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DocuSign Envelope ID: D3F23F86-A740-4F6C-8F1F-3ED35AB81D1C <br /> Mr. Bruce Woody <br /> May 9, 2019 <br /> Page 6of12 <br /> SOUTH LANDFILL <br /> Task R00592-2175-01 <br /> Groundwater Sampling Event 51 (Event 2019 S2) <br /> DAA proposes to conduct groundwater sampling event 51 at the Orange County Regional Landfill — South <br /> Facility during November,2079. <br /> DAA shall coordinate field and laboratory services, obtain groundwater samples, review sampling <br /> documentation received from groundwater sampling personnel, chemically analyze groundwater samples <br /> (ENCO), validate analytical data provided by the contracted laboratory, update historical summary tables, <br /> and prepare a report suitable for direct submission to NC-DEQ. <br /> During the subject sampling event, the laboratory will: <br /> ■ analyze samples obtained from eleven compliance wells (6801-MW101, 6801-MW102S, 6801- <br /> MW102DR, 6801-MW103S, 6801-MW103D, 6801-MW104, 6801-MW106, 6801-MW107, 6801- <br /> MW11OS, 6801-MW111, 6801-MW112) for the constituents listed in Appendix <br /> ■ analyze samples obtained from one compliance well (6801-MW105) for the constituents listed in <br /> Appendix II <br /> ■ analyze additional samples obtained from well 6801-MW110S for constituents required by <br /> regulations for monitoring of C&D landfills (manganese, iron, mercury, chloride, sulfate, <br /> tetrahydrofuran, total dissolved solids, alkalinity) (well 6801-MW110S is associated with the <br /> monitoring programs for both the active C&D landfill and South sanitary landfill) <br /> ■ analyze samples obtained from well 6801-MW110D for total arsenic <br /> ■ analyze additional samples obtained from well 6801-MW110S for quality control parameters <br /> ■ analyze one trip blank for quality control parameters <br /> In addition to the above tasks, DAA plans to coordinate with field personnel to obtain leachate samples from <br /> the South Facility, and chemically analyze the samples for the constituents listed in Appendix I, plus BOD, <br /> COD, manganese, mercury, nitrate, sulfate, and phosphate. <br /> DAA will prepare one printed copy of the report, which will be delivered to OCSWM. DAA will also prepare a <br /> digital version (Adobe Acrobat or functional equivalent) of the report and provide it to OCSWM and to NC- <br /> DEQ. <br /> Blacksburg, VA •Charlottesville, VA •Hampton Roads, VA •Richmond, VA •Manassas, VA, <br /> Fayetteville,NC•Raleigh,NC <br />