalls 09-101a, - 101b and -101c. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Box Material: RCP Diameter (in): Height/Depth (in):54 Width (in):120 Not Physically Located Easting:790,643 Northing:471,886 Longitude:-88.54697 Latitude:44.01401 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44094 Non-Priority Major Outfall NR 216 Class: Inspection Date:8/5/2025 11:02:39 AM Inspector:JCW o20250805105842.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-94 Time Collected:10:59 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.88 Detergents:0 ppm ppm mg/L Notes:Outfall fully submerged. Upstream manhole inaccessible inside construction zone - sample collected from pool inside culvert. units Temperature (field):83 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):919 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 09-107 City of Oshkosh Inspection Date:8/19/2020 12:48:19 PM o20200819124636.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.29 Detergents:0 ppm ppm mg/L Sample collected from submerged flow leaving culvert. Elevated pH seemed widespread in river. units Temperature 86 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:326 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:10/8/2019 8:50:48 AM o20191008075122.JPG Previous Rainfall (hrs):48-72Flow:Submerged, significant flow Odor:None Color:None Turbidity:Cloudy Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.89 Detergents:0 ppm ppm mg/L Sample collected from submerged flow. units Temperature 56 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:Severe Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1257 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-177 City of Oshkosh o20250805082218.JPG Outfall Notes: Storm sewer from Siewert Tr and Hazel St discharges to lake from west. Outfall fully submerged. GPS coordinates approximate. Pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: CMP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:797,689 Northing:477,200 Longitude:-88.52019 Latitude:44.02859 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43857 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 8:27:24 AM Inspector:JCW o20250805082230.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 11-177 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-177 City of Oshkosh Inspection Date:8/22/2024 8:10:57 AM o20240822080854.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-177 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 7:53:09 AM o20230717063750.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-177 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/23/2022 10:10:00 AM o20220923100858.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-177 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 8:11:25 AM o20210816080850.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 11-177 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-177 City of Oshkosh Inspection Date:8/20/2020 1:55:03 PM o20200820135154.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-177 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 8:55:55 AM o20190917075538.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 11-177 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/3/2011 4:12:24 PM o20111003161156.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 11-177 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/10/2011 12:05:00 PM o20110510120530.JPG Previous Rainfall (hrs):0-24Flow:Submerged (not located) Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 11-177 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-177 US1 City of Oshkosh o20250805082258.JPG Outfall Notes: Upstream catchbasin located approx 45 ft WSW of outfall 11-177. Intermediate area consists of open space. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:797,641 Northing:477,197 Longitude:-88.52038 Latitude:44.02859 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 11-177 NR 216 Class: Inspection Date:8/5/2025 8:28:01 AM Inspector:JCW o20250805082312.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-54 Time Collected:08:24 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.53 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):77 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):42 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):381 µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-177 US1 City of Oshkosh Inspection Date:8/22/2024 8:12:19 AM o20240822080918.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:8.62 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):47 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:349 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 7:55:24 AM o20230717063904.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.93 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):43 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:382 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/23/2022 10:21:00 AM o20220923101908.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.88 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):45 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:409 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 8:13:29 AM o20210816081106.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.11 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):48 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:372 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-177 US1 City of Oshkosh Inspection Date:8/20/2020 1:55:38 PM o20200820135226.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.85 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 85 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):45 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:342 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 8:58:14 AM o20190917075612.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.13 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):47 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:316 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/3/2011 4:15:48 PM o20111003161244.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.03 Detergents:0 ppm ppm mg/L units Temperature 68 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/10/2011 12:03:00 PM o20110510120546.JPG Previous Rainfall (hrs):0-24Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted for upstream manhole prescreening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 City of Oshkosh o20250805080746.JPG Outfall Notes: Baldwin Ave storm sewer discharges to lake from west. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: Cast Iron Diameter (in):42 Height/Depth (in): Width (in): Not Physically Located Easting:797,526 Northing:478,061 Longitude:-88.52081 Latitude:44.03096 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43689 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 8:14:14 AM Inspector:JCW o20250805080754.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 11-376 US1. Gross solids in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 City of Oshkosh Inspection Date:8/22/2024 7:33:35 AM o20240822073244.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 7:40:49 AM o20230717062522.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/23/2022 10:56:00 AM o20220923105534.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 7:57:45 AM o20210816075628.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 City of Oshkosh Inspection Date:8/20/2020 2:10:06 PM o20200820140432.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 8:43:35 AM o20190917074332.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 9:42:07 AM o20181022094126.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 1:03:56 PM o20171017130204.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 City of Oshkosh Inspection Date:10/19/2016 7:43:58 AM o20161019074246.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/24/2015 9:06:24 AM o20150924081044.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 11- 376 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:Moderate Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 1:35:21 PM o20141009123438.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-376 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:10/4/2011 9:20:16 AM o20111004092048.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 11-376 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 City of Oshkosh Inspection Date:5/10/2011 12:22:00 PM o20110510122252.JPG Previous Rainfall (hrs):0-24Flow:Submerged (not located) Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 11-376 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:9/8/2009 Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition: Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 US1 City of Oshkosh o20250805080838.JPG Outfall Notes: Upstream manhole located approx 82 ft W of outfall 11-376. Intermediate area consists of open space in park. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - brick Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:797,423 Northing:478,057 Longitude:-88.52121 Latitude:44.03094 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 11-376 NR 216 Class: Inspection Date:8/5/2025 8:15:24 AM Inspector:JCW o20250805080848.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-71 Time Collected:08:10 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.44 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole, including syringe. units Temperature (field):78 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):82 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):489 µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 US1 City of Oshkosh Inspection Date:8/22/2024 7:38:52 AM o20240822073522.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.09 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole, including dead raccoon. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):84 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:549 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 7:43:23 AM o20230717062704.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.22 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):80 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:1550 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/23/2022 10:57:00 AM o20220923105710.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.16 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids approx 5” thick. Slightly elevated ammonia. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):80 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.25 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:648 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 8:01:10 AM o20210816075758.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.67 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):83 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:572 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 US1 City of Oshkosh Inspection Date:8/20/2020 2:10:47 PM o20200820140542.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.64 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 84 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):81 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:382 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 8:47:01 AM o20190917074432.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.94 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):82 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:439 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 9:45:12 AM o20181022094232.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.52 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 55 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):82 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:575 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 1:07:06 PM o20171017130258.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.62 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):79 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:829 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 US1 City of Oshkosh Inspection Date:10/19/2016 7:46:56 AM o20161019074410.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.89 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 58 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):79 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:357 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/24/2015 9:10:22 AM o20150924081150.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.88 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 68 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):81 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:397 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 1:36:18 PM o20141009123616.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.76 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 59 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):74 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:381 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:10/4/2011 9:23:47 AM o20111004092208.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.76 Detergents:0 ppm ppm mg/L units Temperature 62 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):79 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-376 US1 City of Oshkosh Inspection Date:5/10/2011 12:23:00 PM o20110510122336.JPG Previous Rainfall (hrs):0-24Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted for upstream manhole prescreening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:9/8/2009 Osh09_DSCN6622.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.82 Detergents:0 ppm ppm mg/L Abnormal detergent analysis result (bubbles). Significant floating debris in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):81 Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 City of Oshkosh o20250805083808.JPG Outfall Notes: Storm sewer from Washington Ave discharges to lake from west. Outfall fully submerged and not physically located - pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Arch Material: CMP Diameter (in): Height/Depth (in):24 Width (in):35 Not Physically Located Easting:798,806 Northing:473,365 Longitude:-88.51594 Latitude:44.01807 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43342 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 8:42:38 AM Inspector:JCW o20250805083814.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 11-512 US1. Gross solids in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 City of Oshkosh Inspection Date:8/22/2024 8:24:20 AM o20240822082222.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 8:33:02 AM o20230717071958.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/23/2022 9:24:00 AM o20220923092250.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 8:42:01 AM o20210816083746.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 City of Oshkosh Inspection Date:8/20/2020 1:20:27 PM o20200820131742.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 2:05:48 PM o20190917130514.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 9:59:38 AM o20181022095658.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 1:20:48 PM o20171017131910.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 City of Oshkosh Inspection Date:10/10/2016 11:04:16 AM o20161010110406.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/22/2015 7:03:32 AM o20150922060708.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 12:48:49 PM o20141009114820.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 11-512 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:9/27/2012 8:21:03 AM o20120927072324.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged; screened upstream at 11-512 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 City of Oshkosh Inspection Date:6/20/2012 8:23:31 AM o20120620072350.JPG Previous Rainfall (hrs):24-48Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Inspection Date:10/3/2011 12:09:11 PM o20111003121010.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 11-512 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/10/2011 9:08:00 AM o20110510090810.JPG Previous Rainfall (hrs):0-24Flow:Submerged (not located) Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 11-512 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 US1 City of Oshkosh o20250805083826.JPG Outfall Notes: Upstream manhole located approx 34 ft SW of outfall 11-512. Intermediate area consists of open space. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:798,778 Northing:473,348 Longitude:-88.51605 Latitude:44.01803 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 11-512 NR 216 Class: Inspection Date:8/5/2025 8:43:30 AM Inspector:JCW o20250805083836.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-45 Time Collected:08:40 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.12 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature (field):77 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):40 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):387 µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 US1 City of Oshkosh Inspection Date:8/22/2024 8:25:32 AM o20240822082240.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.11 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:73 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 8:37:03 AM o20230717072024.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.15 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole, including two syringes. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:205 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/23/2022 9:26:00 AM o20220923092448.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.84 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in upstream manhole. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:460 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/16/2021 8:42:51 AM o20210816083856.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.65 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):41 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:345 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 US1 City of Oshkosh Inspection Date:8/20/2020 1:21:12 PM o20200820131802.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.07 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. Elevated pH seemed widespread in river/lake. units Temperature 84 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:347 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/17/2019 2:08:21 PM o20190917130614.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.23 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):37 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:333 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/22/2018 10:00:30 AM o20181022100114.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.35 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 57 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:470 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 1:23:39 PM o20171017131930.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.47 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):35 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:581 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 US1 City of Oshkosh Inspection Date:10/10/2016 11:07:16 AM o20161010110444.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.63 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):35 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:514 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/22/2015 7:04:46 AM o20150922060832.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.93 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):37 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:1055 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 12:52:08 PM o20141009115024.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.57 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 62 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:548 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:9/27/2012 8:22:20 AM o20120927072438.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.73 Detergents:0 ppm ppm mg/L 2011 gross solids follow-up. units Temperature 59 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):34 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:416 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 11-512 US1 City of Oshkosh Inspection Date:6/20/2012 8:24:06 AM o20120620072408.JPG Previous Rainfall (hrs):24-48Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Gross solids pre-screening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2012 Inspection Date:10/3/2011 12:13:00 PM o20111003121302.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.39 Detergents:0 ppm ppm mg/L Significant floatable debris in manhole. units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):36 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/10/2011 9:08:00 AM o20110510090830.JPG Previous Rainfall (hrs):0-24Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted for upstream manhole prescreening. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 City of Oshkosh o20250925103246.JPG Outfall Notes: Congress Ave storm sewer discharges to river from east. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: CMP Diameter (in):21 Height/Depth (in): Width (in): Not Physically Located Easting:786,530 Northing:479,312 Longitude:-88.56262 Latitude:44.03437 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-44264 Priority Outfall NR 216 Class: Inspection Date:9/25/2025 10:34:44 AM Inspector:JCW o20250925103250.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 12-569 US1. Graffiti on east bridge abutment. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:Moderate Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 City of Oshkosh Inspection Date:9/3/2024 1:07:39 PM o20240903130646.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-569 US1. Graffiti on nearby bridge abutment. Floating gross solids in manhole. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 11:14:03 AM o20230717095836.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-569 US1. Graffiti on nearby bridge abutment. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/19/2022 3:18:00 PM o20220919151702.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-569 US1. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 9:13:52 AM o20210817091208.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-569 US1. Graffiti on nearby bridge abutment. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 City of Oshkosh Inspection Date:8/19/2020 8:41:26 AM o20200819084114.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located - screened upstream at 12-569 US1. Graffiti on bridge abutment. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 11:19:35 AM o20190918101816.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-569 US1. Graffiti on nearby bridge abutment. Floating gross solids (litter) in MH. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/24/2018 9:23:56 AM o20181024092154.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-569 US1. Graffiti on nearby bridge abutment. Floating gross solids (litter) in MH. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 10:17:17 AM o20171018101412.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-569 US1. Graffiti on nearby bridge abutment. Floating gross solids (litter) in MH. units Temperature --° F Graffiti:Minor Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 City of Oshkosh Inspection Date:10/10/2016 1:26:15 PM o20161010132600.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Graffiti on east bridge abutment. Outfall fully submerged and not located - screened upstream at 12-569 US1. units Temperature --° F Graffiti:Minor Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 11:06:02 AM o20150923100828.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 12- 569 US1. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/7/2014 7:38:26 AM o20141007063712.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-569 US1. Graffiti on east abutment. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:10/11/2011 1:49:07 PM o20111011134840.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2010 screening follow-up. Outfall fully submerged and not physically located. Outfall screened upstream at 12-569 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 City of Oshkosh Inspection Date:8/19/2010 2:37:50 PM o20100819143022.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 12-569 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 US1 City of Oshkosh o20250925103434.JPG Outfall Notes: Upstream manhole located approx 48 ft ESE of outfall 12-569. Intermediate area consists of open space. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:786,578 Northing:479,306 Longitude:-88.56244 Latitude:44.03436 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 12-569 NR 216 Class: Inspection Date:9/25/2025 10:38:06 AM Inspector:JCW o20250925103442.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-25 Time Collected:10:35 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.98 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):73 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):40 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):466 µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 US1 City of Oshkosh Inspection Date:9/3/2024 1:10:38 PM o20240903130832.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.2 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):45 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:206 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 11:17:35 AM o20230717100040.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.39 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:435 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/19/2022 3:24:00 PM o20220919152124.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.5 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:484 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 9:16:38 AM o20210817091344.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.15 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Moderate Non-illicit:None Conductivity:454 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 US1 City of Oshkosh Inspection Date:8/19/2020 8:45:29 AM o20200819084220.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.49 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:349 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 11:22:28 AM o20190918101948.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.3 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):42 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:419 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/24/2018 9:25:23 AM o20181024092322.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.4 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 52 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):44 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:714 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 10:20:25 AM o20171018101542.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.44 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):39 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:1118 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 US1 City of Oshkosh Inspection Date:10/10/2016 1:30:04 PM o20161010132718.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Clearly visible in bottl Turbidity:Slight cloudiness Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.41 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:616 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 11:06:51 AM o20150923101026.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.5 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:441 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/7/2014 7:39:34 AM o20141007063948.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.66 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature 59 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):34 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:771 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:10/11/2011 1:51:24 PM o20111011134946.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.63 Detergents:-- ppm ppm mg/L 2010 screening follow-up. Floatable debris significantly reduced. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):32 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-569 US1 City of Oshkosh Inspection Date:5/26/2011 2:40:00 PM o20110526144100.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted to check for floatable debris. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:8/19/2010 2:41:43 PM o20100819143434.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.59 Detergents:0 ppm ppm mg/L Severe floatable debris units Temperature 79 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):38 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-576 City of Oshkosh o20250925102306.JPG Outfall Notes: Algoma Blvd storm sewer discharges to Fox River from east. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Arch Material: CMP Diameter (in): Height/Depth (in):44 Width (in):72 Not Physically Located Easting:785,844 Northing:481,155 Longitude:-88.56524 Latitude:44.03942 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43553 Priority Outfall NR 216 Class: Inspection Date:9/25/2025 10:22:38 AM Inspector:JCW o20250925102308.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 12-576 US1. Gross solids in manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-576 City of Oshkosh Inspection Date:9/3/2024 12:54:52 PM o20240903125318.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-576 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:10/24/2018 9:35:27 AM o20181024093352.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-576 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 10:05:54 AM o20171018100254.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-576 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/10/2016 1:14:55 PM o20161010131430.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-576 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-576 City of Oshkosh Inspection Date:9/23/2015 3:11:43 PM o20150923141532.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located- screened at 12- 576 US1 units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 7:43:34 AM o20141009064412.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 12-576 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:8/19/2010 1:47:19 PM o20100819133944.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 12-576 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6673.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-576 US1 City of Oshkosh o20250925101954.JPG Outfall Notes: Upstream manhole located approx 52 ft ENE of outfall 12-576. Intermediate area consists of residential lawn area and shoreline. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:785,916 Northing:481,123 Longitude:-88.56496 Latitude:44.03934 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 12-576 NR 216 Class: Inspection Date:9/25/2025 10:23:17 AM Inspector:JCW o20250925102000.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-13 Time Collected:10:21 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.14 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature (field):73 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):67 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):416 µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-576 US1 City of Oshkosh Inspection Date:9/3/2024 12:56:18 PM o20240903125400.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.56 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 80 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):71 Vegetation:None Benthic Growth:None Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:420 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:10/24/2018 9:37:10 AM o20181024093506.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.77 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 51 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):77 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:614 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/18/2017 10:08:19 AM o20171018100406.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.94 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):69 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:650 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/10/2016 1:17:02 PM o20161010131500.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.67 Detergents:0 ppm ppm mg/L units Temperature 67 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):69 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:496 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-576 US1 City of Oshkosh Inspection Date:9/23/2015 3:14:15 PM o20150923141608.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.45 Detergents:0 ppm ppm mg/L units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):70 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:361 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/9/2014 7:46:02 AM o20141009064434.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.38 Detergents:0 ppm ppm mg/L Floating gross solids (litter) inside manhole. units Temperature 53 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):66 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:663 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Inspection Date:8/19/2010 1:50:40 PM o20100819134200.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.85 Detergents:0 ppm ppm mg/L units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):72 Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Inspection Date:9/9/2009 Osh09_DSCN6675.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.46 Detergents:0 ppm ppm mg/L Abnormal detergent analysis result (bubbles). Significant floatables (bottles) in manhole. units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):68 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Severe Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-925 City of Oshkosh o20250925100232.JPG Outfall Notes: Algoma Blvd storm sewer discharges to riprap channel from east. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):48 Height/Depth (in): Width (in): Not Physically Located Easting:785,033 Northing:484,992 Longitude:-88.56834 Latitude:44.04995 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43835 Non-Priority Major Outfall NR 216 Class: Inspection Date:9/25/2025 10:06:18 AM Inspector:JCW o20250925100334.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-61 Time Collected:10:05 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.43 Detergents:0 ppm ppm mg/L Notes:Traffic at upstream manhole - sample collected from outfall pool. Scour hole immediately downstream of outfall. units Temperature (field):71 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:Minor Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):2 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:Slight Natural Suds/FoamNatural Sheen Conductivity (field):1074 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-925 City of Oshkosh Inspection Date:8/19/2020 8:11:39 AM o20200819080916.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.38 Detergents:0 ppm ppm mg/L Sample collected from pipe flow. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1305 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/23/2015 1:34:27 PM o20150923123638.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.16 Detergents:0 ppm ppm mg/L units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1056 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:7/3/2013 7:24:06 AM o20130703062810.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.1 Detergents:0 ppm ppm mg/L Sample collected from submerged pipe flow. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:None Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1278 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/2/2009 Osh09_DSCN6305.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall screened upstream at 12-925 US2. Faint sulfide odor. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):4 Vegetation: Benthic Growth:Slight Stains: Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-68 City of Oshkosh o20250807125332.JPG Outfall Notes: Universal St storm sewer discharges to stream from west. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: CMP Diameter (in):18 Height/Depth (in): Width (in): Not Physically Located Easting:778,343 Northing:464,494 Longitude:-88.59369 Latitude:43.99370 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43902 Non-Priority Major Outfall NR 216 Class: Inspection Date:8/7/2025 12:59:09 PM Inspector:JCW o20250807125338.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe and apron wet, but no collectable flow at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:Moderate Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):1 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-68 City of Oshkosh Inspection Date:9/15/2020 2:47:21 PM o20200915144706.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Apron backpitched, with no flow leaving apron. No sample collected. Metal apron corroded. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/28/2015 8:45:46 AM o20150928074748.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened at 13-68 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:Slight Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:7/30/2013 9:08:31 AM o20130730081156.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall submerged upstream at 13-68 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in):2 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/3/2009 Osh09_DSCN6413.JPG Previous Rainfall (hrs):72+Flow:None Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Wet, but no flow leaving pipe. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:1 Depth (in):0 Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-471 City of Oshkosh o20250925122832.JPG Outfall Notes: Storm sewer from 9th Ave discharges to stream north of road. Upstream manhole not accessible. Location Map Major Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):48 Width (in):76 Not Physically Located Easting:783,683 Northing:470,710 Longitude:-88.57342 Latitude:44.01077 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43360 Priority Outfall NR 216 Class: Inspection Date:9/25/2025 12:33:20 PM Inspector:JCW o20250925122922.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, significant flow Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-07 Time Collected:12:30 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.46 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged flow inside pipe. Rocks in pipe, downstream channel erosion. units Temperature (field):73 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:Moderate Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):27 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:Slight Natural Suds/FoamNatural Sheen Conductivity (field):507 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-471 City of Oshkosh Inspection Date:9/10/2024 8:54:39 AM o20240910085118.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.2 Detergents:0 ppm ppm mg/L Channel erosion downstream of pipe. Sample collected from submerged flow. Sediment and rocks in pipe. units Temperature 67 ° F Graffiti:None Damage:None Erosion:Moderate Deposition:Minor 5 Depth (in):33 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:407 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/9/2023 12:32:43 PM o20230809113102.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.3 Detergents:0 ppm ppm mg/L Sample collected from concentrated flow immediately downstream from outfall. Downstream channel erosion. units Temperature 81 ° F Graffiti:None Damage:None Erosion:Moderate Deposition:Moderate 12 Depth (in):32 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:554 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/22/2022 9:59:00 AM o20220822095708.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.78 Detergents:0.3 ppm ppm mg/L Sample collected from submerged flow at end of pipe. Detergent and slightly elevated ammonia in sample. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):24 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0.25 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:Slight Conductivity:476 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/23/2021 3:10:59 PM o20210823151038.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.81 Detergents:1 ppm ppm mg/L Severe channel erosion downstream of pipe. Sample collected from submerged flow. Detergent detected in sample. units Temperature 79 ° F Graffiti:None Damage:None Erosion:Severe Deposition:None Depth (in):17 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:1140 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-471 City of Oshkosh Inspection Date:10/28/2020 4:23:00 PM o20201028162329.jpg Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:0 ppm ppm mg/L Detergent follow-up. Sample collected from pipe flow. Water was cloudy. units Temperature --° F Graffiti:None Damage:None Erosion:Moderate Deposition:Moderate 12 Depth (in):28 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:QAL 2020 Inspection Date:8/20/2020 12:09:18 PM o20200820121004.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:Moderate Total Chlorine:0 Free Chlorine:0 pH:7.76 Detergents:0.6 ppm ppm mg/L No flow appears to be leaving pool at end of outfall. Sample collected from pool -detergent detected. units Temperature 81 ° F Graffiti:None Damage:None Erosion:Moderate Deposition:Moderate 12 Depth (in):24 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:453 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 2:27:14 PM o20191105142746.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:8.18 Detergents:0.8 ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. pH in normal range; detergent detected. units Temperature 45 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):20 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:680 µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:9/18/2019 3:16:56 PM o20190918141444.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.27 Detergents:0 ppm ppm mg/L Downstream bank erosion. Sample collected from submerged flow in pipe. High pH detected. units Temperature 77 ° F Graffiti:None Damage:None Erosion:Severe Deposition:None Depth (in):20 Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:368 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-471 City of Oshkosh Inspection Date:10/26/2018 1:26:25 PM o20181025093132.JPG Previous Rainfall (hrs):72+Flow:Submerged, significant flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.18 Detergents:0.4 ppm ppm mg/L Detergent detection follow-up. Limited screening conducted beyond sampling. units Temperature 54 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):26 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:1183 µS/cm in. Condition Assessment Type:Repeat NotesInspector:KMK 2018 Inspection Date:10/25/2018 9:33:47 AM o20181025093132.JPG Previous Rainfall (hrs):72+Flow:Submerged, significant flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.16 Detergents:0.5 ppm ppm mg/L Downstream bank erosion. Sample collected from submerged flow in pipe. Detergent detected. units Temperature 51 ° F Graffiti:None Damage:None Erosion:Moderate Deposition:None Depth (in):26 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:1209 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:6/13/2012 12:53:24 PM o20120613115412.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.91 Detergents:0 ppm ppm mg/L No flow leaving pool on apron. Downstream cannel dry. Sample collected from apron pool. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):19 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:1579 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Inspection Date:9/4/2009 Osh09_DSCN6503.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.38 Detergents:0 ppm ppm mg/L units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):38 Vegetation: Benthic Growth:Slight Stains: Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-2042 City of Oshkosh o20250925091224.JPG Outfall Notes: Storm sewer from Algoma Blvd discharges to wet area west of road. Location Map Major Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):19 Width (in):30 Not Physically Located Easting:784,342 Northing:486,380 Longitude:-88.57097 Latitude:44.05375 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43621 Non-Priority Major Outfall NR 216 Class: Inspection Date:9/25/2025 9:14:17 AM Inspector:JCW o20250925091228.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe and channel dry at time of inspection. Rocks on apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 12-2042 City of Oshkosh Inspection Date:8/19/2020 8:01:27 AM o20200819075900.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Pipe dry; sediment on apron wet at time of inspection. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/23/2015 1:20:16 PM o20150923122254.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Pipe flowline dry at time of inspection. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1098 City of Oshkosh o20250807122434.JPG Outfall Notes: Storm sewer from AmCor plant receiving area discharges to channel from south. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:778,349 Northing:463,931 Longitude:-88.59367 Latitude:43.99216 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43752 Priority Outfall NR 216 Class: Inspection Date:8/7/2025 12:27:21 PM Inspector:JCW o20250807122438.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Sample ID:250807-92 Time Collected:12:25 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.59 Detergents:0 ppm ppm mg/L Notes:Sample collected from concentrated flow immediately downstream from outfall. units Temperature (field):75 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):15 Depth (in):24 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):1483 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1098 City of Oshkosh Inspection Date:9/19/2024 8:52:23 AM o20240919085010.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.29 Detergents:0 ppm ppm mg/L Sample collected from concentrated flow 4 ft downstream from outfall pipe. units Temperature 68 ° F Graffiti:None Damage:None Erosion:None Deposition:Severe 16 Depth (in):23 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1475 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/19/2023 3:08:27 PM o20230719135146.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.16 Detergents:0 ppm ppm mg/L Sample collected from concentrated flow immediately downstream from outfall. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 16 Depth (in):24 Vegetation:None Benthic Growth:Severe Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1956 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/18/2022 2:17:00 PM o20220818140940.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:Easily detected Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.15 Detergents:0 ppm ppm mg/L Sample collected from submerged flow at end of pipe. Elevated ammonia. Tracking revealed santiary cross connection. units Temperature 80 ° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 18 Depth (in):6 Vegetation:None Benthic Growth:Severe Stains:None Ammonia:3 ppm Sampling Results Submerged:Fully Sample Location:Flow Illicit Discharge Potential:Obvious Gross Solids:None Non-illicit:None Conductivity:1805 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/31/2021 7:49:46 AM o20210831074728.JPG Previous Rainfall (hrs):48-72Flow:Submerged, significant flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:6.98 Detergents:0 ppm ppm mg/L Sample collected from concentrated flow immediately downstream of pipe. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 16 Depth (in): Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1980 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1098 City of Oshkosh Inspection Date:10/24/2018 3:06:28 PM o20181024150410.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 13-1098 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):24 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/19/2017 11:22:01 AM Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.29 Detergents:0 ppm ppm mg/L Sample collected from submerged flow at end of pipe. Photo not available. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 16 Depth (in):23 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1404 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/19/2016 3:04:11 PM o20161019150326.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 13-1098 US1. End of pipe recently excavated. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Severe 16 Depth (in):22 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/24/2015 3:10:53 PM o20150924141536.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall not located - screened at 13-1098 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1098 City of Oshkosh Inspection Date:7/30/2013 7:57:44 AM o20130730070410.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Pipe not located in grassy stream bank. Screened upstream at 13-1098 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/3/2009 Osh09_DSCN6427.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:18 Depth (in):23 Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1174 City of Oshkosh o20200915141614.JPG Outfall Notes: Universal St storm sewer discharges to channel from west. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Pond Inlet Shape: Pipe - Arch Material: CMP Diameter (in): Height/Depth (in):36 Width (in):58 Not Physically Located Easting:778,281 Northing:463,908 Longitude:-88.59392 Latitude:43.99209 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43977 Non-Priority Major Outfall NR 216 Class: Inspection Date:8/7/2025 12:48:00 PM Inspector:JCW o20250807123230.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall inaccessible for screening due to vegetation and terrain - screened upstream at 13-1174 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1174 City of Oshkosh Inspection Date:9/15/2020 2:19:39 PM o20200915141618.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 13-1174 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 2 Depth (in):21 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/24/2015 2:44:46 PM o20150924134906.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened at 13-1174 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):24 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:7/30/2013 8:07:14 AM o20130730071554.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Significant woody branches and roots blocking end of pipe. Partially submerged - screened upstream at 13-1174 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):23 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/3/2009 Osh09_DSCN6420.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:7 Depth (in):34 Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1174 US1 City of Oshkosh o20250807123448.JPG Outfall Notes: Upstream manhole (inlet) located approx 112 ft SSW of outfall 13-1174. Intermediate area consists of driveway to industrial property. Location Map Major Outfall - Alternate Location Discharge Location: Water of the State Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:778,246 Northing:463,802 Longitude:-88.59405 Latitude:43.99181 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 13-1174 NR 216 Class: Inspection Date:8/7/2025 12:40:07 PM Inspector:JCW o20250807123454.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250807-38 Time Collected:12:32 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.54 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):77 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):15 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):1880 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1174 US1 City of Oshkosh Inspection Date:9/15/2020 2:31:37 PM o20200915142706.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:8 Detergents:0 ppm ppm mg/L Sample collected from submerged flow in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):18 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1189 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/24/2015 3:01:21 PM o20150924140256.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.84 Detergents:0 ppm ppm mg/L units Temperature 68 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):21 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:1357 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:7/30/2013 8:27:20 AM o20130730073052.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.19 Detergents:0 ppm ppm mg/L units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):21 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1606 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/3/2009 Osh09_DSCN6850.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:0 Free Chlorine:0 pH:8.04 Detergents:0 ppm ppm mg/L units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):25 Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1283 City of Oshkosh o20200915142126.JPG Outfall Notes: Universal St storm sewer discharges to channel from west. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Arch Material: CMP Diameter (in): Height/Depth (in):40 Width (in):65 Not Physically Located Easting:778,274 Northing:463,917 Longitude:-88.59395 Latitude:43.99212 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43828 Non-Priority Major Outfall NR 216 Class: Inspection Date:8/7/2025 12:40:00 PM Inspector:JCW o20250807123058.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall inaccessible for screening due to vegetation and terrain - screened upstream at 13-1283 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1283 City of Oshkosh Inspection Date:9/15/2020 2:24:09 PM o20200915142330.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 13-1283 US1. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:Moderate 16 Depth (in):23 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/24/2015 2:47:56 PM o20150924135020.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened at 13-1283 US1. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:Moderate 18 Depth (in):27 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:7/30/2013 8:06:45 AM o20130730070826.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall screened upstream at 13-1283 US1. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:Moderate 16 Depth (in):28 Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/3/2009 Osh09_DSCN6417.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:17 Depth (in):33 Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1283 US1 City of Oshkosh o20250807124306.JPG Outfall Notes: Upstream manhole(inlet) located approx 112 ft SSW of outfall 13-1283. Intermediate area consists of street right-of-way. Drop inlet. Location Map Major Outfall - Alternate Location Discharge Location: Water of the State Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:778,246 Northing:463,883 Longitude:-88.59405 Latitude:43.99203 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 13-1283 NR 216 Class: Inspection Date:8/7/2025 12:48:59 PM Inspector:JCW o20250807124314.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Sample ID:250807-43 Time Collected:12:43 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.75 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged flow in manhole. units Temperature (field):77 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):14 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):1086 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1283 US1 City of Oshkosh Inspection Date:9/15/2020 2:37:15 PM o20200915143358.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.52 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):10 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:851 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/24/2015 2:54:36 PM o20150924135612.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.28 Detergents:0 ppm ppm mg/L units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):17 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:Slight Conductivity:918 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:7/30/2013 8:20:12 AM o20130730072308.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.59 Detergents:0 ppm ppm mg/L units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):16 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1221 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/3/2009 Osh09_DSCN6423.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:0 Free Chlorine:0 pH:7.32 Detergents:0 ppm ppm mg/L units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):21 Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1552 City of Oshkosh o20250807114350.JPG Outfall Notes: Storm sewer from W 20th Ave discharges to lowland at NW corner of W 20th Ave and S Washburn St. Location Map Major Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):19 Width (in):30 Not Physically Located Easting:780,329 Northing:465,506 Longitude:-88.58615 Latitude:43.99648 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43781 Non-Priority Major Outfall NR 216 Class: Inspection Date:8/7/2025 11:45:56 AM Inspector:JCW o20250807114356.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe and apron wet, but no collectable flow at time of inspection. Cattails and sediment on apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):8 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1552 City of Oshkosh Inspection Date:9/15/2020 10:27:10 AM o20200915102420.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Sediment wet, but no flow at time of inspection. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 7 Depth (in): Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1588 City of Oshkosh o20250807120154.JPG Outfall Notes: Universal St storm sewer discharges to stream from east. Location Map Minor Outfall Discharge Location: Adjacent Municipality Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: CMP Diameter (in):36 Height/Depth (in): Width (in): Not Physically Located Easting:778,524 Northing:461,359 Longitude:-88.59299 Latitude:43.98510 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43731 Priority Outfall NR 216 Class: Inspection Date:8/7/2025 12:04:27 PM Inspector:JCW o20250807120204.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Sample ID:250807-72 Time Collected:12:02 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.54 Detergents:0 ppm ppm mg/L Notes:Sample collected from concentrated flow immediately downstream of outfall. Deposition on apron. units Temperature (field):75 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):2 Depth (in):4 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):755 µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1588 City of Oshkosh Inspection Date:9/19/2024 9:20:23 AM o20240919094210.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.75 Detergents:0 ppm ppm mg/L Sample collected from concentrated flow immediately downstream from outfall pipe. Elevated conductivity in sample. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 3 Depth (in):4 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:Slight Conductivity:2500 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:10/24/2018 12:40:02 PM o20181024123744.JPG Previous Rainfall (hrs):72+Flow:Moderate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.22 Detergents:0 ppm ppm mg/L Sample collected from flow from end of pipe. units Temperature 55 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in): Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1515 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/19/2017 11:10:14 AM o20171019110648.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables: Total Chlorine:0 Free Chlorine:0 pH:7.32 Detergents:0.3 ppm ppm mg/L Sample collected from flow from end of pipe. units Temperature 64 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1586 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/19/2016 2:54:11 PM o20161019145234.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.3 Detergents:0 ppm ppm mg/L Sample collected from area of concentrated flow immediately downstream from outfall. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1979 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-1588 City of Oshkosh Inspection Date:9/24/2015 2:14:57 PM o20150924131716.JPG Previous Rainfall (hrs):72+Flow:Moderate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.31 Detergents:0 ppm ppm mg/L Moderate flow into detention basin. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1648 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:7/30/2013 6:33:19 AM o20130730053908.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.38 Detergents:0 ppm ppm mg/L units Temperature 63 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 3 Depth (in): Vegetation:None Benthic Growth:Slight Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1764 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-2563 City of Oshkosh o20250807115004.JPG Outfall Notes: Storm sewer from south side of W 20th Ave dishcarges to lowland on NW corner of W 20th Ave and S Washburn St. Location Map Major Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:780,544 Northing:465,572 Longitude:-88.58533 Latitude:43.99667 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44111 Non-Priority Major Outfall NR 216 Class: Inspection Date:8/7/2025 11:52:15 AM Inspector:JCW o20250807115010.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. Pool with muddy water immediately downstream. NW corner of concrete apron broken. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:Minor Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-2563 City of Oshkosh Inspection Date:9/15/2020 10:23:12 AM o20200915102008.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Pipe dry at time of inspection. Corner of concrete apron broken off. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-2736 City of Oshkosh o20250807112744.JPG Outfall Notes: Storm sewer from Homestead Dr and S Oakwood Rd discharges to stream from south. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):29 Width (in):45 Not Physically Located Easting:775,917 Northing:470,549 Longitude:-88.60293 Latitude:44.01030 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44018 Non-Priority Major Outfall NR 216 Class: Inspection Date:8/7/2025 11:29:26 AM Inspector:JCW o20250807112752.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall partially submerged- screened upstream at 13-2736 US2. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):9 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-2736 City of Oshkosh Inspection Date:8/20/2020 10:15:52 AM o20200820101342.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 13-2736 US2. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):10 Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 2:13:00 PM o20191105141222.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 13-2736 US2. Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):15 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 2:58:39 PM o20191008135730.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 13-2736 US2. Detergent detected in sample. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):15 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-2736 US2 City of Oshkosh o20250807113316.JPG Outfall Notes: Upstream curb inlet located approx 49 ft SW of outfall 13-2736. Intermediate area consists of street right-of-way. First upstream manhole in heavy traffic. Location Map Major Outfall - Alternate Location Discharge Location: Water of the State Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:775,898 Northing:470,506 Longitude:-88.60301 Latitude:44.01019 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 13-3367 NR 216 Class: Inspection Date:8/7/2025 11:31:14 AM Inspector:JCW o20250807113328.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250807-20 Time Collected:11:30 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.73 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):79 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):13 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):960 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 13-2736 US2 City of Oshkosh Inspection Date:8/20/2020 10:20:25 AM o20200820101712.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.26 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 77 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):12 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1039 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 2:14:00 PM o20191105141322.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:1.3 ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. Detergent detected in sample. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):16 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 3:01:59 PM o20191008135938.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.74 Detergents:1.1 ppm ppm mg/L Sample collected from submerged pool in outfall. Detergent detected in sample. Sampled from inlet due to busy street. units Temperature 64 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):19 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:799 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 14-996 City of Oshkosh o20171019120112.JPG Outfall Notes: Hughes St storm sewer discharges to stream from west. Inside Oshkosh Defense testing facility security fence. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):48 Height/Depth (in): Width (in): Not Physically Located Easting:791,155 Northing:462,710 Longitude:-88.54500 Latitude:43.98884 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43844 Priority Outfall NR 216 Class: Inspection Date:8/5/2025 12:49:57 PM Inspector:JCW o20250805124408.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall located behind locked security fence - screened upstream at 14-996 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 14-996 City of Oshkosh Inspection Date:9/10/2024 12:56:22 PM o20240910125206.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall located behind locked security fence - screened upstream at 14-996 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/19/2023 9:45:00 AM o20230719094518.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall inaccessible inside secured Oshkosh Corporation testing facility. Screened upstream at 14-996 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:10/19/2017 12:02:52 PM o20171019120120.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.48 Detergents:0 ppm ppm mg/L Upstream inlet dry - sample collected from submerged pool at end of pipe. 4" joint displacement. units Temperature 61 ° F Graffiti:None Damage:Moderate Erosion:None Deposition:None Depth (in):1 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:740 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:7/31/2013 7:06:55 AM Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Inside locked security fence. Screened upstream at 14-996 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 14-996 City of Oshkosh Inspection Date:9/4/2009 Osh09_DSCN6564.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):5 Vegetation: Benthic Growth:Slight Stains: Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 14-996 US1 City of Oshkosh o20250805124440.JPG Outfall Notes: Upstream curb inlet located approx 139 ft NW of outfall 14-996. Intermediate area consists of open space and wooded area. Location Map Major Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:791,045 Northing:462,797 Longitude:-88.54542 Latitude:43.98908 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 14-996 NR 216 Class: Inspection Date:8/5/2025 12:50:37 PM Inspector:JCW o20250805124448.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-13 Time Collected:12:44 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.20 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Upstream end of airport culvert dry. units Temperature (field):84 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):5 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):868 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 14-996 US1 City of Oshkosh Inspection Date:9/10/2024 12:57:12 PM o20240910125334.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.62 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):5 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:353 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/19/2023 11:03:21 AM o20230719094606.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:Moderate Total Chlorine:0 Free Chlorine:0 pH:7.47 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole had elevated ammonia. Initial tracking showed potential source west of road. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):5 Vegetation:None Benthic Growth:None Stains:None Ammonia:3 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:750 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:7/31/2013 7:13:15 AM o20130731061500.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.67 Detergents:0 ppm ppm mg/L units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):5 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0.5 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:431 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/4/2009 Osh09_DSCN6567.JPG Previous Rainfall (hrs):72+Flow:Moderate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.63 Detergents:0 ppm ppm mg/L units Temperature 82 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):0 Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-2243 City of Oshkosh o20250925134552.JPG Outfall Notes: Storm sewer from CTH A discharges to stream from west. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:795,685 Northing:487,899 Longitude:-88.52783 Latitude:44.05794 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43448 Non-Priority Major Outfall NR 216 Class: Inspection Date:9/25/2025 1:48:29 PM Inspector:JCW o20250925134554.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-75 Time Collected:13:46 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.74 Detergents:0 ppm ppm mg/L Notes:Outfall fully submerged. Heavy traffic at upstream manhole in highway - sample collected inside submerged pipe. units Temperature (field):72 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):24 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):1231 µS/cm 2025 Page 1 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-2243 City of Oshkosh Inspection Date:9/24/2020 8:36:06 AM o20200924083040.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 15-2243 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:QAL 2020 Inspection Date:11/5/2019 10:24:00 AM o20191105102346.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 11:47:00 AM Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 15-2243 US1. Detergent in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/6/2011 10:18:45 AM o20111006102246.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall screened upstream at 15-2243 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):20 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Page 2 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-2243 City of Oshkosh Inspection Date:5/26/2011 10:24:00 AM o20110526102404.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 15-2243 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:9/8/2009 Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition: Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 3 of 3Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-3339 City of Oshkosh o20250917132400.JPG Outfall Notes: Storm sewer from N Main St discharges to NE corner of detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):54 Height/Depth (in): Width (in): Not Physically Located Easting:792,968 Northing:484,557 Longitude:-88.53815 Latitude:44.04877 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43714 Priority Outfall NR 216 Class: Inspection Date:9/17/2025 1:27:07 PM Inspector:JCW o20250917132416.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:Severe Sample ID:250917-05 Time Collected:13:27 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.99 Detergents:0 ppm ppm mg/L Notes:Sample collected from pipe flow. Blue stains on riprap on north side of apron - possibly from blue-green algae. units Temperature (field):79 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):2 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):1808 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-3339 City of Oshkosh Inspection Date:7/17/2023 4:07:18 PM o20230717145140.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.86 Detergents:0 ppm ppm mg/L Log on apron. Outfall partially submerged, upstream curb inlet wet, but no collectable flow. Sample collected from outfall pool due to 2022 detect. units Temperature 71 ° F Graffiti:None Damage:Minor Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:1634 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/30/2022 9:37:00 AM o20220930093620.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 15-3339 US1. Abnormal detergent result from upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:Severe Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-3373 City of Oshkosh o20250917134016.JPG Outfall Notes: Storm sewer from Comet St discharges to south side of detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):27 Height/Depth (in): Width (in): Not Physically Located Easting:792,769 Northing:483,851 Longitude:-88.53891 Latitude:44.04683 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43812 Priority Outfall NR 216 Class: Inspection Date:9/17/2025 1:43:03 PM Inspector:JCW o20250917134020.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall partially submerged - screened upstream at 15-3373. Elevated ammonia and detergent in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):3 Depth (in):6 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:Moderate Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:Slight Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-3373 City of Oshkosh Inspection Date:9/3/2024 2:58:57 PM o20240903145732.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 15-3373 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 3 Depth (in):8 Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 3:50:54 PM o20230717143516.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 15-3373 US1. Detergent detected in upsream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):5 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/30/2022 9:26:00 AM o20220930092356.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.55 Detergents:0.25 ppm ppm mg/L Sample collected from submerged flow inside pipe. Detergent detected in sample. units Temperature 57 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in):4 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:841 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-3373 US1 City of Oshkosh o20250917134454.JPG Outfall Notes: Upstream manhole located approx 75 ft S of outfall 15-3373. Intermediate area consists of street right- of-way, residential lot and pond embankment. Location Map Supplemental - Alternate Location Discharge Location: Downstream Outfall Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:792,782 Northing:483,777 Longitude:-88.53886 Latitude:44.04663 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 15-3373 NR 216 Class: Inspection Date:9/17/2025 1:48:59 PM Inspector:JCW o20250917134502.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Sample ID:250917-58 Time Collected:13:46 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.52 Detergents:0.85 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Detergent and elevated ammonia in sample. units Temperature (field):76 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):3 Petrol. Sheen Suds Sewage Algae Other Brown ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):1 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:Slight Natural Suds/FoamNatural Sheen Conductivity (field):703 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 15-3373 US1 City of Oshkosh Inspection Date:9/3/2024 3:03:03 PM o20240903150120.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.2 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:753 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 3:57:06 PM o20230717143904.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Severe Total Chlorine:0 Free Chlorine:0 pH:7.16 Detergents:0.9 ppm ppm mg/L Sample collected from submerged pool in manhole. Detergent detected in sample. Next upstream curb inlet dry. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:464 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-594 City of Oshkosh o20250925110724.JPG Outfall Notes: Storm sewer from Oshkosh Ave discharges to river from west. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: CMP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:785,892 Northing:479,412 Longitude:-88.56505 Latitude:44.03464 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43461 Priority Outfall NR 216 Class: Inspection Date:9/25/2025 11:09:08 AM Inspector:JCW o20250925110728.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 16-594 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-594 City of Oshkosh Inspection Date:9/3/2024 1:35:36 PM o20240903133450.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-594 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 12:25:50 PM o20230717111032.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-594 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 2:52:00 PM o20220824144736.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-594 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 9:39:49 AM o20210817093900.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-594 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-594 City of Oshkosh Inspection Date:8/19/2020 9:04:07 AM o20200819090352.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-594 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 11:05:33 AM o20190918100438.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-594 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/24/2018 9:07:36 AM o20181024090620.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-594 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 11:24:35 AM o20171017112242.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-594 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-594 City of Oshkosh Inspection Date:10/10/2016 2:04:49 PM o20161010140356.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located -screened upstream at 16-594 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:8/19/2010 7:23:24 AM o20100819071708.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 16-594 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-594 US1 City of Oshkosh o20250925110832.JPG Outfall Notes: Upstream manhole located approx 60 ft WSW of outfall 16-594. Intermediate area consists of open space in park. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:785,844 Northing:479,383 Longitude:-88.56523 Latitude:44.03457 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 16-594 NR 216 Class: Inspection Date:9/25/2025 11:11:40 AM Inspector:JCW o20250925110840.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-86 Time Collected:11:09 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.16 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):75 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):58 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):389 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-594 US1 City of Oshkosh Inspection Date:9/3/2024 1:37:54 PM o20240903133620.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:Moderate Total Chlorine:0 Free Chlorine:0 pH:7.28 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):58 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Moderate Non-illicit:None Conductivity:87 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:7/17/2023 12:28:18 PM o20230717111202.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.69 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):57 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:256 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 2:53:00 PM o20220824144754.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.12 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 79 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:336 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 9:42:48 AM o20210817094028.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.66 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 79 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):59 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:205 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-594 US1 City of Oshkosh Inspection Date:8/19/2020 9:06:48 AM o20200819090422.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.9 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):57 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:339 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/18/2019 11:07:43 AM o20190918100526.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.27 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):56 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:367 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/24/2018 9:08:57 AM o20181024090720.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.35 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 50 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):57 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:456 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 11:27:30 AM o20171017112318.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:6.98 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 68 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):51 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:741 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-594 US1 City of Oshkosh Inspection Date:10/10/2016 2:07:20 PM o20161010140454.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:Easily detected Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.17 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):51 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.25 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:831 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:8/19/2010 7:26:35 AM o20100819071738.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.44 Detergents:0 ppm ppm mg/L 2 small oil drops, likely from Oshkosh Ave runoff. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):51 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-844 City of Oshkosh o20250925114304.JPG Outfall Notes: Storm sewer from Koeller St discharges to stream from south. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):18 Height/Depth (in): Width (in): Not Physically Located Easting:781,597 Northing:476,531 Longitude:-88.58137 Latitude:44.02673 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43946 Priority Outfall NR 216 Class: Inspection Date:9/25/2025 11:46:19 AM Inspector:JCW o20250925114308.JPG Previous Rainfall (hrs):72+ Flow Description:Trickle Odor:None Color:None Turbidity:None Floatables:Slight Sample ID:250925-37 Time Collected:11:44 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.49 Detergents:0 ppm ppm mg/L Notes:Sample collected from pipe flow. Elevated conductivity. Graffiti on both Koeller St bridge abutments. units Temperature (field):77 ° F Inspection Type:Ongoing Graffiti:Severe Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):2890 µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-844 City of Oshkosh Inspection Date:9/10/2024 7:37:15 AM o20240910073502.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Pipe wet, but no collectable flow at time of inspection. Gross solids in and around pipe. Graffiti on nearby bridge abutments. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/1/2023 11:33:46 AM o20230801103220.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.43 Detergents:0 ppm ppm mg/L Sample collected from pipe flow. Elevated conductivity. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:7200 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:9/16/2022 9:45:00 AM o20220916094346.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.99 Detergents:0 ppm ppm mg/L Sample collected from pipe flow. Elevated conductivity in sample. Tracked upstream without finding source. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:2310 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 8:47:50 AM o20210817084532.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.14 Detergents:0.65 ppm ppm mg/L Sample collected from pipe flow. Detergent detected in sample. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Severe Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:1990 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-844 City of Oshkosh Inspection Date:8/20/2020 7:55:43 AM o20200820075354.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Pipe wet, but no collectable flow at time of inspection. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 8:43:00 AM o20191105084324.JPG Previous Rainfall (hrs):48-72Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:0.8 ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 1:59:59 PM o20191008125814.JPG Previous Rainfall (hrs):48-72Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.09 Detergents:0.5 ppm ppm mg/L Sample collected from pipe flow. Detergent and elevated conductivity in sample. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:2640 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/26/2018 1:46:37 PM o20181025085152.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.19 Detergents:0.5 ppm ppm mg/L Detergent detection follow-up. Limited screening conducted beyond sampling. units Temperature 56 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:3550 µS/cm in. Condition Assessment Type:Repeat NotesInspector:KMK 2018 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-844 City of Oshkosh Inspection Date:10/25/2018 8:55:36 AM o20181025085152.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.22 Detergents:0.45 ppm ppm mg/L Sample collected from pipe flow. Detergent and elevated conductivity in sample. units Temperature 52 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:3300 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/17/2017 10:32:21 AM o20171017102814.JPG Previous Rainfall (hrs):48-72Flow:Trickle Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.35 Detergents:0 ppm ppm mg/L Sample collected from pipe flow. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:1704 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/18/2016 7:21:24 AM o20161018071712.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.29 Detergents:0 ppm ppm mg/L Elevated conductivity, but no other parameters out of range. units Temperature 64 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:3880 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/28/2015 7:20:55 AM o20150928062340.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Flowline wet, but no flow at time of inspection. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-844 City of Oshkosh Inspection Date:6/6/2012 11:50:55 AM o20120606105408.JPG Previous Rainfall (hrs):72+Flow:Trickle Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:8.1 Detergents:0 ppm ppm mg/L units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:5050 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-941 City of Oshkosh o20250917112126.JPG Outfall Notes: Storm sewer from Westhaven Dr discharges to Aurora detention basin, which ultimately discharges to STH 21 right-of-way. Location Map Minor Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:778,417 Northing:477,530 Longitude:-88.59346 Latitude:44.02946 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44221 Priority Outfall NR 216 Class: Inspection Date:9/17/2025 11:26:28 AM Inspector:JCW o20250917112234.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:Clearly visible in bottle Turbidity:None Floatables:None Sample ID:250917-18 Time Collected:11:23 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):9.20 Detergents:0 ppm ppm mg/L Notes:Outfall partially submerged. Traffic at upstream curb inlet - sampled from outfall pool. Grate in pond. Elevated pH in pond. units Temperature (field):83 ° F Inspection Type:Ongoing Graffiti:None Damage:Moderate Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):11 Petrol. Sheen Suds Sewage Algae Other Blue ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):470 µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-941 City of Oshkosh Inspection Date:8/22/2024 1:42:19 PM o20240822134128.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:Clearly visible in flow Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.05 Detergents:0 ppm ppm mg/L Upstream curb inlet (16-941 US1) wet, but no collectable flow at time of inspection. Sample collected from outfall pool. Blue pond dye. Elevated pH. units Temperature 79 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):15 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:265 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:10/3/2017 10:01:36 AM o20171003095924.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-941 US1. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:None Depth (in):14 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:6/6/2012 1:03:13 PM o20120606120050.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Grate detached from apron. Outfall partially submerged. Outfall screened upstream at 16-941 US1. units Temperature --° F Graffiti:None Damage:Minor Erosion:None Deposition:None Depth (in):6 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-995 City of Oshkosh o20250917121448.JPG Outfall Notes: Storm sewer from Patriot Ln discharges to swale/dry pond that ultimately discharges to wet pond to south. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: HDPE Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:779,838 Northing:476,251 Longitude:-88.58806 Latitude:44.02596 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43648 Priority Outfall NR 216 Class: Inspection Date:9/17/2025 12:18:41 PM Inspector:JCW o20250917121452.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall partially submerged - screened upstream at 16-995 US1. Pipe clear; root/berm immediately downstream blocking flow. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):16 Depth (in):10 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Severe Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-995 City of Oshkosh Inspection Date:8/22/2024 1:53:45 PM o20240822135154.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2" sediment in pipe, 12" root mass obstructing flow. Screened upstream at 16-995 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 2 Depth (in):11 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/1/2023 10:14:27 AM o20230801091314.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-995 US1. Pipe clear, 15" berm at end of apron creating dam. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 15 Depth (in):11 Vegetation:None Benthic Growth:Severe Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/23/2022 3:14:00 PM o20220823151212.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.46 Detergents:3.5 ppm ppm mg/L No flow leaving apron. Sample collected from apron pool. Detergent detected in sample. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):10 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:325 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 8:08:20 AM o20210817080534.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-995 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):10 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-995 City of Oshkosh Inspection Date:8/20/2020 8:35:17 AM o20200820083238.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 10 inch berm of roots blocking flow from apron. Outfall partially submerged - screened upstream at 16-995 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):8 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:10/8/2019 2:29:54 PM o20191008132854.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-995 US1. Detergent detected in sample. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):18 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/25/2018 8:27:19 AM o20181025082506.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-995 US1. Detergent detected in sample. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):12 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/3/2017 10:18:12 AM o20171003101614.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-995 US1. Detergent detected in sample. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in):8 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-995 City of Oshkosh Inspection Date:6/6/2012 1:21:40 PM o20120606122140.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L No flow leaving pool at end of outfall. Deposition in swale downstream. Screened upstream at 16-995 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 8 Depth (in):9 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-995 US1 City of Oshkosh o20250917121844.JPG Outfall Notes: Upstream manhole located approx 112 ft W of outfall 16-995. Intermediate area consists of open space. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:779,726 Northing:476,250 Longitude:-88.58848 Latitude:44.02596 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 16-995 NR 216 Class: Inspection Date:9/17/2025 12:24:40 PM Inspector:JCW o20250917121852.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250917-17 Time Collected:12:21 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.08 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):74 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):4 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):151 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-995 US1 City of Oshkosh Inspection Date:8/22/2024 1:58:13 PM o20240822135526.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.94 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):4 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:713 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/1/2023 10:24:09 AM o20230801092110.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.82 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:777 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/17/2021 8:13:37 AM o20210817080912.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.53 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:801 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Inspection Date:8/20/2020 8:38:07 AM o20200820083626.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Flowline damp, but no collectable flow at time of inspection. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-995 US1 City of Oshkosh Inspection Date:11/5/2019 3:00:59 PM o20191105145942.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:1.3 ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):8 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 2:32:34 PM o20191008133058.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.45 Detergents:1 ppm ppm mg/L Sample collected from submerged pool in outfall. Detergent detected in sample. units Temperature 65 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):9 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:731 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/26/2018 12:12:28 PM o20181025082910.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.02 Detergents:0.85 ppm ppm mg/L Detergent detection follow-up. Limited screening conducted beyond sampling. units Temperature 54 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:1143 µS/cm in. Condition Assessment Type:Repeat NotesInspector:KMK 2018 Inspection Date:10/25/2018 8:28:36 AM o20181025082910.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.86 Detergents:0.4 ppm ppm mg/L Sample collected from submerged pool in outfall. Detergent detected in sample. units Temperature 50 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:1011 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-995 US1 City of Oshkosh Inspection Date:10/17/2017 8:51:34 AM o20171017084622.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.54 Detergents:0.8 ppm ppm mg/L Repeat inspection due to detergent. Detergent detected in manhole sample. units Temperature 61 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):7 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:582 µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2017 Inspection Date:10/3/2017 10:22:53 AM o20171003101932.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.45 Detergents:1.3 ppm ppm mg/L Sample collected from submerged pool in outfall. Detergent detected in sample. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:333 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:6/6/2012 1:28:22 PM o20120606122856.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:Faint Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.36 Detergents:0 ppm ppm mg/L Sample collected from pool in manhole. No flow entering either pipe. units Temperature 69 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):1 Vegetation:None Benthic Growth:None Stains:Slight Ammonia:0 ppm Sampling Results Submerged:None Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:411 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 City of Oshkosh o20250925104554.JPG Outfall Notes: N Sawyer St storm sewer discharges to river from south. Outfall fully submerged and not physically located. GPS coordinates approximate. Pipe info from MS4 map. (Formerly 16-533.) Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:785,380 Northing:478,813 Longitude:-88.56699 Latitude:44.03300 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43507 Priority Outfall NR 216 Class: Inspection Date:9/25/2025 10:54:18 AM Inspector:JCW o20250925104602.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at 16-1178 US1. Gross solids in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 City of Oshkosh Inspection Date:9/19/2024 10:20:44 AM o20240919101058.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-1178 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/9/2023 10:46:36 AM o20230809093408.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-1178 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 2:29:00 PM o20220824142120.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-1178 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/31/2021 11:09:30 AM o20210831110724.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1178 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 City of Oshkosh Inspection Date:9/24/2020 9:53:07 AM o20200924095628.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-533 US1. Floating gross solids (litter) in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:QAL 2020 Inspection Date:11/5/2019 9:36:00 AM o20191105093616.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-533 US1. Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 1:37:40 PM o20191008123600.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-533 US1. Floating gross solids (litter) and detergent in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/24/2018 8:46:55 AM o20181024084514.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-533 US1. Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 City of Oshkosh Inspection Date:10/19/2017 1:28:21 PM o20171019132622.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-533 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/18/2016 9:28:25 AM o20161018092038.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-533 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 10:32:22 AM o20150923093118.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened at 16- 533 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/7/2014 9:08:49 AM o20141007080736.JPG Previous Rainfall (hrs):48-72Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not located - screened upstream at 16-533 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 City of Oshkosh Inspection Date:10/11/2011 12:16:32 PM o20111011121620.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L 2010 screening follow-up. Outfall fully submerged and not physically located. Outfall screened upstream at 16-533 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:8/26/2010 10:11:27 AM o20100826094912.JPG Previous Rainfall (hrs):72+Flow:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged and not physically located. Outfall screened upstream at 16-533 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Outfall Not Located Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 US1 City of Oshkosh o20250925105058.JPG Outfall Notes: Upstream manhole located approx 75 ft NE of outfall 16-1178 (formerly 16-533). Intermediate area consists of street right-of-way and commercial property. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:785,329 Northing:478,752 Longitude:-88.56719 Latitude:44.03283 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 16-1178 NR 216 Class: Inspection Date:9/25/2025 10:55:03 AM Inspector:JCW o20250925105110.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-20 Time Collected:10:52 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.75 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature (field):74 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):35 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):472 µS/cm 2025 Page 1 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 US1 City of Oshkosh Inspection Date:9/19/2024 10:21:29 AM o20240919101514.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:8.29 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 75 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):35 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:417 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/9/2023 10:47:22 AM o20230809094116.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.72 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) and trace ammonia in manhole. units Temperature 80 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):37 Vegetation:None Benthic Growth:None Stains:None Ammonia:0.5 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:456 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/24/2022 2:30:00 PM o20220824142446.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.64 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 81 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:354 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/31/2021 11:17:57 AM o20210831111218.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.29 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:389 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 US1 City of Oshkosh Inspection Date:9/24/2020 10:01:33 AM o20200924100816.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.8 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 68 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):33 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:433 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:QAL 2020 Inspection Date:11/5/2019 9:37:43 AM o20191105093642.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:0 ppm ppm mg/L Follow-up inspection for sampling - limited screening conducted. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 1:38:32 PM o20191008123830.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.34 Detergents:0.5 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. Detergent detected in sample. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):38 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:449 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/24/2018 8:51:52 AM o20181024084850.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.75 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. Floating gross solids (litter) in manhole. units Temperature 48 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):46 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:485 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Page 3 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 US1 City of Oshkosh Inspection Date:10/19/2017 1:34:48 PM o20171019133054.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:Slight Total Chlorine:0 Free Chlorine:0 pH:7.89 Detergents:0 ppm ppm mg/L Sample collected from submerged pool in manhole. units Temperature 66 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:668 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/18/2016 9:29:17 AM o20161018092516.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.94 Detergents:0 ppm ppm mg/L Potential illicit discharge due to gross solids. units Temperature 63 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):40 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:482 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/23/2015 10:32:59 AM o20150923093204.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.95 Detergents:0 ppm ppm mg/L Floating gross solids (litter) - including syringe - in manhole. units Temperature 71 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):36 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:363 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/7/2014 9:13:45 AM o20141007081140.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.67 Detergents:0 ppm ppm mg/L Floating gross solids (litter) in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):34 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:474 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Page 4 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1178 US1 City of Oshkosh Inspection Date:10/11/2011 12:22:21 PM o20111011121924.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.9 Detergents:-- ppm ppm mg/L 2010 screening follow-up. Floatable debris significantly reduced. units Temperature 70 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):16 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2011 Inspection Date:5/26/2011 2:35:00 PM o20110526143524.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor: Color: Turbidity: Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Limited screening conducted to check for floatable debris. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in): Vegetation: Benthic Growth: Stains: Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Other NotesInspector:JCW 2011 Inspection Date:8/26/2010 10:01:38 AM o20100826095640.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:Faint in bottle Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.23 Detergents:0 ppm ppm mg/L Floatable debris in manhole. units Temperature 76 ° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):36 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:0 ppm Sampling Results Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2010 Page 5 of 5Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1205 City of Oshkosh o20250917113944.JPG Outfall Notes: Curb inlet from Washburn St discharges to northeast corner of detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):15 Height/Depth (in): Width (in): Not Physically Located Easting:779,975 Northing:478,341 Longitude:-88.58754 Latitude:44.03169 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43396 Priority Outfall NR 216 Class: Inspection Date:9/17/2025 11:43:20 AM Inspector:JCW o20250917113950.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250917-30 Time Collected:11:40 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.79 Detergents:0 ppm ppm mg/L Notes:Upstream curb inlet not screened due to traffic - no flow leaving curb inlet. Sample from outfall pool due to prior illicit discharges. units Temperature (field):80 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):2 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:Slight Natural Suds/FoamNatural Sheen Conductivity (field):1240 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1205 City of Oshkosh Inspection Date:8/22/2024 12:56:40 PM o20240822125502.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.06 Detergents:0 ppm ppm mg/L No water leaving upstream curb inlet (16-1205 US1) - sample collected from submerged pool at end of pipe. Slightly elevated pH. units Temperature 78 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:None Conductivity:626 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:8/1/2023 9:49:51 AM o20230801084810.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.95 Detergents:0 ppm ppm mg/L Outfall partially submerged. No water entering pipe in upstream curb inlet. Pond sample collected due to prior detergent detections. units Temperature 74 ° F Graffiti:None Damage:None Erosion:None Deposition:Minor 2 Depth (in):5 Vegetation:None Benthic Growth:Severe Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:607 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2023 Inspection Date:8/23/2022 3:25:00 PM o20220823152424.JPG Previous Rainfall (hrs):72+Flow:Submerged, no flow Odor:Easily detected Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:8.55 Detergents:2.5 ppm ppm mg/L No flow escaping upstream curb inlet. Sample collected from outfall pool. Deteregent in pond, possibly from car wash. units Temperature 82 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:Severe Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:Slight Conductivity:835 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:EJK 2022 Inspection Date:8/17/2021 7:41:43 AM o20210817073912.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:7.4 Detergents:0.6 ppm ppm mg/L Outfall partially submerged. Traffic prevented screening of upstream inlet. Pond sample from end of pipe had detergent and elevated conductivity. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Non-illicit:Slight Conductivity:2580 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2021 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1205 City of Oshkosh Inspection Date:8/20/2020 8:54:14 AM o20200820085150.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Sediment wet, but no flow at time of inspection. No flow entering pipe at upstream curb inlet. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in): Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:10/8/2019 2:11:11 PM o20191008130940.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1205 US1. Detergent detected in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 2 Depth (in):5 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/25/2018 8:41:00 AM o20181025083538.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1205 US1. Detergent detected in upstream manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 2 Depth (in):5 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Inspection Date:10/3/2017 9:04:39 AM o20171003090114.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1205 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Minor 1 Depth (in):1 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1205 City of Oshkosh Inspection Date:10/18/2016 7:06:22 AM o20161018070408.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1205 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):2 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/28/2015 6:36:00 AM o20150928053734.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened at 16-1205 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:6/21/2012 12:32:35 PM o20120621113440.JPG Previous Rainfall (hrs):0-24Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall fully submerged; screened upstream at 16-1205 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):21 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1508 City of Oshkosh o20250925115412.JPG Outfall Notes: Westfield St storm sewer discharges to stream from south. Replaces outfall 16-487 (2011). Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):44 Width (in):72 Not Physically Located Easting:782,768 Northing:477,159 Longitude:-88.57692 Latitude:44.02846 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43539 Non-Priority Major Outfall NR 216 Class: Inspection Date:9/25/2025 11:57:02 AM Inspector:JCW o20250925115422.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, significant flow Odor:None Color:None Turbidity:None Floatables:None Sample ID:250925-27 Time Collected:11:55 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.36 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged flow inside pipe. units Temperature (field):75 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):18 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):893 µS/cm 2025 Page 1 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1508 City of Oshkosh Inspection Date:8/20/2020 7:37:18 AM o20200820073502.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1508 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):18 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:11/5/2019 8:20:00 AM o20191105082100.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall screened upstream at 16-1508 US1. Detergent and ammonia in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):25 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2019 Inspection Date:10/8/2019 1:50:30 PM o20191008124948.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall screened upstream at 16-1508 US1. Detergent and ammonia in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):25 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2019 Inspection Date:10/25/2018 9:02:26 AM o20181025090016.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1508 US1. Detergent and ammonia in manhole. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):29 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2018 Page 2 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1508 City of Oshkosh Inspection Date:10/17/2017 10:50:15 AM o20171017104638.JPG Previous Rainfall (hrs):48-72Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1508 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):26 Vegetation:None Benthic Growth:Moderate Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2017 Inspection Date:10/18/2016 7:30:34 AM o20161018072836.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Graffiti on south bridge abutment. Outfall partially submerged - screened upstream at 16-1508 US1. units Temperature --° F Graffiti:Moderate Damage:None Erosion:None Deposition:None Depth (in):21 Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2016 Inspection Date:9/28/2015 6:56:23 AM o20150928055850.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened at 16-1508 US1. Elevated ammonia. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):27 Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:10/7/2014 10:55:47 AM o20141007095432.JPG Previous Rainfall (hrs):48-72Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged - screened upstream at 16-1508 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):23 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2014 Page 3 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1508 City of Oshkosh Inspection Date:9/5/2013 12:32:55 PM o20130905113702.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Significant duckweed. Outfall partially submerged. Outfall screened upstream at 16-1508 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):28 Vegetation:None Benthic Growth:Moderate Stains:Moderate Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Moderate Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/27/2012 12:57:15 PM o20120927115922.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Construction around outfall. Screened upstream at 16- 1508 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 9 Depth (in):15 Vegetation:None Benthic Growth:Slight Stains:Slight Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Repeat NotesInspector:JCW 2012 Inspection Date:5/30/2012 1:02:54 PM o20120530120256.JPG Previous Rainfall (hrs):72+Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged. Outfall screened upstream at 16-1508 US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):33 Vegetation:None Benthic Growth:None Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:Slight Non-illicit:Slight Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 4 of 4Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1628 City of Oshkosh o20250917113550.JPG Outfall Notes: Curb inlets from Washburn St discharge to riprap swale from east. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):15 Height/Depth (in): Width (in): Not Physically Located Easting:779,963 Northing:478,418 Longitude:-88.58759 Latitude:44.03190 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43568 Priority Outfall NR 216 Class: Inspection Date:9/17/2025 11:39:25 AM Inspector:JCW o20250917113604.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Sediment in pipe and apron wet, but no collectable flow. No flow leaving upstream curb inlet. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):1 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services 16-1628 City of Oshkosh Inspection Date:8/22/2024 12:41:52 PM o20240822124018.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L End of pipe and upstream curb inlet wet, but no collectable flow at time of inspection. Gross solids (litter) inside pipe. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:Moderate 3 Depth (in): Vegetation:None Benthic Growth:None Stains:Moderate Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Potential Gross Solids:Moderate Non-illicit:Moderate Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2024 Inspection Date:6/21/2012 12:41:46 PM o20120621114444.JPG Previous Rainfall (hrs):0-24Flow:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Outfall partially submerged; screened upstream at 16- 1204a US1. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:Slight Stains:None Ammonia:--ppm Sampling Results Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2012 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services FernauPond City of Oshkosh o20250925094830.JPG Outfall Notes: Detention basin discharges to stream from north via riprap channel. Location Map Major Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: PVC Diameter (in):18 Height/Depth (in): Width (in): Not Physically Located Easting:788,540 Northing:487,296 Longitude:-88.55500 Latitude:44.05628 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43388 Non-Priority Major Outfall NR 216 Class: Inspection Date:9/25/2025 9:50:27 AM Inspector:JCW o20250925094834.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. Corrosion on metal apron. Rust stains on PVC pipe. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:Minor Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services FernauPond City of Oshkosh Inspection Date:8/19/2020 7:44:03 AM o20200819074124.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.25 Detergents:0 ppm ppm mg/L Sample collected from concentrated flow immediately downstream of outfall. Elevated pH seemed widespread in open water. units Temperature 73 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):4 Vegetation:None Benthic Growth:Moderate Stains:Slight Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:450 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2020 Inspection Date:9/23/2015 12:40:27 PM o20150923114318.JPG Previous Rainfall (hrs):72+Flow:None Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L Pipe flowline dry at time of inspection. units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in): Vegetation:None Benthic Growth:None Stains:Moderate Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2015 Inspection Date:7/2/2013 7:12:18 AM o20130702061552.JPG Previous Rainfall (hrs):72+Flow:Submerged, slight flow Odor:None Color:None Turbidity:None Floatables:None Total Chlorine:0 Free Chlorine:0 pH:9.2 Detergents:0 ppm ppm mg/L Sample collected from submerged flow. units Temperature 72 ° F Graffiti:None Damage:None Erosion:None Deposition:None Depth (in):3 Vegetation:None Benthic Growth:None Stains:None Ammonia:0 ppm Sampling Results Submerged:Partially Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Non-illicit:None Conductivity:449 µS/cm in. Condition Assessment Type:Ongoing NotesInspector:JCW 2013 Inspection Date:9/2/2009 Osh09_DSCN6298.JPG Previous Rainfall (hrs):72+Flow:None Odor: Color: Turbidity: Floatables: Total Chlorine:-- Free Chlorine:-- pH:-- Detergents:-- ppm ppm mg/L units Temperature --° F Graffiti:None Damage:None Erosion:None Deposition:None 0 Depth (in):0 Vegetation: Benthic Growth:Slight Stains: Ammonia:--ppm Sampling Results Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids: Non-illicit:None Conductivity:--µS/cm in. Condition Assessment Type:Initial NotesInspector:JCW 2009 Page 2 of 2Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43347 City of Oshkosh o20250807083248.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge west of road. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:781,810 Northing:492,497 Longitude:-88.58062 Latitude:44.07053 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43347 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 8:34:49 AM Inspector:JCW o20250807083252.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe sediment wet, but no collectable flow at time of inspection. Scour hole at end of pipe level with pipe crown. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):6 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43361 City of Oshkosh o20250925084802.JPG Outfall Notes: Curb inlets from Lake Butte des Morts Dr discharge to wetland area to west. Location Map Minor Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:782,805 Northing:489,368 Longitude:-88.57682 Latitude:44.06195 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43361 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/25/2025 8:50:15 AM Inspector:JCW o20250925084808.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43406 City of Oshkosh o20250917091156.JPG Outfall Notes: Curb inlets from Gibson Ct discharge to NE corner of dry pond. Location Map Supplemental Outfall Discharge Location: Non-MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: HDPE Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:794,534 Northing:461,911 Longitude:-88.53216 Latitude:43.98665 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43406 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 9:14:59 AM Inspector:JCW o20250917091200.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe and apron wet, but no collectable flow. Pipe clean, 2" sediment on apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):2 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43443 City of Oshkosh o20250917092644.JPG Outfall Notes: Storm sewer from Gibson Ct discharges to north end of dry pond. Location Map Supplemental Outfall Discharge Location: Non-MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: HDPE Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:794,894 Northing:461,756 Longitude:-88.53080 Latitude:43.98623 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43443 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 9:30:02 AM Inspector:JCW o20250917092648.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe and apron sediment wet, but no collectable flow. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):1 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43456 City of Oshkosh o20250925074744.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge west of road. Location Map Minor Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:782,017 Northing:492,172 Longitude:-88.57983 Latitude:44.06964 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43456 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/25/2025 7:48:25 AM Inspector:JCW o20250925074748.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43484 City of Oshkosh o20250807094458.JPG Outfall Notes: Storm sewer from Pauls Pl discharge to NE corner of detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:771,761 Northing:471,697 Longitude:-88.61874 Latitude:44.01344 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43484 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 9:49:12 AM Inspector:JCW o20250807094502.JPG Previous Rainfall (hrs):72+ Flow Description:Trickle Odor:None Color:None Turbidity:None Floatables:Severe Sample ID:250807-85 Time Collected:09:47 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.64 Detergents:0 ppm ppm mg/L Notes:Sample collected from trickle flow from pipe. Algae from pond deposited on apron. units Temperature (field):78 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):989 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43543 City of Oshkosh o20250925090122.JPG Outfall Notes: Curb inlets from Lake Butte des Morts Dr discharge to wetland area to west. Location Map Minor Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:782,763 Northing:489,135 Longitude:-88.57698 Latitude:44.06131 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43543 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/25/2025 9:03:17 AM Inspector:JCW o20250925090126.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Sediment in pipe wet, but no collectable flow. 1" sediment in pipe, 8" berm at end of apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):1 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43603 City of Oshkosh o20250917124554.JPG Outfall Notes: Curb inlets on CTH Y median discharge to north ditch. Location Map Minor Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:791,284 Northing:497,046 Longitude:-88.54458 Latitude:44.08303 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43603 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 12:47:54 PM Inspector:JCW o20250917124558.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):6 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43616 City of Oshkosh o20250807080012.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge west of road. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:781,406 Northing:492,988 Longitude:-88.58216 Latitude:44.07187 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43616 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 8:04:03 AM Inspector:JCW o20250807080018.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe sediment dry. Scour hole at end of pipe level with pipe crown. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Severe Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):7 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43660 City of Oshkosh o20250917091416.JPG Outfall Notes: Curb inlets from Gibson Ct discharge to SE corner of dry pond. Location Map Supplemental Outfall Discharge Location: Non-MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: HDPE Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:794,575 Northing:461,860 Longitude:-88.53201 Latitude:43.98651 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43660 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 9:17:20 AM Inspector:JCW o20250917091422.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe wet, but no collectable flow. 1/2" sediment in pipe, riprap on apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):0.5 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43661 City of Oshkosh o20250925081614.JPG Outfall Notes: Storm sewer from Lake Butte des Morte Dr discharges to wetland area to west of road. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:782,399 Northing:491,158 Longitude:-88.57837 Latitude:44.06686 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43661 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/25/2025 8:18:28 AM Inspector:JCW o20250925081620.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Sediment in pipe and apron wet, but no collectable flow. Cattails on apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):2 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43698 City of Oshkosh o20250807100308.JPG Outfall Notes: Storm sewer from Pauls Pl discharges detention basin on south side of road. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):24 Height/Depth (in): Width (in): Not Physically Located Easting:771,298 Northing:471,792 Longitude:-88.62050 Latitude:44.01370 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43698 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 10:05:55 AM Inspector:JCW o20250807100322.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:Severe Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe and apron wet, but no collectable flow at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43703 City of Oshkosh o20250917090346.JPG Outfall Notes: Storm sewer from Gibson Ct discharges to NW corner of dry pond. Location Map Supplemental Outfall Discharge Location: Non-MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: HDPE Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:794,291 Northing:461,860 Longitude:-88.53309 Latitude:43.98651 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43703 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 9:04:44 AM Inspector:JCW o20250917090350.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. Pipe clean, 7" deposition on apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):7 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43708 City of Oshkosh o20250917094934.JPG Outfall Notes: Storm sewer discharges to channel from south. Returns to pipe at South Park Ave. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: CMP Diameter (in):36 Height/Depth (in): Width (in): Not Physically Located Easting:785,706 Northing:467,248 Longitude:-88.56572 Latitude:44.00128 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43708 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 9:54:38 AM Inspector:JCW o20250917094958.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250917-81 Time Collected:09:52 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.91 Detergents:0 ppm ppm mg/L Notes:Discharge from concrete vault - pipe not observed. Sample from outfall pool. units Temperature (field):75 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):12 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):1328 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43713 City of Oshkosh o20250917092000.JPG Outfall Notes: Curb inlets from Gibson Ct discharge to south end of dry pond. Location Map Supplemental Outfall Discharge Location: Non-MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: HDPE Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:794,795 Northing:462,088 Longitude:-88.53117 Latitude:43.98714 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43713 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 9:23:14 AM Inspector:JCW o20250917092008.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, no flow Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:End of pipe slightly submerged. Upstream curb inlet dry - no sample collected. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):0.5 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43800 City of Oshkosh o20250807103954.JPG Outfall Notes: Curb inlets from Wyldwood Dr discharge to east side of detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: PVC Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:776,516 Northing:473,639 Longitude:-88.60067 Latitude:44.01878 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43800 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 10:41:37 AM Inspector:JCW o20250807104000.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43808 City of Oshkosh o20250917140130.JPG Outfall Notes: South detention basin discharges to south side of north detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):60 Height/Depth (in): Width (in): Not Physically Located Easting:792,441 Northing:484,351 Longitude:-88.54016 Latitude:44.04820 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43808 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 2:05:25 PM Inspector:JCW o20250917140156.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:Slight cloudiness Floatables:None Sample ID:250917-31 Time Collected:14:02 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.91 Detergents:0 ppm ppm mg/L Notes:No upstream screening location (pond to pond) - sample from outfall pool. units Temperature (field):82 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):15 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:Severe Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):768 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43822 City of Oshkosh o20250805110508.JPG Outfall Notes: Storm sewer from river walk discharges to river from south. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:790,911 Northing:472,044 Longitude:-88.54595 Latitude:44.01444 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-43822 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 11:09:02 AM Inspector:JCW o20250805110514.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged - screened upstream at U-43822 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):30 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43822 US1 City of Oshkosh o20250805110836.JPG Outfall Notes: Upstream catchbasin located approximately 52 ft S of outfall U-43822. Intermediate area consists of riverwalk and shoreline. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:790,917 Northing:471,990 Longitude:-88.54593 Latitude:44.01430 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 09-792 NR 216 Class: Inspection Date:8/5/2025 11:11:47 AM Inspector:JCW o20250805110844.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Filter bag installed inside catchbasin for adjacent construction - no sample collected. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43837 City of Oshkosh o20250917143826.JPG Outfall Notes: Curb inlets from Algoma Blvd discharge to SW corner of detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):15 Height/Depth (in): Width (in): Not Physically Located Easting:783,932 Northing:487,798 Longitude:-88.57253 Latitude:44.05764 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43837 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 2:41:35 PM Inspector:JCW o20250917143834.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. 2" sediment on apron, pipe clear. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):2 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43845 City of Oshkosh o20250925092438.JPG Outfall Notes: Storm sewer from detention basin discharges to south ditch of Snell Rd. Ultimately discharges to outfall 12-2581 (U-44217). Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):15 Height/Depth (in): Width (in): Not Physically Located Easting:783,382 Northing:491,579 Longitude:-88.57463 Latitude:44.06801 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43845 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/25/2025 9:27:25 AM Inspector:JCW o20250925092450.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, no flow Odor:None Color:None Turbidity:None Floatables:Moderate Sample ID:250925-98 Time Collected:09:25 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.84 Detergents:0 ppm ppm mg/L Notes:No flow leaving apron. Sample from pool inside pipe. units Temperature (field):72 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):5 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):414 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43858 City of Oshkosh o20250807075242.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge west of road. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:781,242 Northing:493,176 Longitude:-88.58278 Latitude:44.07239 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43858 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 7:55:07 AM Inspector:JCW o20250807075246.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall pipe fully buried, with cattails. Junk tire next to pipe. Unable to screen outfall. Upstream catchbasin dry. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Severe Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):12 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43887 City of Oshkosh o20250805104350.JPG Outfall Notes: Storm sewer from river walk discharges to river from south. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:790,616 Northing:472,141 Longitude:-88.54707 Latitude:44.01471 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43887 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 10:47:39 AM Inspector:JCW o20250805104354.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged - screened upstream at U-43887 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):30 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43887 US1 City of Oshkosh o20250805104642.JPG Outfall Notes: Upstream catchbasin located approximately 31 ft SSW from outfall U-43887. Intermediate area consists of riverwallk and shoreline. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:790,604 Northing:472,113 Longitude:-88.54712 Latitude:44.01463 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 09-794 NR 216 Class: Inspection Date:8/5/2025 10:50:54 AM Inspector:JCW o20250805104648.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-63 Time Collected:10:47 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.79 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):82 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):26 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):368 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43942 City of Oshkosh Outfall Notes: Culvert from north swale of Shadow Ln / Miller Ln discharges to lake from north. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: CMP Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:796,371 Northing:488,612 Longitude:-88.52522 Latitude:44.05990 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: N/A Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 1:10:00 PM Inspector:JCW Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall not screened due to construction activity onsite. Screened upstream at U- 43942 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:Slight Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43942 US1 City of Oshkosh o20250917130322.JPG Outfall Notes: Upstream manhole located approx 209 ft NW of outfall U-43942. Intermeidate area consists of street right-of-way and residential property along waterfront. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:796,183 Northing:488,704 Longitude:-88.52593 Latitude:44.06015 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-102965 NR 216 Class: Inspection Date:9/17/2025 1:10:19 PM Inspector:JCW o20250917130328.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250917-74 Time Collected:13:05 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):7.74 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):81 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):7 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):935 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43975 City of Oshkosh o20250917084836.JPG Outfall Notes: Curb inlets from W Ripple Ave discharge to swale from south. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Elliptical Material: RCP Diameter (in): Height/Depth (in):24 Width (in):38 Not Physically Located Easting:790,635 Northing:454,507 Longitude:-88.54696 Latitude:43.96634 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43975 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 8:50:39 AM Inspector:JCW o20250917084848.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):2 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-43982 City of Oshkosh o20250807081246.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge west of road.Black/white marker post. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:781,586 Northing:492,777 Longitude:-88.58147 Latitude:44.07130 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-43982 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 8:17:28 AM Inspector:JCW o20250807081458.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Scour hole at end of pipe level with pipe crown. Swarming bees at end of pipe prevented screening. Upstream curb inlet dry. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):4 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44005 City of Oshkosh o20250805103230.JPG Outfall Notes: Storm sewer from river walk discharges to river from south. Riprap cover located, but actual pipe not observed. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:790,477 Northing:472,226 Longitude:-88.54760 Latitude:44.01494 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-44005 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 10:36:07 AM Inspector:JCW o20250805103232.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at U-44005 US1. Riprap cover located. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44005 US1 City of Oshkosh o20250805103514.JPG Outfall Notes: Upstream catchbasin located approximately 51 feet SSW of outfall U-44005. Intermediate area consists of riverwalk and shoreline. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:790,452 Northing:472,182 Longitude:-88.54770 Latitude:44.01482 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 09-795 NR 216 Class: Inspection Date:8/5/2025 10:39:37 AM Inspector:JCW o20250805103520.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-49 Time Collected:10:36 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.52 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):82 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):36 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):388 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44011 City of Oshkosh o20250917100802.JPG Outfall Notes: South Park pond. Pipe likely discharge from upper pond (south) to downstream channel, bypassing weir at lower flows. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: PVC Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:789,059 Northing:469,605 Longitude:-88.55298 Latitude:44.00775 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44011 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 10:12:04 AM Inspector:JCW o20250917100816.JPG Previous Rainfall (hrs):72+ Flow Description:Substantial Odor:None Color:None Turbidity:None Floatables:None Sample ID:250917-95 Time Collected:10:10 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.08 Detergents:0 ppm ppm mg/L Notes:Sample collected from pipe flow. Pipe flowing full. units Temperature (field):77 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location:Flow Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):1275 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44026 City of Oshkosh o20250805154554_1.JPG Outfall Notes: Storm sewer from river walk discharges to river from south. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:791,760 Northing:471,908 Longitude:-88.54272 Latitude:44.01407 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44026 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 3:49:18 PM Inspector:JCW o20250805154554_2.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged. Filter fabric on upstream catchbasin - no sample collected. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44053 City of Oshkosh o20250925080412.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge west of road. Location Map Minor Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):15 Height/Depth (in): Width (in): Not Physically Located Easting:782,341 Northing:491,471 Longitude:-88.57860 Latitude:44.06771 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44053 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/25/2025 8:07:08 AM Inspector:JCW o20250925080420.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44062 City of Oshkosh o20250917090654.JPG Outfall Notes: Storm sewer from Gibson Ct discharges to north end of dry pond. Location Map Supplemental Outfall Discharge Location: Non-MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: PVC Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:794,344 Northing:461,864 Longitude:-88.53289 Latitude:43.98652 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44062 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 9:09:54 AM Inspector:JCW o20250917090658.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe and apron sediment wet, but no flow at time of inspection. 1" sediment in pipe, 12" sediment end of apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):1 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44085 City of Oshkosh o20250807072400.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge to wetland south of road. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:780,346 Northing:493,826 Longitude:-88.58619 Latitude:44.07417 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44085 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 7:26:00 AM Inspector:JCW o20250807072406.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe sediment dry. Scour hole at end of pipe level with pipe crown. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):5 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44101 City of Oshkosh o20250807100830.JPG Outfall Notes: Outlet from detention basin north of Pauls Pl discharges to north. Location Map Minor Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):18 Height/Depth (in): Width (in): Not Physically Located Easting:771,336 Northing:471,988 Longitude:-88.62036 Latitude:44.01423 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44101 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 10:10:34 AM Inspector:JCW o20250807100838.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outlet pipe dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Slight Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44109 City of Oshkosh o20250917093228.JPG Outfall Notes: Curb inlets from Beachcomber St discharge to east end of dry pond. Location Map Supplemental Outfall Discharge Location: Non-MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: HDPE Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:794,631 Northing:461,594 Longitude:-88.53180 Latitude:43.98578 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44109 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 9:33:48 AM Inspector:JCW o20250917093238.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. Riprap on apron. Piled branches obstructing. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44117 City of Oshkosh o20250807074126.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge west of road. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:780,987 Northing:493,472 Longitude:-88.58375 Latitude:44.07320 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44117 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 7:43:40 AM Inspector:JCW o20250807074130.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe sediment dry. Scour hole at end of pipe level with pipe crown. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):5 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44119 City of Oshkosh o20250807073136.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge to wetland south of road. Location Map Supplemental Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:780,702 Northing:493,714 Longitude:-88.58484 Latitude:44.07386 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44119 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/7/2025 7:34:11 AM Inspector:JCW o20250807073144.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe sediment dry. Scour hole at end of pipe level with pipe crown. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):5 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44131 City of Oshkosh o20250805105230.JPG Outfall Notes: Storm sewer from river walk discharges to river from west. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):30 Height/Depth (in): Width (in): Not Physically Located Easting:790,645 Northing:471,958 Longitude:-88.54696 Latitude:44.01421 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: U-44131 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 10:56:17 AM Inspector:JCW o20250805105236.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged (not located) Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged and not located - screened upstream at U-44131 US1. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Outfall Not Located Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44131 US1 City of Oshkosh o20250805105258.JPG Outfall Notes: Upstream catchbasin located approximately 27 ft W of outfall U-44131. Intermediate area consists of riverwalk and shoreline. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Inlet/Catchbasin Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:790,618 Northing:471,964 Longitude:-88.54706 Latitude:44.01422 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: 09-793 NR 216 Class: Inspection Date:8/5/2025 10:58:18 AM Inspector:JCW o20250805105302.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-55 Time Collected:10:54 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):8.09 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. units Temperature (field):82 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):41 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location:Pool Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):790 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44142 City of Oshkosh o20250925075516.JPG Outfall Notes: Curb inlets on Lake Butte des Morts Dr discharge west of road. Location Map Minor Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:782,195 Northing:491,829 Longitude:-88.57915 Latitude:44.06870 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44142 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/25/2025 7:57:31 AM Inspector:JCW o20250925075522.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Sediment in pipe wet, but no collectable flow at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):5 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44156 City of Oshkosh o20250917144324.JPG Outfall Notes: Curb inlets from Algoma Blvd discharge to south end of detention basin via riprap swale. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):15 Height/Depth (in): Width (in): Not Physically Located Easting:783,974 Northing:487,662 Longitude:-88.57237 Latitude:44.05727 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44156 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 2:46:36 PM Inspector:JCW o20250917144330.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Sediment inside pipe dry. Garbage trapped by grate. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):2 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Slight Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:Slight Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44189 City of Oshkosh o20250917133140.JPG Outfall Notes: Curb inlets from N Main St discharge to SE corner of detention basin. Location Map Supplemental Outfall Discharge Location: MS4 Stormwater Facility Structure Type: Pond Inlet Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:792,998 Northing:484,385 Longitude:-88.53804 Latitude:44.04830 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44189 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/17/2025 1:34:35 PM Inspector:JCW o20250917133146.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. Dark stain on apron flowline. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:Severe Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-44238 City of Oshkosh o20250925083422.JPG Outfall Notes: Curb inlets from Lake Butte des Morts Dr discharge to wetland area to west. Location Map Minor Outfall Discharge Location: Downstream Outfall Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:782,763 Northing:489,642 Longitude:-88.57698 Latitude:44.06270 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-44238 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:9/25/2025 8:41:29 AM Inspector:JCW o20250925083432.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Sediment in pipe wet, but no collectable flow. 3" sediment in pipe, 12" berm at end of apron. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Moderate Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):3 Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-110530 City of Oshkosh o20250805145158.JPG Outfall Notes: Storm sewer from river walk and upstream area discharges to river from south. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):96 Height/Depth (in): Width (in): Not Physically Located Easting:793,893 Northing:470,802 Longitude:-88.53461 Latitude:44.01104 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-110530 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 2:55:13 PM Inspector:JCW o20250805145204.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged - screened upstream at U-110530 US1. Slightly elevated pH in upstream manhole. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:Minor Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in):6 Depth (in):64 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:Moderate Green Brown Stains:Moderate Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location: Illicit Discharge Potential:Potential Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-110530 US1 City of Oshkosh o20250805145418.JPG Outfall Notes: Upstream manhole located approx 72 ft SW of outfall U-110530. Intermediate area consists of street right-of-way and shoreline. Location Map Minor Outfall - Alternate Location Discharge Location: Downstream Outfall Structure Type: Manhole Shape: Manhole/Catchbasin Material: Manhole - concrete Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:793,849 Northing:470,746 Longitude:-88.53478 Latitude:44.01089 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-101169 NR 216 Class: Inspection Date:8/5/2025 3:00:05 PM Inspector:JCW o20250805145424.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID:250805-39 Time Collected:14:55 Total Chlorine (field):0 Free Chlorine (field):0 pH (field):9.08 Detergents:0 ppm ppm mg/L Notes:Sample collected from submerged pool in manhole. Slightly elevated pH in sample, likely from algae bloom in river. units Temperature (field):83 ° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in):73 Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):0 ppm Sampling Results Physical Condition Assessment Submerged:Partially Sample Location:Pool Illicit Discharge Potential:Potential Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):357 µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-110619 City of Oshkosh o20250805122942.JPG Outfall Notes: East ditch of Bradley St discharges to stream from south. Screened at culvert. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):15 Height/Depth (in): Width (in): Not Physically Located Easting:792,811 Northing:461,152 Longitude:-88.53871 Latitude:43.98457 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-110619 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 12:32:18 PM Inspector:JCW o20250805122946.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Pipe dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-110619w City of Oshkosh o20250805122610.JPG Outfall Notes: West ditch of Bradley St discharges to stream from south. Inaccessible due to security fence. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Open Channel Outfall Shape: Channel - Other Material: Channel - riprap Diameter (in): Height/Depth (in): Width (in): Not Physically Located Easting:792,757 Northing:461,137 Longitude:-88.53891 Latitude:43.98453 County Coordinates:Latitude/Longitude:Mapping Precison: Desktop mapping estimate Dimensions City ID: N/A Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 12:29:22 PM Inspector:JCW o20250805122620.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Screened through security fence. Riprap channel leading to stream was dry at time of inspection. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-111659 City of Oshkosh o20250805123324.JPG Outfall Notes: Storm sewer from Bradley St discharges to stream culvert from north. Screened at manhole. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):12 Height/Depth (in): Width (in): Not Physically Located Easting:792,777 Northing:461,187 Longitude:-88.53884 Latitude:43.98466 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-111659 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 12:37:33 PM Inspector:JCW o20250805123434.JPG Previous Rainfall (hrs):72+ Flow Description:None Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Incoming pipe dry and clean . units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:None Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-112427 City of Oshkosh o20250805150912.JPG Outfall Notes: Storm sewer from river walk discharges to river from south. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):36 Height/Depth (in): Width (in): Not Physically Located Easting:793,303 Northing:471,252 Longitude:-88.53686 Latitude:44.01227 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-112427 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 3:12:25 PM Inspector:JCW o20250805150918.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged. Upstream manhole located inside construction fence, so no sample collected. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services U-112428 City of Oshkosh o20250805150246.JPG Outfall Notes: Storm sewer from river walk discharges to river from south. Location Map Minor Outfall Discharge Location: Water of the State Structure Type: Closed Pipe Outfall Shape: Pipe - Circular Material: RCP Diameter (in):36 Height/Depth (in): Width (in): Not Physically Located Easting:793,630 Northing:471,023 Longitude:-88.53562 Latitude:44.01165 County Coordinates:Latitude/Longitude:Mapping Precison: Mapping GPS Dimensions City ID: U-112428 Non-Priority Non-Major Outfall NR 216 Class: Inspection Date:8/5/2025 3:06:03 PM Inspector:JCW o20250805150252.JPG Previous Rainfall (hrs):72+ Flow Description:Submerged, indeterminate Odor:None Color:None Turbidity:None Floatables:None Sample ID: Time Collected: Total Chlorine (field):-- Free Chlorine (field):-- pH (field):-- Detergents:-- ppm ppm mg/L Notes:Outfall fully submerged. Upstream manhole located inside construction fence, so no sample collected. units Temperature (field):--° F Inspection Type:Ongoing Graffiti:None Damage:None Erosion:None Deposition:None Displacement Corrosion Undercut Cracks/Structural Damage Crushed Depth (in): Depth (in): Petrol. Sheen Suds Sewage Algae Other ChlorinePetroleumMusty Fishy Sewage SulfurVOC/Solvent Fragrant Other Vegetation:None Inhibited Excessive Benthic Growth:None Green Brown Stains:None Flow Line Paint Oil Rust Stains Other Ammonia (field):--ppm Sampling Results Physical Condition Assessment Submerged:Fully Sample Location: Illicit Discharge Potential:Unlikely Gross Solids:None Litter Veg. Debris Sediment Other Non-illicit:None Natural Suds/FoamNatural Sheen Conductivity (field):--µS/cm 2025 Page 1 of 1Checked by:JCW - 12/1/2025 © 2025 Westwood Professional Services Appendix D Outfall Condition Summary D-1 Outfalls with Damage D-2 Outfalls with Deposition D-3 Outfalls with Erosion D-4 Outfalls with Graffiti OUTFALL CONDITION ASSESSMENTS While not required for the illicit discharge field screening, Westwood inspectors noted the presence of any visual structural damage, significant deposition or erosion, or graffiti at the outfalls. This information can be passed along to the appropriate personnel for any necessary action. Damage Five outfalls showed signs of damage that may require attention in the near future. Observed damage included pipe joint displacement, broken pipes and aprons, and corrosion. The outfall damage that was observed during the ongoing screening program is summarized in Table 1. Table 1 – Outfalls with damage Outfall Severity Description 06-2947 Minor Concrete apron displaced 1” 13-2563 Minor Northwest corner of concrete apron broken 13-68 Moderate Corrosion on metal apron 16-941 Moderate Grate from apron detached and laying on pond bottom FernauPond Minor Corrosion on metal apron The outfall damage is shown in the photos that follow. The locations of the damaged outfalls are shown on the map in Appendix D. Figure 1 – Outfall 06-2647 Figure 2 – Outfall 13-2563 Figure 3 – Outfall 13-68 Figure 4 – Outfall 16-941 Figure 5 – Outfall FernauPond Deposition A total of 30 outfalls showed minor, moderate, or severe deposition at the end of the outfall pipe or channel, or inside the upstream screening location. As deposition increases, flow may become restricted in the pipe or downstream channel. Outfalls with moderate or severe deposition may need to undergo maintenance to remove the deposited sediment and debris and maintain proper flow. The outfall deposition that was observed during the ongoing screening program is summarized in Table 2. Table 2 – Outfalls with deposition Outfall Severity Description 06-2947 Minor 1” sediment on apron 13-1098 Moderate 15” sediment inside pipe 13-1552 Moderate 8” sediment inside pipe 13-1588 Minor 2” sediment inside pipe and apron 13-471 Minor Rocks (channel riprap) inside pipe 13-68 Minor 1” sediment on apron Outfall Severity Description 15-3373 Minor 3” sediment inside pipe and apron 16-1628 Minor 1” sediment inside pipe and apron 16-995 Moderate 16” berm immediately downstream blocking flow; pipe clear U-43347 Moderate 6” sediment inside pipe; downstream channel even with pipe crown U-43406 Minor 2” sediment on apron U-43443 Minor 1” sediment inside pipe and apron U-43543 Minor 1” sediment inside pipe; 8” berm at end of apron U-43603 Moderate 6” sediment inside pipe U-43616 Severe 7” sediment inside pipe; downstream channel even with pipe crown U-43660 Minor 0.5” sediment inside pipe; riprap on apron U-43661 Minor 2” sediment inside pipe and apron U-43703 Minor 7” sediment on apron; pipe clear U-43837 Minor 2” sediment on apron; pipe clear U-43858 Severe 12” sediment inside pipe – fully buried, with cattails U-43975 Minor 2” sediment inside pipe and apron U-43982 Moderate 4” sediment inside pipe; bee nest in area U-44062 Minor 1” sediment inside pipe; 4” berm on apron U-44085 Moderate 5” sediment inside pipe; downstream channel even with pipe crown U-44117 Moderate 5” sediment inside pipe; downstream channel even with pipe crown U-44119 Moderate 5” sediment inside pipe; downstream channel even with pipe crown U-44142 Moderate 5 sediment inside pipe and apron U-44156 Minor 2” sediment inside pipe U-44238 Moderate 3” sediment inside pipe; 12” berm on apron U-110530 Minor 6” sediment inside pipe The outfall deposition is shown in the photos that follow. The locations of the outfalls with deposition are shown on the map in Appendix D. Figure 6 – Outfall 06-2947 Figure 7 – Outfall 13-1098 Figure 8 – Outfall 13-1552 Figure 9 – Outfall 13-1588 Figure 10 – Outfall 13-471 Figure 11 – Outfall 13-68 Figure 12 – Outfall 15-3373 Figure 13 – Outfall 16-1628 Figure 14 – Outfall 16-995 Figure 15 – Outfall U-43347 Figure 16 – Outfall U-43406 Figure 17 – Outfall U-43443 Figure 18 – Outfall U-435435 Figure 19 – Outfall U-43603 Figure 20 – Outfall U-43616 Figure 21 – Outfall U-43660 Figure 22 – Outfall U-43661 Figure 23 – Outfall U-43703 Figure 24 – Outfall U-43837 Figure 25 – Outfall U-43858 Figure 26 – Outfall U-43975 Figure 27 – Outfall U-43982 Figure 28 – Outfall U-44062 Figure 29 – Outfall U-44085 Figure 30 – Outfall U-44117 Figure 31 – Outfall U-44119 Figure 32 – Outfall U-44142 Figure 33 – Outfall U-44156 Figure 34 – Outfall U-44238 Figure 35 – Outfall U-110530 Erosion Three of the outfalls showed signs of erosion at the end of the outfall pipe or channel. Most outfalls with minor erosion could be repaired with minor landscaping repairs. Those outfalls with moderate or severe erosion may need additional structural reinforcement, such as turf reinforcement mat or riprap. The erosion that was observed during the ongoing screening program is summarized in Table 3. Table 3 – Outfalls with erosion Outfall Severity Description 03-22 Moderate Sinkholes behind concrete retaining wall over pipe 12-925 Minor Scour hole in channel immediately downstream of pipe 13-471 Moderate Downstream channel erosion The outfall erosion is shown in the photo that follows. The location of the outfall with erosion is shown on the map in Appendix D. Figure 36 – Sinkholes behind wall at outfall 03-22 Figure 37 – Scour hole downstream of outfall 12-925 Figure 38 – Channel erosion downstream of outfall 13-471 Graffiti Graffiti was observed in or around two outfalls. The graffiti was not severe but should probably be monitored to make sure that it does not become more severe. The graffiti that was observed during the ongoing screening program is summarized in Table 4. Table 4 – Outfalls with graffiti Outfall Severity Description 12-569 Moderate Graffiti on bridge abutment near outfall 16-844 Severe Graffiti on bridge abutments near outfall – both sides of stream The graffiti is shown in the photos that follow. The locations of the outfalls with graffiti are shown on the map in Appendix C. Figure 39 – Abutment near outfall 12-569 Figure 40 – Abutment near outfall 16-844 ! ! ! ! ! ! ! ! ! ! ! FernauPond 13-68 16-941 13-2563 06-2947 Damage Severity !Minor (3) !Moderate (2) !Severe (0) F:\ENVIRO\IDDE\GIS\Cond_Damage_Oshkosh.mxd PROJECT NO.R3000958.03 FIGURE NO.D-1 SCALE:1 " = 7,000 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING PROGRAM CITY OF OSHKOSHWINNEBAGO COUNTY, WISCONSIN OUTFALLS WITH DAMAGE.Date:12/16/2024 Printed: JCWeis 11/26/2025 2:36:01 PM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! !!!!!!! ! ! ! !!!!! 13-68 13-1098 13-471 16-995 13-1588 13-1552 16-1628 06-2947 15-3373 U-110530 U-44156U-43837 U-43543 U-44238 U-43603 U-43975 Deposition Severity !Minor (17) !Moderate (11) !Severe (2) F:\ENVIRO\IDDE\GIS\Cond_Deposition_Oshkosh.mxd PROJECT NO.R3000958.03 FIGURE NO.D-2 SCALE:1 " = 7,000 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING PROGRAM CITY OF OSHKOSHWINNEBAGO COUNTY, WISCONSIN OUTFALLS WITH DEPOSITION.Date:11/26/2025 Printed: JCWeis 11/26/2025 2:59:19 PM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com ! !! ! ! ! ! ! ! U-43661 U-44085 U-44119 U-44117U-43858U-43616 U-43982U-43347 U-44142 ! !! ! !U-43443U-43703 U-44062 U-43406U-43660 ! ! ! ! ! ! ! ! ! 12-925 13-471 03-22 Erosion Severity !Minor (1) !Moderate (2) !Severe (0) F:\ENVIRO\IDDE\GIS\Cond_Erosion_Oshkosh.mxd PROJECT NO.R3000958.03 FIGURE NO.D-3 SCALE:1 " = 7,000 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING PROGRAM CITY OF OSHKOSHWINNEBAGO COUNTY, WISCONSIN OUTFALLS WITH EROSION.Date:11/26/2025 Printed: JCWeis 12/2/2025 9:33:05 AM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com ! ! ! ! ! ! ! ! 16-844 12-569 Graffiti Severity !Minor (0) !Moderate (1) !Severe (1) F:\ENVIRO\IDDE\GIS\Cond_Graffiti_Oshkosh.mxd PROJECT NO.R3000958.03 FIGURE NO.D-4 SCALE:1 " = 7,000 'Project Manager: Project Engineer: Drawn By:JCWChecked By: 2025 IDDE ONGOING SCREENING PROGRAM CITY OF OSHKOSHWINNEBAGO COUNTY, WISCONSIN OUTFALLS WITH GRAFFITI.Date:11/26/2025 Printed: JCWeis 11/26/2025 3:06:50 PM 1 Systems DriveAppleton, WI 54914 (920) 735-6900www.westwoodps.com Work Product Report | Project Name Month Day, Year 1 | Confidential and Proprietary. TBPLS Firm #10074302 v