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�.. <br /> 019 <br /> Sile('Jzazacterizatiort azld Soit.teniediation Plazz. 7500 TVesl Eleventh Street, Trace, e_,t. Page 15 <br /> from a depth of 5 ft. in each hole - and at 5 ft. intervals thereafter, to the bottom <br /> of the hole. However, the engineer may direct additional or alternate samples <br /> to be obtained if the conditions revealed by the boring indicate such to be <br /> appropriate. <br /> 1 Following sample recovery, each sample tube will be cleaned externally, its <br /> ends covered with Teflon foil and closed with tightly-fitting plastic caps <br /> secured with adhesiveless tape. Each sample tube will then be labeled-for <br /> identification, entered into chain-of-custody control and packed on chemical <br /> ice for transport to Chromalab's laboratory within 24 hours. <br /> Each soil sample submitted to the laboratory will be analyzed for the following <br /> suite of analytes. <br /> Anal3j Method of Anal sis <br /> Total Petroleum Hydrocarbons EPA Method 5030/8015 <br /> (quantified as Diesel) <br /> Total Petroleum Hydrocarbons EPA Method 8020A/8015 <br /> (quantified as Gasoline) <br /> Benzene EPA Method 8020 <br /> Toluene EPA Method 8020 <br /> Ethyl benzene EPA Method 8020 <br /> - Total Xylene Isomers EPA Method 8020 <br /> MTBE EPA Method 8260M <br /> jThe drill cuttings from the well borings will be retained in 50-gal steel drums. <br /> When full, the drums be will closed and placed in secure storage on the 7500 <br /> _ West Eleventh Street property until the results of analyses of soil and water <br /> samples are available. When the analytical results are obtained, the soil in the <br /> drums will be classified and, as appropriate, treated on-site, or used as clean fill <br /> when the former filling station site is redeveloped. <br /> Following construction, the wells will be developed by pumping and surging <br /> f and by bailing a minimum of 10 well volumes from each The development <br /> { water will be retained in 50-gal. steel drums and used as a source of water for <br /> adjusting the moisture content of stockpiled soil that is to be treated on-site <br /> l following procedures discussed later in this plan. <br /> In compliance with Sections 13700 through 13806 of the California Water <br /> ! <br /> sic <br />