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24'Novemb& 1997 <br /> AGE-NC Project No. 97-0351 - <br /> Page,5 of 5 . <br /> 10.. Log borings in accordance with the"Unified Soi Classification System. .. <br /> 11.'Collect a ground.water samples from the probe borings. The ground water sample will be <br /> collected using a Geoprobe water sampling assembly. The samples will be collected in 40- <br /> - ml, EPA approved VOA vials using a.Geoprob water sampling assembly. . <br /> .12. Backfill each probe boring using a concrete slu through a tremie pipe, through the entire, <br /> depth of the probe boring: <br /> 13. Selected soil samples and groundwater sam les..will be analyzed for-.total petroleum <br /> hydrocarbons quantified as gasoline (TPH-g), olatile aromatics (benzene, toluene, ethyl <br /> benzene and.total xylenes:_'BTE&X) and m t_hyl-tert-butyl ether (MTBE) and other <br /> oxygenated"fuel additives tertiary butyl alcohol (TBA),di-isopropyl ether (DIPE), ethyl . <br /> tertiary butyl ether(ETBE) and tertiary amyl me thyl ether(TAME) in accordance with EPA <br /> methods 8015m/5030 and--8020/602 and 8260/8240. If field observations indicate that other <br /> petroleum-hydrocarbons,are present, additionalanalysismay.benecessary. <br /> 4.2. REPORTING <br /> A report detailing the results of the investigation will be prepared. If appropriate the report Will <br /> formatted as a.Closure Summary Report (CSR). The eport will be in a format acceptable to the <br /> PHS-EHD and CVRWQCB'. The report,will be reviewed-and signed by a California Registered <br /> Geologist. <br /> Advanced GeoEnvironmental,Inc. <br />