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Corrective Action Plan Page 38 <br /> each hole and at 5ft intervals thereafter to the bottom of the hole The engineer in <br /> responsible charge of the work many direct additional or alternate samples to be obtained <br /> if the conditions revealed by the boring indicate such to be appropriate <br /> 1� Following sample recovery, each sample tube will be cleaned externally, its ends covered <br /> with aluminum foil and closed with tightly fitting plastic caps The caps will be secured <br /> with adhesiveless tape Each sample tube will then be labeled for identification, entered <br /> into chain-of-custody control and packed on chemical ice for transport to the laboratory <br /> within 24 hours <br /> Each soil sample submitted to the laboratory will be analyzed for the following suite of <br /> analytes <br /> Analyte Method of Analysis <br /> Total Petroleum Hydrocarbons EPA Method 5030/8015 <br /> (as Gasoline) <br /> Benzene EPA Method 8020 <br /> Toluene EPA Method 8020 <br /> Ethyl Benzene EPA Method 8020 <br /> Total Xylenes EPA Method 8020 <br /> Following construction, the wells will be developed by bailing approximately 10 well <br /> volumes from each The purge water and the drill cuttings will be retained in 50 gallon <br /> steel drums When full, the drums be will closed and placed in secure storage on the 152 <br /> East 15th property until the results of analyses of soil and water samples are available <br /> When the analytical results are obtained the soil and water in the drums will be classified <br /> and as appropriate, treated, disposed at a perrmtted facility, or removed from the site as <br /> clean material <br /> Permits for proposed wells NAV 9 and NAV 10 will be obtained from the SJCPHS The <br /> borings will be drilled and the wells constructed by a drilling contractor holding a C57 <br /> license issued by the California Contractors State License Board All soil and water <br /> samples will be analyzed by a laboratory certified to perform the specified analyses by the <br /> CEPA <br /> The locations of the new wells will be surveyed and the elevations of the top-of-casing and <br /> Y P g <br /> the cover frame of the well-head boxes of each will be determined relative to the datum <br /> that has been established at existing well ULT 7 <br />