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4 August 1.995 <br /> AGE-NC-95-0162 <br /> Page 3 of 3 <br /> 5) Preserve soil samples in the lead brass'sleeve by covering both ends with Teflon or aluminum <br /> sheets, capping and sealing with tape. <br /> 6) Store samples-in a chilled container and transport to a State-certified laboratory for analysis. <br /> 7) Screen soil sample duplicates for the presence of volatile.organics.using a photo-ionization <br /> detector(PID) pre-calibrated to isobutylene. . <br /> 8) :,Log borings in accordance.with the.Unified Soil Classification-System:. . <br /> 9) Backfill each probing using a concrete slurry in the entire depth. <br /> 4.2. LABORATORY ANALYSIS _ <br /> Selected soil samples will be transmitted toca State-certified laboratory and analyzed for TPH-g and <br /> BTE&X in accordance with EPA methods 5030/8015m and 8020, respectively. <br /> 4.3. REPORTING <br /> A report detailing the results of the investigations will be prepared. The report will be in a format <br /> acceptable to the PHS-EHD and Central .Valley Regional' Water Quality Control Board <br /> (CVRWQCB). The report will be.reviewed and signed by.a Registered Geologist. <br /> i <br />