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Mr. Himanshu Mehta, P. E. <br />21 November 2025 <br />Page 7 <br />o Map depicting ground -level methane emission concentrations. <br />o Estimated fugitive gas emissions for the landfill. Corresponding methane emissions <br />estimates will be provided in terms of gas flow (e.g., standard cubic feet per minute). <br />o Wellfield Action Plan and Emissions Mitigation Report <br />In addition to the data collected, we will request that SWDD provide the following information at <br />least two weeks prior to the start of our field activities: <br />• historic well construction logs for each landfill gas (LFG) well; <br />• topographic site -wide survey, in AutoCAD, with the location of each GCCS well, leachate <br />riser, or other LFG extraction device as well as piping schematics; <br />• copies of the past six months of data from GCCS monitoring and tuning events (in Excel - <br />compatible format, if possible); <br />• liquid level measurements within the landfill for the past six months, if available; <br />• gas generation or other GCCS performance reports (e.g., flare operating records); and <br />• operation and maintenance reports for routine repairs and maintenance and repairs to the <br />GCCS. <br />In addition to these services, Geosyntec's field personnel will meet with SWDD staff to obtain a <br />better understanding of the current GCCS operational goals and challenges. This meeting may be <br />a part of the kickoff meeting and/or as anecdotal conversations during the wellfield inspection and <br />data collection. <br />Based on the assumption that the in -field assessment will need to start by the end of June, <br />Geosyntec is proposing to utilize subcontractors, B&M Excavating LLC and Sniffer, to perform <br />the field work. <br />Phase 6: Wellfield Evaluation <br />Geosyntec will provide an evaluation of the current well conditions in Segment 1, Segment 2 and <br />Cell 1 of Segment 3 based on the site investigation of Phase 5. This evaluation is intended to <br />identify potential issues with wells that are either damaged or non-functional and propose their <br />rehabilitation, replacement or removal for optimization purposes. Replacement or enhancement of <br />pumping system components will also be proposed as applicable. In addition, installation of newer <br />wells might also be proposed to optimize performance. The evaluation would also include the <br />analysis of well influence areas to identify if the GCCS wellfield may benefit from a denser <br />configuration. <br />NCP2525235URC Partial Closure & GCCS Evaluation <br />engineers I scientists I innovators <br />