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Home My WebLink AboutProposal for Knapp Street Quarries and Timmerman Landfill ` � '2.� `��_� ascow AECOM sau North Main Street Oshkosh,vwamo1 memm.'mm November 2. 2O1B AECOM Proposal No. Mr. James Rmbe, PE,CPESC OPP'830130 Director of Public Works City ofOshkosh 215 Church Avenue Oshkosh,VN549D1 Proposal for Knapp Street Quarries and Timmerman Landfill Operations and Maintenance Support during the2019 Calendar Year Dear Mr. Rabe, AECDM Technical Services, Inc. (AECOM)has prepared this proposal for continued methane monitoring, sampling, landfill gas collection system operation and maintenance, and reporting at the former Faber Quarry and former Oshkosh Stone Company Quarry(collectively known as the Knapp Street Quarries)and groundwater and methane monitoring, sampling and reporting at the former Timmerman Landfill during the 2019 calendar year(CY2019). This proposal provides e summary of the specific project backgrounds, proposed scope of services and estimated costs for continued environmental monitoring at each site. �,',isk I Street QUarries , Background The scope of services presented below is based on recommendations provided in the Operation Manual and in accordance with Wisconsin Department of Natural Resources(WDNR)Solid Waste requirements. The gas collection system was installed and started operation in2D1O. AECOM personnel have continued monitoring the system and continually work at balancing the gas recovery. The system has had a positive influence onthe reduction of methane gas and thus reduced the risk of methane gas migration off-site. /t this time the monitoring points show methane concentration below 2.5Y&byvolume. The VVDNR has conditionally approved o plan toward reduced operation of the landfill gas extraction system. That plan requires that there ia effective gas recovery when cycling the blower operations(6-hours on and 4-hours off)over a 4-month period and following the closure of sections of vent piping that have had less than detectable readings for methane for a consecutive 12-month period. This plan was initiated in2O15. Prior to and during the test period, system mechanical issues occurred that prolonged the testing program,which included: = Replacement oy the blower motor(twioe. covered bywanenty). ° Replacement of the exhaust stack(collapsed prior to the test commencing). • Modifications to the grease tube operation to provide a constant temperature for the equipment. AECOM worked with a contractor<o make the repairs and modifications. The testing was completed inSeptember 2016. Based on the results of the reduced operation testing, and with concurrence from the WDNR,the active system ie still required to control landfill gases. Another reduced operation test will be planned in the next 5 years toverify conditions at that time. In 2016, it was observed that several of the flush-mount protective covers surrounding the monitoring wells located in sidewalk or parking lot pavement were no longer able to protect the integrity of the wells. |n2O18. it was observed some of the LFG control vaults had also been damaged. The damage was likely due to age of the structures, damage from snow plowing and damage to the surrounding surface from freeze-thaw cycles(uneven grade). The repairs ho the flush-mount protective covers and vaults will be completed in 2019 if any savings to the proposed budgets are realized. xAPnopos*L\C/ uomokovmopP-000/o�2n1e Knapp ot&nmmmmmnmp�uoo�o�2u1yKnapp utur/mmwmnunp�noowm"ux 1m ASCOM |n the summer of2U1ToVVDNB Solid Waste Engineer inspected the site. AECDM and City Staff completed the site inspection with the VVDNRrepresentative. All items that were identified during this inspection were corrected by AECOM or City staff, and AECOM prepared a letter detailing the corrective actions and submitted it to the WDNR, �Cnp� ofBemio�s &4eth�neSaayNondoring AECOM proposes to continue to conduct methane monitoring activities based on the schedule provided in the WDNR conditional approval letter dated April 15, 2014 and as presented in the chart below: Location ldmnUficet|on �wrmmotera Fr�quenoy OW-3, GW-12, GW-20, GW-20A, Oxygen, methane, carbon dioxide, GW-22, GW-23, GW-23A, GW-24, balance gas, groundwater level Monthly Gas Monitoring Wells GW-24A, GW-25, and GW-25A monitoring, vacuum GW-2, GW-9, GW-10, GW-11, GW- Oxygen, methane, carbon dioxide, 14, GW-17, and GW-19 balance gas,groundwater level Quarterly monitoring Gas Extraction Wells WH-1 through WH-15 and VV-1 Oxygen, methane, carbon dioxide, Semi-Annually through VV-9 balance gas, vacuum Header Pipe at the Blower ' Station Blower(inflow) Vacuum before blower Monthly Vent Pipe Blower(discharge) O«YQen, methane, carbon dioxide. Monthly pressure after blower, | i Condensate Sample Point Condensate Sample Point Field pH,TBD Ifneeded 1. The following information will be recorded during each sampling event:ambient air temperature,barometric pressure,trends in barometric pressure,ground surface conditions,type of meter used,and latest meter calibration date. ' 2. Monitoring has since been discontinued m the following gas monitoring wells: GW-1.SW-3.8w/*.8vv5.sW-6.GW-7.oW-e^ GW-15,and GW-16 and the following observation wells,OW-1 and OW-2,which were abandoned. 3. VVn-r and Vv-uup not exist. At each gas monitoring well and system sampling port the vacuum pressure, initial percent nf the LELofmethane (percent LELmethnne). percent methane gas(percent methane), percent oxygen(percent Oz), percent ofcarbon diooxide(percent COz), air flow(CFM). and groundwater levels will be measured, The LELim the minimum concentration of a particular combustible gas or vapor necessary to support its combustion in air. The LELof methane gas is 5%methane by volume. Observations(such as ground condition, barometric pressure, and monitoring well conditions)will also berecorded. After initial readings are recorded,monitoring wells will be purged with a pump at a rate of twoliters per minuba Conhnuouapa�entLELm�hanawiUbemeaau�dea the weUiapurged, A final �odingwill be recorded when - consecutive methane readings are within±1OY6 LEL Final measurements include percent LELmethane, percent methane gas, percent C[6 and percent C2, The length nf time required Uo achieve the final reading istypically unique 0o each well. Based on the 2017 WDNR site inspection,AECOM has added a checklist to be completed during each site visit. The checklist includes all items identified during the site inspection. |f deficiencies are noted,AECOM staff will inform the City and assist with developing asolution. 8Chedu|e �nd R�po�in� Methane sampling and system O&M will be completed in accordance with the above schedule through December 2019, The monitoring data will be summarized and electronically submitted to the City and WDNR GEMS database xAPnopoaAuu pP-8au1uo_2m1n Knapp Stunmmennuvmppauum��n1yxve»n atar/mmem, np�nvsam�x on ` - AECOM onesemiannual basis. Onan annual basis, m report will besubmitted to the N0NR(including cover letter with discussion and conclusions), AECOM will immediately notify the City of any new methane wells thatindicate an exceodonceof26Y6of the LEL T�.",i s k, 2 — �[hfriirr'�(;,r00ar� Lar-OM B�okQrouMd AECOM has been assisting the City with environmental services related to the Timmerman Landfill since 1978. These services have included groundwater and methane monitoring, landfill cap thickness verification, laboratory testing, data review, and closure planning, In response to the WDNR Notice of Violation dated August 2,2006, AECOM completed a Site Assessment Report(SAR)in compliance with Wisconsin Administrative Code Section NR 700 and subsequently installed three additional groundwater monitoring wells. |n2OO8 and early 2no8.AECOM completed the closure of the site under the WDNR Remediation and Redevelopment(RR)program and the site was transferred hz the VVDNR Solid Waste Program. |n281O.AEOUM recommended the abandonment of six monitoring wells. The WDNR subsequently requested additional investigation regarding the presence of a passive methane collection trench,which AEC0M completed using test pits. Based on the results o[the test pit investigation and AECOM's recommendation in 2010,the WDNR approved the abandonment of the six wells and required the installation of two gas probes(in addition to the four already installed at the site)for additional methane monitoring in a letter dated February 3O13. |n the aummerof2O17. aVVDNR Solid Waste Engineer inspected the site, AECOM and City Staff completed the site ` inspection with the WDNRrepresentative, All items that were identified during this inspection were corrected by AECOM or City staff, and AECOM prepared a letter detailing the corrective actions and submitted it to the WDNR. �COp� UfG�rmcf'� 5 This proposal includes two rounds(semiannual)of groundwater monitoring, subcontract analytical laboratory services, and project reporting obligations through CY2O1S. |n addition, landfill gas will be monitored quarterly and reported k/ the WDNR until approval to discontinue the methane monitoring and abandon the wells is achieved. AECOM . submitted o gas monitoring reduction request in2O10. The request was subsequently denied by the VVDNRae methane monitoring is required to be completed quarterly by Wisconsin Administrative Code NR 500. Groundwater samples will be collected according to the WDNR-approved monitoring requirements in the chart below: Lomatioo Par�materm Frequeno� ..........�� Nko|in|�K Chloride, Hardness, Groundwater M��1 PZ4 P��5 �V�O �V�7 P�7 ' ' ' ' ' ' PZ-7D' Mm�8' PZ,1'PZ-8 E|evadon.Ue|dpH, field temperature, field Semi-annually P�-Q' d �i | ty 8QDMV�1. PZ-10 Volatile Organic Compounds(VOCs) Annually Groundwater �vai 8 |d pH,field conductivity Semi-Annually �VV9. K8��1O — - '—' - VOCS Annually Groundwater monitoring wells will be purged prior to collecting the samples and field monitoring parameters. Gas monitoring points(GP-1 through GP-6)will be monitored quarterly for methane, oxygen, and carbon dioxide, per the methods described above under the Knapp Street Quarries Scope of Services, as required by the WDNR. Readings for barometric pressure, pressure trend, and temperature will also be collected during monitoring activities. Based on the 2017 WDNR site inspection,AECOM has added a checklist to be completed during each site visit. The checklist includes all items identified during the site inspection. |f deficiencies are noted,AECOk8 staff will inform the City and assist with developing osolution. KAPROPOSAMity of o*xm,,mopp-uoo1oo_uo10 Knapp otur/mmem"m^mpp'oou1a�2o1yKnapp atmnmmmnnunpmvv`m/.upm om - AECOM �chedu|� 8ndRepodin� Groundwater sampling will be completed twice annually(April and October), and gas monitoring will be completed on a quarterly basis(Jonuary,April, July, and October)through December 2O1S. The monitoring data will besummarized and electronically submitted to the City and VVDNRona semi-annual basis. The following summarizes the proposed tasks and estimated fees: Task' Fam Task 1 -Knapp Street Quarries Methane Monitoring and System Maintenance and Operation during CY2019 Includes $55.850 HuO level meter, methane meter, CO2 and 0u meter and rental costs VVDNR Reporting, GEMS Database Updates,and Project Management $13L200 Task 1Total $49'050 Task 2-Timmerman Landfill Groundwater(2events)/LFG Monitoring(4 events)during CY2O19 $16.85D |ndudesHzD|eve|metecmethonem�e� COzandO2m�ermnta|moate , Subcontracted Laboratory $3.000 VVDNR Reporting, GEMS Database Updates,and Project Management $6,400 Task 3Total $217-60 Total Project Fees $73'800 Please note,AECOM was able to reduce the overall 2019 budget by$8,950 as compared to 2018 by combining site visits with the Kienast and Paulus Quarries, and by adjusting the level of AECOM staff assigned to the project. Future ServiGe,,,,'� to bc:,� C,,oKnbiru,:�d Kna�pp Sh'E'.1EA C,..,),Uardes arid Ti00Nneartan We anticipate the installation, start-up, and operation of the Kienast and Paulus Quarry landfill gas collection system will occur in2O18. Startup, operation, and maintenance costs through 2O20 associated with the Kienont and Paulus Quarry landfill gas system will be incorporated in the construction management agreement for that project. |n2O21. � these services are anticipated hnbe incorporated in the 2021 Landfill Operation and Maintenance Agreement, By / combining these services on the multiple sites,AECOM anticipates there will be cost savings to the City during the | operation and maintenance of these sites by effectively scheduling the work required consecutively and inocost effective and timely manner. �(,,,,r rin a rv,:l C(:,�r"t d�t�o i'i s If services to be provided under this proposal require the agents,employees,or contractors of AECOM to enter onto the Project site, Client shall provide right-of-access to the site to AECOM, its employees, agents, and contractors,to conduct the planned field observations orservices. The services described in this proposal will be provided on a time- and-material basis. AECOM will not exceed the above estimate without your authorization and approval. The services provided will be performed in accordance with the approved Fee schedule and with the conditions of the 2009 City of Oshkosh Negotiated General Conditions of Service,which are expressly incorporated into, and are an integral part of, our contract for professional services. Tb initiate this wmrk, please sign and return the attached Authorization to meAEOOM Oehkoah.Wisconsin office. Our understanding is that the City of Oshkosh will also issue a Purchase Order for all approved tasks. Please reference KAPROPOSAMity of o*hkvsompp'oon1a�2o10 Knapp atcnmmem"a^mp�aoo/u�2o1oKnapp m&nmmeoma^pmpovomvcx 4a A COM the AECOM proposal number, OPP-830130, in the Purchase Order that is forwarded to the AECOM Oshkosh Office. We are looking forward to working with you and providing assistance with this project. If you have any questions or need to clarify a point, please call any of the undersigned at 920-235-0270. Yours sincerely, COM Technical Services, Inc. l Y Paul Timm !z, �. Kevin Brehm, P.E. /✓l av Account Manager Associate Vice President enclosure: Authorization KAPROPOSAL\City of Oshkosh\OPP-830130_2019 Knapp St&Timmerman\OPP-830130_2019 Knapp St&Timmerman Proposal.docx 5!8 - ' AECOM 55mN Main Street Oshkosh,vwaoonoins^9o1 820.23e.6710 A ur% io ii'izaflon November 2. 2O18 1 hereby certify that the necessary provisions have been made to pay the liability,which will accrue under this contract. | hereby authohzaAECOM to proceed with the scope of work for Knapp Street Quarries and Timmerman Landfill Operations and Maintenance Support during 2019 Calendar Year as described in AECOM's proposal OPP-830130 dated November 2,2018, with a budget authorization of$73,800 under the general terms and conditions specified in the proposal. AK� ' u �( S I ( � Signaf6re Date Mark ARoh|off Print Name City Manager | ( ^ Signature Date Pamela R. Ubrig Print Name City Clerk Title/Organization Lynn A. Loxanoon Print Name City Attorney Title/Organization Signature ~~ Date TnenaLamon Print Name Director ofFinance Title/Organization KAPROPOSAMity ofoa xosmoppuun1oo_u 1ymnanv�unmmmrm*"mppouo1uu_ u,yxnavn atmnmm�moopmn�a/umx sm