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Home My WebLink About2023-336-E-Solid Waste-Draper Aden Associates-Groundwater monitioring program FY 2023-2024 TO: Mr. Bruce Woody Orange County Solid Waste Management FROM: Sean Jarvah Environmental Services Division DATE: 06/09/23 SUBJECT: Groundwater Monitoring Program (FY 2023-2024) OCSWM South Landfill: TRC Project No. pending TRC Engineers, Inc., (formerly Draper Aden Associates) proposes to provide professional environmental services to Orange County Solid Waste Management (OCSWM) pertaining to the groundwater monitoring and corrective action program at the South Landfill, in accordance with an existing Services Agreement between OCSWM and TRC. The subject proposal is intended to encompass services that will be provided during the 12-month period between July 1, 2023, and June 30, 2024 (FY 2023-2024). This proposal is restricted to services to be provided for the South Landfill. Specific tasks to be performed during the service period are detailed as follows. A memorandum dated March 13, 2023, by North Carolina Department of Environmental Quality (NCDEQ) Division of Waste Management (DWM), Solid Waste Section (Section), stated that all groundwater, surface water, and leachate samples collected at solid waste sanitary landfills after July 1, 2023, are required to be analyzed for per- and polyfluorinated substances (PFAS). This includes any active, inactive, or closed sanitary landfill currently conducting and reporting water quality and/or leachate sampling results to the Section. Additional Per this requirement, PFAS sampling is included in this proposal and additional laboratory analytical fees are reflected in the sampling fees provided below. Task-01 Groundwater Sampling Event 59 (Event 2023 S2) TRC proposes to conduct groundwater sampling event 59 at the Orange County Regional Landfill - South Landfill during November 2023. Prior to the event, TRC proposes to develop MW-104, MW-107 and MW- 111 using the dedicated pump currently installed in these wells. These wells had high turbidity during the previous sampling event. Due to the additional PFAS analysis, all efforts should be made to reduce turbidity below 25 NTUs if possible. These activities are only scheduled for the 2023 S2 event. DocuSign Envelope ID: 33C094A0-39E5-4FF7-B854-69713E181C21 Mr. Bruce Woody June 9, 2023 Page 2 TRC shall coordinate field and laboratory services, obtain groundwater samples, review sampling documentation received from groundwater sampling personnel, chemically analyze groundwater samples (Eurofins), validate analytical data provided by the contracted laboratory, update historical summary tables, and prepare a report suitable for direct submission to NCDEQ. During the subject sampling event, the laboratory will analyze: ▪ samples obtained from seven compliance wells (6801-MW101, 6801-MW102S, 6801-MW104, 6801-MW106, 6801-MW107, 6801-MW110S, 6801-MW111) for the constituents listed in Appendix I ▪ samples obtained from one compliance well (6801-MW105) for the constituents listed in Appendix II ▪ additional samples obtained from well 6801-MW110S for constituents required by regulations for monitoring of C&D landfills (manganese, iron, mercury, chloride, sulfate, tetrahydrofuran, total dissolved solids, alkalinity) (well 6801-MW110S is associated with the monitoring programs for both the active C&D landfill and South sanitary landfill) ▪ samples obtained from well 6801-MW110D for total arsenic ▪ all samples (9 wells) for full list of PFAS compounds (40 analytes) of EPA (draft) method 1633 per NCDEQ requirements. . ▪ additional samples obtained from well 6801-MW110S for quality control parameters (MS/MSD) ▪ one trip blank for quality control parameters and one duplicate, one field blank for PFAS. In addition to the above analysis, TRC plans to coordinate with field personnel to obtain one leachate sample from the South Facility for the analysis of the constituents listed in Appendix I, plus BOD, COD, manganese, mercury, nitrate, sulfate, and phosphate. The leachate sample will also be submitted for PFAS analysis. TRC will prepare a digital version (Adobe Acrobat or functional equivalent) of the report and provide it to OCSWM and to NC- DEQ. Additionally, all electronic data deliverables (EDDs) will be compiled and submitted to the state’s EQUIS database per NCDEQ requirements. This action was previously covered under the regulatory task. Task-02 Groundwater Sampling Event 60 (Event 2024 S1) TRC proposes to conduct groundwater sampling event 60 at the Orange County Regional Landfill – South Facility during May 2024. TRC shall coordinate field and laboratory services, obtain groundwater samples, review sampling documentation received from groundwater sampling personnel, chemically analyze groundwater samples (Eurofins), validate analytical data provided by the contracted laboratory, update historical summary tables, and prepare a report suitable for direct submission to NC-DEQ. DocuSign Envelope ID: 33C094A0-39E5-4FF7-B854-69713E181C21 Mr. Bruce Woody June 9, 2023 Page 3 During the subject sampling event, the laboratory will analyze: ▪ samples obtained from eight compliance wells (6801-MW101, 6801-MW102S, 6801-MW104, 6801-MW105, 6801-MW106, 6801-MW107, 6801-MW110S, 6801-MW111) for the constituents listed in Appendix I ▪ additional samples obtained from well 6801-MW110S for constituents required by regulations for monitoring of C&D landfills (manganese, iron, mercury, chloride, sulfate, tetrahydrofuran, total dissolved solids, alkalinity) ▪ samples obtained from well 6801-MW110D for total arsenic ▪ all samples (9 wells) for full list of PFAS compounds (40 analytes) of EPA (draft) method 1633 per NCDEQ requirements. ▪ additional samples obtained from well 6801-MW110S for quality control parameters (MS/MSD) ▪ one trip blank for quality control parameters and one duplicate, one equipment blank for PFAS In addition to the above tasks, TRC plans to coordinate with field personnel to obtain one leachate sample from the South Facility, for the analysis of the constituents listed in Appendix I, plus BOD, COD, manganese, mercury, nitrate, sulfate, and phosphate. The leachate sample will also be submitted for PFAS analysis. TRC also plans to coordinate with field personnel to obtain groundwater samples from one residential well (Ms. Nunn, 1621 Eubanks Road, Chapel Hill, NC 27516; identified as N1) for analysis of the constituents listed in 40 CFR Part 258 (15A NCAC 13B .1600) Appendix I. TRC will prepare a digital version (Adobe Acrobat or functional equivalent) of the report and provide it to OCSWM and to NCDEQ. Additionally, all EDDs will be compiled and submitted to the state’s EQUIS database per NCDEQ requirements. This action was previously covered under the regulatory task. OWNER’S RESPONSIBILITIES. Owner shall provide access to TRC personnel to enter the landfill during normal operating hours, or on other days or times as mutually agreed, in order to provide the field services associated with the tasks outlined above. Task-03 Stormwater Analytical TRC receive the analytical charge from Eurofins and bill OCSWM for the amount charged. It is assumed that PFAS analysis may also be required for the annual sampling event. The additional fee has been added to the costing proposal below. DocuSign Envelope ID: 33C094A0-39E5-4FF7-B854-69713E181C21 Mr. Bruce Woody June 9, 2023 Page 4 Task-04 Environmental Compliance TRC proposes to respond to unanticipated issues concerning environmental regulatory compliance that may arise at the South Landfill during the prescribed service period. TRC will prepare one printed copy of any correspondence that may arise in connection with this task, which will be delivered to OCSWM. TRC will also prepare a digital version (Adobe Acrobat or functional equivalent) of each correspondence and provide it to OCSWM and to NCDEQ. Ꚛ Ꚛ Ꚛ COMPENSATION. TRC shall be compensated for performing the above Services as follows. Task Fee Fee structure 01 GW sampling event 59 $18,900 lump sum 02 GW sampling event 60 $19,500 lump sum 03 Stormwater analytical $2,100 time & materials 04 Regulatory Compliance $4,900 time & materials TOTAL NOT TO EXCEED FEE: $45,400 Ꚛ Ꚛ Ꚛ In order to authorize initiation of the proposed work, please sign and date this proposal, and return a copy to our office. Meanwhile, if you have any questions, please contact me by e-mail (sjarvah@trccompanies.com) or telephone (919.345.4177). cc: Mr. Tom Laughlin (TRC - Environmental Services Division) Mr. Steve Gandy (TRC - Waste Resource Engineering) Ms. Bilgen Yuncu (TRC – Project Manager/Professional Engineer) Ms. Deborah Coakley (TRC – Project Manager) DocuSign Envelope ID: 33C094A0-39E5-4FF7-B854-69713E181C21 Mr. Bruce Woody June 9, 2023 Page 5 AUTHORIZATION TO PROCEED [GROUNDWATER MONITORING AND CORRECTIVE ACTION PROGRAMS: FY23-24] SOUTH LANDFILL Orange County Solid Waste Management date THIS INSTRUMENT HAS BEEN PRE-AUDITED IN THE MANNER REQUIRED BY THE LOCAL GOVERNMENT BUDGET AND FISCAL CONTROL ACT: Office of the Chief Financial Officer date THIS SCOPE OF WORK IS SUBMITTED PURSUANT TO THE TERMS OF THE AGREEMENT DATED FEBRUARY 22, 2017 BETWEEN TRC ENGINEERS, INC., AND ORANGE COUNTY. Thomas R. Laughlin date TRC - Senior Program Manager DocuSign Envelope ID: 33C094A0-39E5-4FF7-B854-69713E181C21 7/25/2023 7/25/2023 7/25/2023