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Site Characterization and Son 1[emedialion Plan_ 7500 Tr"est Elerenth Street, Trace, .A Page 17 <br /> rf- <br /> f _ , groundwater are being recovered. <br /> Sample Analysis <br /> Each groundwater water sample will be analyzed for the following suite of <br /> f ? analytes. <br /> Anal e Method of Analysis <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 /> Disposal of Purge Water <br /> 9 <br /> - When the results of the groundwater analyses are available, the concentration <br /> of contaminants, if any, in the purge water held in the 50-gallon drums will be <br /> determined_ Clean water will be disposed to the municipal sewer. <br /> - Contaminated water will be decanted into a closed, 1,000-gallon tank situated <br /> on the 7500 West Eleventh Street property and held there until a sufficient <br /> . i amount has accumulated to render economical its disposal at a permitted <br /> treatment facility. <br /> TREATMENT OF STOCKPILED SOIL <br /> i Stockpile No. 2 contains an estimated 650 cubic yards of hydrocarbon-affected <br /> l soil that was excavated from beneath the pump island area of the former <br /> Olympian Service Station. The following sections of this Work Plan are <br /> concerned with the treatment and disposition of that material. <br /> - J <br /> It is proposed to treat the stockpiled soil by on-site aeration and, as necessary, <br /> by bioremediation. Soil treatment will be initiated at the same time that the site <br /> characterization program is begun. <br /> ..s <br /> sic <br /> � ,I <br />