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Revised Workplan-Additional Site Investigation for PFAS BSK Project E20-016-01F <br /> Stockton Metropolitan Airport(SCK) March 1, 2023 <br /> Stockton,California Page 12 <br /> Text Table 2. Tentative Summary of First Phase Activities and Samples by PRA <br /> Vertical Number of Number Duplicate GW <br /> PFAS DPT GW Permanent Soil of GW GW • • <br /> BoringsPRA Use <br /> Borings be Analyzed to be to be to be <br /> -JIL Lnalyzed Analyzed Analyzed <br /> ------------ <br /> GW samples, <br /> along with <br /> QA/QC and <br /> 1.Wash Former 52 duplicate will <br /> Rack FTA 6 0 1 (maximum) 1 1 1 be collected <br /> following <br /> development <br /> of the MWs. <br /> GW samples, <br /> along with <br /> QA/QC and <br /> 2.Former Former 72 duplicate will <br /> Runway FTA 8 0 2 (maximum) 2 2 1 be collected <br /> following <br /> development <br /> of the MWs. <br /> GW samples, <br /> along with <br /> 3.Atlantic QA/QC and <br /> Aviation Former 0 0 1 4 1 1 1 duplicate will <br /> Hangar <br /> FTA be collected <br /> following <br /> development <br /> of the MWs. <br /> (max.) J <br /> Note:GW QA/QC samples include:Field Blank,and Trip Blank.Equipment rinsate samples will also be collected at the end of the day for each <br /> day of GW sampling where reusable equipment was used and a GW sample was collected. <br /> Abbreviations <br /> PRA=Potential Release Area MW=Monitoring Well <br /> FTA=Fire Training Area <br /> GW=Groundwater <br /> QA/QC=Quality Assurance/Quality Control <br /> 6. Once the first phase of the investigation is complete, the raw data from that work will be <br /> evaluated for the second phase of the investigation. A progress report will be prepared at the <br /> request of the CVRWCB in their letter titled "Response to Additional PFAS Site Investigation Work <br /> Plan Stockton Municipal Airport(T10000012778) 5000 S.Airoport[sic] Way,Stockton, California" <br /> dated January 13, 2023 and will include: <br /> • tabulated results of PFAS concentrations in soil and groundwater, <br /> S=i<,, <br />