The URL can be used to link to this page

Home My WebLink AboutAECOM Proposal No. OPP-440827 AECOMAECOM 920.235.0270 tel 558 North Main Street 920,235.0321 fax Oshkosh,Wisconsin 53901 May 3,2016 MAY I I 101 MAY 2.1111, Mr.James Rabe,P.E.,CPI;SC J)I hVl"OF PUl: LI1��[�i�IC� Director of Public Works OSHKOSi1 IVIS(,ON�ti� City of Oshkosh 215 Church Avenue Oshkosh,Wisconsin 54901 Subject: Proposal for Knapp Street Quarries and Timmerman Landfill Operations and Maintenance Support during the remainder of the 2016 Calendar Year AECOM Proposal No.OPP-440827 Dear Mr. Rabe, AECOM Technical Services,Inc,(AECOM)has prepared this proposal for continued methane monitoring,sampling,landfill gas.coilection 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 remainder of the 2016 calendar year(CY2016). This proposal provides a summary of the specific project backgrounds,proposed scope of work,and estimated costs for continued environmental monitoring each site. Task 'I --Knapp Street Quarries Background The scope of services presented below is based on recommendations provided in our Operation Manual and in accordance with Wisconsin Department of Natural Resources Solid Waste(WDNR) requirements. The gas collection system was installed and started operation in 2010. AECOM personnel have continued monitoring the system and worked at balancing the gas recovery. The system has had a positive influence on reduction of the methane gas and thus reduced the risk of methane gas migration off-site. At this time the monitoring points are not showing methane concentration above 2.5%by volume. WDNR has conditionally approved a plan toward reduced operation of the landfill gas extraction system, if over a 4-month period there is effective gas recovery when cycling the blower operations(6-hours on and 4-hours off)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 in 2015. The plan will continue into 2016. Once completed AECOM will evaluate the results and provide recommendations to the City during 2016. AECOM worked with a subcontractor to install a new vent pipe on the blower station in 2015. In addition, the contractor made modifications to the grease tube operation to provide a constant temperature for the equipment. The blower engine also required replacement in 2016. OPP-440827_20W Knapp Street&Timmerman Operations Proposal.docx AECOM 2 Scope of Services Methane Gas Monitoring 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, IS 1�EMU Gas Monitoring OW_3,GW-12,GW-20, Oxygen,methane, Wells GW-20A,GW-22,GW-23, carbon dioxide, GW-23A,GW-24,and balance gas, Monthly GW-24A,GW-25,GW-25A groundwater level monitoring,vacuum Oxygen,methane, GW-2,GW-9,GW-10,GW- carbon dioxide, 11,GW-14,GW-17,and balance gas, Quarterly GW-19 groundwater level monitoring Gas Extraction WH-1 through WH-15 and Oxygen,methane, Wells VV-1 through VV-9 carbon dioxide, Semi-Annually balance gas,vacuum Header Pipe at the glower(inflow) Vacuum before Monthly Blower Station blower Vent Pipe Oxygen,methane, Blower(discharge) carbon dioxide, Monthly pressure after blower,velocity/flow Condensate Sample Condensate Sample Point Field pH,TBD If needed Point NOTES: 1. At the time of monitoring the gas wells,gas extraction wells,header pipe at the blower station,and the discharge vent pipe,site conditions will be monitored for the following parameters. 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 in the following gas monitoring wells: GW-1,GW-3,GW-4,GW-5, GW-6,GW-7,GW-S,GW-15,and GW-16 and the following observation wells,OW-1 and OW-2,which were abandoned. 3. WH-7 and W-2 do not exist. At each gas monitoring well,and system sampling port the vacuum pressure,initial percent of the LEL of methane(percent LEL methane),percent methane gas(percent methane),percent oxygen (percent 02),percent of carbon monoxide(percent CO2,air flow[CFM]),and groundwater levels will be measured. The LEL is the minimum concentration of a particular combustible gas or vapor necessary to support its combustion in air. The LEL of methane gas is 5%methane by volume. Observations(such as ground condition,barometric pressure,and monitoring well conditions)will also be recorded. d:1PROPOSAL1City of OshkoWOPP-0.40827_2016 Knapp Street&Timmerman\OPP-440827-2016 Knapp Streot&Timmerman Operations Proposakdocx AECOM 3 After initial readings are recorded,monitoring wells will be purged with a pump at a rate of 2 liters per minute. Continuous percent LEL methane is to be measured as the well is purged. A final reading will be recorded when consecutive methane readings are within+10%LEL. Final measurements include percent LEL methane, percent methane gas, percent CO2,and percent 02. The length of time required to achieve the final reading is typically unique to each well. Schedule and Reporting Methane sampling and system 0&M will be completed in accordance with the above schedule through December 2016. The monitoring data will be summarized and electronically submitted to the City and WDNR on a semiannual basis. On an annual basis,following completion of the pilot testing,a report will be submitted to the WDNR(including cover letter with discussion and conclusions). AECOM will immediately notify the City of any new methane wells that indicate an exceedance of the 25%LEL. Task 2—Timmerman Landfill Background AECOM has been assisting the City with environmental services related to Timmerman Landfill groundwater issues. These services have included groundwater and methane monitoring,landfill cap thickness verification,laboratory testing,data review,and closure planning. In response to the Wisconsin Department of Natural Resources(WDNR) Notice of Violation dated August 2, 2006,AECOM completed a Site Assessment Report(SAR) in compliance with NR700 and subsequently installed three additional groundwater monitoring wells..In 2008 and early 2009, AECOM completed the closure of the site under the WDNR Remediation and Redevelopment(RR) program and the site was transferred to the WDNR Solid Waste Program. In 2010,AECOM recommended the abandonment of six monitoring wells. The WDNR subsequently requested additional investigation regarding the presence of a passive methane collection trench,which AECOM completed using test pits. Based on the results of 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 2013. Scope of Services This proposal includes two rounds(semiannual)of groundwater monitoring,subcontract analytical laboratory services,and project reporting obligations through CY2016. In addition, landfill gas will be monitored and reported to the WDNR until approval to discontinue the methane monitoring and abandon the wells is achieved. Groundwater samples will be collected according to the WDNR approved monitoring requirements in the chart below: F. MW-1,PZ-4, PZ-5, MW-6, Alkalinity,Chloride,Hardness, MW-7, PZ-7,PZ-7D,MW-8, Groundwater Elevation,field pH,field Semi-annually PZ-1,PZ-8,PZ-9,SQDMW-1, Temperature,field conductivity PZ-10 Volatile Organic Compounds(VOCs) Annually MW-9, MW-10 Groundwater elevation,field pH,field Semi-Annually conductivity VOCs Annually JAPROPOSAWity o1 Oshkosh\OPP-440827_2015 Knapp Street&Timmerman\OPP-440827_2018 Knapp Street&Timmerman Operations Proposal.doex AECOM 4 ' 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 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 obtained during monitoring activities. Schedule and Reporting Groundwater sampling will be completed twice annually(April and October),and gas monitoring will be completed on a quarterly basis(January,April,July and October)through December 2016. The monitoring data will be summarized and electronically submitted to the City and WDNR on a semiannual basis. Estimated Fees The following summarizes the proposed tasks and estimated fees: Task Fee Task 1 —Knapp Street Quarries Methane Monitoring and System Maintenance and Operation during CY2016 Includes H2O level meter,methane meter,002 and 02 meter $18,200 and rental costs WDNR Reporting,GEMS Database Updates,and Project Management $9,200 Task 1 Total $27,400 Task 2—Timmerman Landfill Groundwater/L.FG Monitoring 2 Events during CY2016 Includes H2O level meter,methane meter,CO2 and 02 meter rental $8,900 costs Subcontracted Laboratory $2,600 Abandon Gas Monitoring Points(pending WDNR approval) $2,200 WDNR Reporting,GEMS Database Updates,and Project Management $4,400 Task 2 Total 1 100 Total Project Fees $45,500 Terms and Conditions 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 or services. 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 2016 Negotiated 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. JAPROPOSAMity of Oshkosh%OPP-440827_2016 Knapp street&Timm erman\OPP-440827_2016 Knapp Street&Timmerman Operations Proposal.doox AECOM 5 To initiate this work,please sign the attached Authorization to the AECOM Oshkosh,Wisconsin office. Our understanding is that the City of Oshkosh will also issue a Purchase Order for all approved tasks. Please reference the AECOM proposal number,OPP-440827,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. Sincerely yours, YAECOTechnical Services,Inc. L. Frelmund,P.G. Paul F.Timm Manager Account Manager Kevin L. Brehm, P.E. Associate Vice President Attachments. Authorization JAPROPOSALICity of OshkoshlOPP-440827_2016 Knapp Street&Timm erman\OPP-440827 2016 Knapp Street&Timmerman Operations Proposal.docx AECOM—/�O�A AECOM 820.235,0270 tel E M 558 North Main Street 920.235.0321 fax Oshkosh,WI 54901 Authorization May 3,2016 1 hereby certify that the necessary provisions have been made to pay the liability,which will accrue under this contract, hereby authorize AECOM to proceed with the scope of work Knapp Street Quarries and Timmerman landfill Operations and Maintenance Support during the remainder of 2016 Calendar Year as described in AECOM's proposal OPP-440827 dated May 3,2016,with a budget authorization of$45,500 under the general terms and conditions specified in the proposal. Sign ture Date Mark A Rohloff Print Name City Manager Title/Org Dation E 5inature g Date i P mea !rig J Print Name _.City Clerk Tltl rganization Sig a u e Date Lynn A. Lorenson Print Name City Attorney Title/Organization Signature Date Trena Larson Print Name Director of Finance Title/Organization JAIPROPOSALACity of OshkosMOPP-440827_2018 Knapp Street&Tim mermanlOPP-440827_2016 Knapp Street& Timmerman Operations Proposal.docx AECOM 7 1 agree to accept invoices from AECOM via e-mail and not postal mail: F] Yes Signature: E-mail address: Recipient Mr/Ms: Return to: Name: Paul Timm Address: 558 N. Main Street,Oshkosh,WI 54901 Phone: 920-236-6718 E-mail: Paul,Timm@aecorn.com J:TROPOSAUCity o!Oshkosh\OPP-440827_2016 Knapp Street&TimmermanWP-440827_2018 Knapp Street&Timmerman Operations Proposal.docx