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SAP/QAPP Addendum <br /> Lodi-125 N Stockton <br /> Final <br /> March 24,2025 <br /> buildings to identify quantities and locations of suspected ACM and will follow guidelines and methods <br /> established in the Asbestos Hazard Emergency Response Act (AHERA) (40 CFR 763) for use in schools. <br /> Roofing,ceiling and wall materials are the primary areas of inspection at the buildings.The Toeroek Team will <br /> patch all sampling areas;however,the team cannot guarantee that the temporary repaired sample locations will <br /> be weather-tight.Additional details regarding asbestos-containing building materials sampling are discussed in <br /> Section 6.4.1. <br /> Suspect LBP that could present human health risk during renovation activities will be evaluated via XRF <br /> screening.XRF screening is the recommended method to determine content of lead in paint.If XRF screening <br /> results are within the inconclusive range of the instrument,paint chip samples will be collected for laboratory <br /> analysis.Additional details regarding the LBP screening are discussed in Section 6.4.2. <br /> The buildings will be inspected for caulk that may contain PCBs.Because PCBs are known to have been used <br /> in some caulk products to impart flexibility from the 1950s through approximately 1978,caulk samples will be <br /> collected for PCB analysis based on the apparent age of the caulk.The Toeroek Team will patch all sampling <br /> areas;however,the team cannot guarantee that the temporary repaired sample locations will be weather-tight. <br /> Additional details regarding PCB building materials sampling are discussed in Section 6.4.3. <br /> 4.3 Soil Sampling <br /> Subsurface soil samples will be collected to assess whether contamination from previous MGP activities and <br /> from historical USTs are present on the Site. <br /> 4.3.1 Historical Man ufacturedGas Plan t Soil Sampling <br /> Soil borings will be advanced to 5 feet bgs at seven boring locations on the Site to collect soil samples (Figure <br /> 3).The soil boring locations will be spaced inside and adjacent to the approximate location of the historical <br /> MGP (Stantec,Inc.2023).These will further delineate previously detected lead and arsenic exceedances in the <br /> MGP area and inform soil handling and disposal procedures during redevelopment. Subsurface soil samples will <br /> be collected at the following intervals: 0.5 to 1 feet bgs,2 to 3 feet bgs,and 3 to 5 feet bgs. Soil samples will be <br /> analyzed for arsenic and lead (EPA Method 6010),TPH (EPA Method 8015M [TPH-g,TPH-d,and TPH-mo]), <br /> and PAHs (EPA Method 8270-SIM). <br /> 40 <br />