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�.� <br /> }YJ <br /> laws and regulations, hydrestatic tests were conducted at the <br /> 4--IN end of December, 1985, and as a result of this testing, a leak <br /> }, gas suspected in the hest tank . The volume of gasoline which <br /> leaked .was considered to be small, based on inventcry records <br /> 1A <br /> and subsequent soil sampling data ( Anheuser-Busch, personal <br /> communi,:ation) . <br /> a Soil sampling in the vicinity of the tanks was performed <br /> following hydrostatic testing. The analytical results are <br /> >)xeserted in Table 4-1 . The results suggested elevated levels <br /> of miscellaneous hydrocarbons Ander both tanks through a depth <br /> of 28 ft . When the leak was detected, abandonment and <br /> 1 excavation procedures began. Gasoline was pumped cut of the <br /> VA west tank prior to excavation. The east tank was opened and <br /> emptied of sand (approximately 20 cubic yards ) while still in <br /> place. The sand from the east tank was spread evenly in a <br /> j thin layer on the northwest edge of the property per San <br /> Joaquin air ?olluticn Control District (A?CD) requirements to <br /> enhance volatilization and bicdegradation of residual <br /> volatiles . Both tanks were cleaned i,nd scrapped offsite. <br /> The width of the excavation was 14 ft, with additional <br /> dimensions shown approximately in Figure 2-2 . - The dimensions <br /> of the soil contamination removal area were '14 ft by 15 ft by <br /> 15 ft. Excavation was accomplished using a Lackhce. A total <br /> 6 <br /> estimated soil volume of 450 cubic yarns was removed from the <br /> area. The contaminated soil ( est .mated volume of about 120 <br /> cubic yards ) was deposited in the" northwest part of the <br /> property as per San Joaquin AFCD requirements. The- resulting <br /> ! ' pit 'was filled in with clean, compacted, crushed rock and was <br /> ultimately paved over with asphalt . <br /> m: <br /> 3 , <br /> ,.. 2 <br /> `'�Ird <br />