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Home My WebLink AboutAmendment Request #2/AECOM OPP-381501 Asoow . emNorth Main Street Oshkosh,w/s*oo/ - --- neoom.00m %lE C'I ]��D _ Date J L)L 13 2017 July 13' 2O17 I)29T�]F9U�UC \�8�KS ��ECO8OPro�ctNo. Q�HKL)�B, \V|8COWS/N 80427918 | yNcJameaRaba. PE' {�P�S{� Director of Public Works � City ofOshkosh 215Church Avenue � PDBox1130 ( Oshkosh,VV| S4QO3-1130 / Amendment Request Number 2 for Continued Environmental Investigation and Gas Well Monitoring atPC|enaatand Paulus Quarries Dear Mr. Rabe, AECDyWTechnical Services, Inc. (AECOM) is requesting an amendment to the agreement dated May 27' 2U16 /AECOyWProposal Number{}PP'881SO1>. City Resolution No. 15'285' and Amendment 1 dated February 27. 2017, City Resolution No. 17'72. This amendment request iafor additional services completed to date and for continued monthly monitoring of the Landfill Gas (LFG) monitoring vve||a from April through December of2817. |naddition, the amendment provides recommended scope ofwork and estimated costs to complete additional site investigation and continued WDNR Interface. Addftioinal Scope of Work Conduct Monthly Monitoring cdLFGWells Additional months (April-December, 2U17> Site Investigation 858VV. 17 t»Axe. Conduct additional investigation and subcontract test pits and monitoring vve||e installation VVDNR |nterfaue Prepare Project Summary and GEMS Reporting This amendment was prepared based nnthe following assumptions: � � ° Monthly Monitoring will continue through the end ofDecember 2O17. � * Additional WDNR interface will be necessary based upon recent meeting with WDNR Landfill Engineer Tess 0uoge. * Additional Subsurface Investigation will bacompleted at858VV. 17*Avenue inoneffort hubetter / define the limits ofrefuse m1this property. � Additioinal MorAl"fly Manitoiriing AECOM proposes to continue monthly methane monitoring activities based on original discussions with VVDNApersonnel and inaneffort hocollect LFGnyetamdesign data. Adeach gas monitoring well, initial percent cf the LEL ofmethane (percent LEL m*thune)' percent methane gas (percent methane), percent oxygen (percent 02), percent of carbon dioxide (percent COA and groundwater levels will bemeasured. The LEL iethe minimum concentration ofoparticular combustible gas orvapor necessary tusupport its combustion inair. The LEL ofmethane gas ie5% methane byvolume. Observations (such as ground condition, barometric pressure, and monitoring well conditions) will also berecorded. After initial readings are recorded, monitoring vve||n will be purged with a pump ata ode of two liters per minute. Continuous percent LEL methane iatobemeasured aethe well iapurged. Afinal reading will be w:\pmomam0:2/918_xi t Quarry m,emigoiom/00'con/mon102-Amvnumvnt2\60*27918_x/onant Paulus Quarries Amendment 2-20/707/3-fmo/oocx 1/5 , recorded when consecutive methane readings are within±18% LEL. Final measurements include percent LEL methane, percent methane gas, percent CC2' and percent 02. The length nftime required toachieve the final reading iatypically unique toeach well. | VVohave been completing this effort since April 201G. Amendment provided budget tocomplete the � monitoring through March, 3O17. VVehave been requested byCity staff hncontinue monitoring through � December 2017. Monthly labor costs toperform the monitoring are approximately$1'2GOper month. These costs include � the rental cftesting equipment. Please note mmhave been scheduling the sampling events 1ocoincide � with Knapp Street Quarries and Timmerman Landfill projects to eliminate multiple shipping ohergme' reduce rental fees for the monitoring equipment, and provide a single equipment charge for the use of an AEC{}K4truck and other field equipment. The total estimated cost for these additional services ie approximately$11,340. Additional Site Investigatiori Based on the neau|io of the site investigation previously completed, City staff requested that further site investigation becompleted e18GQVV. 17 m Avenue toverify the limits cfwaste onthe property. Specifically the location in respect tothe building foundation will be evaluated. AECOM proposes to subcontract with an excavation firm to complete test pits near the house. We will utilize the same contractor who completed previous teat pits at the site. We anticipate this work will be completed inone day. The estimated cost includes landscape restoration. AECOManticipates installing another set of nested landfill gas monitoring wells in close proximity tothe building foundation on the landfill property. These will be utilized as additional monitoring points for the dwelling as an indicator for LFG intrusion. The anticipated cost for this effort is $16,670 of which $9,450 is s u bcontract-related costs. INDNR Interface AECOk8will prepare eproject update for presentation tothe new VVDNRproject manogeroncethe additional site investigation is completed. We have conducted a site walk through with the new VVDNR engineer and public meeting for this project, neither nfwhich were included in the original scope of work. We anticipate conducting afo||nvv'up meeting with the VVONR manager to discuss the results and recommendations provided in the project update. In addition,TheVVDNR is now requiring thaVVONR Groundwater and Environmental Monitoring System (GEMS) data base be updated with the LFG monitoring results. The anticipated cost to provide these services through December, 2017 is $6,940. The GEMS database will be updated by Dan O'Connell and the project update will be prepared by Cliff Shierk and Paul Timm. The additional meetings with VVDNRwill be attended by Cliff Ghiark. and Paul Timm along with City staff. K:\Projects\60427918-KienastQuarry o2-Amendment A COM The services provided will be performed in accordance with the 2017 Negotiated Fee Schedule and conditions of the General Conditions of Service—City of Oshkosh,April 2009, which are expressly incorporated into, and are an integral part of, our agreement for professional services. AECOM can begin providing these services immediately upon receipt of the signed Amendment Authorization Form (attached). If you have any questions or need to clarify a point, please call Mr. Paul Timm at 920-236-6718. Yours scerel 40A � � \ Clifford R. Shierk, P.E. Kevin L. Brehm, P.E. Project Engineer Associate Vice Preside t encl: Amendment to Agreement Authorization K:\Projects\60427918_Kienast Quarry Investigation\100-CONTRACT\102-Amendment 2\60427918_Kienast Paulus Quarries Amendment 2_20170713.docx 3/5 , ' emwMain Street oo�v�.w/mmnuoa*ou1 ° 920.236.6710 Arneridimeint ,to Agireernen't Amendment No.Q Environmental and Engineering Services for the Former Kienmmtand Paulus Quarries . City oVOshkosh,Wisconsin � AECOK8 Project No. 60427818 City of Oshkosh Resolution No. 16~285 � RETURN TO: AECOK8 Date: July 18. 2017 . 558 North Main Street Oshkosh,WI 54901 Attention: Paul Timm SUMMARY: Original Contract Amount: $116'000.00 Amount Previous Amendments: $23'770.00 Amount this Amendment Revised Contract Amount $174'720.00 Amendment# DESCRIPTION AMOUNT 2 Monthly Monitoring ( Nine Months) including labor and equipment $11.340.00 Additional Site Investigation Including Subcontract Services $16,670.00 VVONR Interface/Memorandum $6,940.00 TOTAL $34.950.00 :\Poms\oo4c ux/ ast Quarry Investigation\100-Contract\102-Amendment2m042918_xienam ' emwMain Street Oshkosh,Wisconsin` 920.236.6710 Authorization July 13, 2017 1 hereby certify that the necessary provisions have been made to pay the liability which will accrue under this contract. I hereby authorize AECOM to proceed with the scope of work outlined in Amendment 2, hoamend AEC[)M'sproposal [>PP '3815U1' dated May 27. 2O15and Amendment 1' dated February 27. 2017for Environmental and Engineering Services Related to the Former Kienast and Paulus Quarries, Oshkosh, Wisconsin for a revised contract amount of$174,720.00 under the general terms and conditions specified inthe proposal. gignature bate Mark ARnh|nM Print Name City Manager Sigr4i&6' Date Pamela R. Ubrig Print Name City Clerk ibre Date Lynn A. Lorenuon Print Name City Attorney '6 Uwa Signature J � Date TrenoLareon Print Name Director of Finance