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j9et <br /> L <br /> i <br /> laws and regulations, hydrostatic tests were cend:hcter3 at the <br /> end of December,ber, 1986, and <br /> as a result of this testing, a leak <br /> w� <br /> was %'in the westto k. The volume of a- ; <br /> leaked s ol_ne wh±ch <br /> was considered to be small, based on inventory records <br /> and subsequent soil sampling data (=nheuser-Busch, personal <br /> i comnun_catio,n ) <br /> Soil sampling in the vicinity of the tanks was performed <br /> following hydrostatic testing. The analytical results are <br /> presented in Table 2-1 , <br /> i ' she results suggested elevated levels <br /> Of niscellaneous hydrocarbons under both tanks through a ,aeDt}; <br /> E of 28 €t . When the leak was detected, abandonment and <br /> ( ' excavation procedures beoan. Gasoline :as pumped o <br /> west tan:{ prior cut of the <br /> to excavation. The east tai <br /> } er�pti=_d of sand (approximately 20 cubic yards ) �whias leestiilned lf�in <br /> Place. The sand from the east tank was spread evenly in a <br /> thin layer on the northwest edge of the property pej. San <br /> Joaquin .fir Pollution Control District (::PCD) requ_rements to <br /> enhance volatilization�. o_atilization and biodegradation of residual <br /> 1z <br /> volatiles. Roth tanks were cleaned and scrapped offsite. <br /> ti The width of <br /> the excavation was 14 ft, with additional <br /> dimensions shown approximately in rigure 2-2. The dimensions <br /> of the soil contamination removal area were 14 ft by 15 ft b• <br /> 16 €t. Excavation was accorLhplished using a backhoe. A total <br /> pc� ; <br /> i� estimated soil volume of 450 cubicswas ' <br /> area. The contaminated soil (estimated volumeeofvabouted o1120he <br /> ;1 <br /> p� cubic yards ) was deposited in the northwest part of the <br /> property as Der San Joaquin APCD requirements. The resulting s <br /> Pit was z a <br /> filled in with clean, compacted, crushed rock and was <br /> ultimately paved over with asphalt. <br /> 4. <br /> 2� <br /> •ill l <br /> 2-3 <br />