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I <br /> O.Y.S. -Stockton Plating Ina. <br /> October 10, 1991 <br /> CAIN, Page 7 <br /> f' reported the excavated soils had the characteristics of <br /> rubble/fill material. AEMC collected two soil samples (#06213A <br /> u. and #062133) from the west and east sides of the excavation, <br /> �. re3pectively. Laboratory analyses indicated: <br /> (A) significantly lower total lead concentrations (37.9 <br /> mg/kg and 21..5 mg/kg) . <br /> i <br /> (B) No detectable hydrocarbons in the west sample #06213A <br /> (a10 mg/kg) . <br /> (C) hydrocariOns in the diesel range detected in the east <br /> sample #66213B (940 mg/kg) . <br /> (D) verb low levels of aromatic volatile organics detected. <br /> P� <br /> AEMC concluded there was no evidence to suggeat the contents <br /> of the excavated.gasoline tank were the source of the <br /> contamination and recommended that SPY request county <br /> authorization to backfill the excavation (Underground Tank <br /> ?' Removal and Soil Sampling, by AEMC, October 6, 1926) . T e San <br /> joaquin County Environmental Health Department placed the <br /> investigation on hold until further notice. <br /> t <br /> �r On December 11, 1990, Oil Equipment Service, removed one <br /> 2,000-gallon underground -"usl atorage tank (TK1-90) from SPI <br /> (Figure 2) . The tank had contained leaded and unleaded gasoline. <br /> Janes Wack of Condor Earth Technologies, Inc. (Condor), was on <br /> ---,-- site-to_.collect-soil-samples-_.following_.the.-removal---of-.the--taAi4_ <br /> ____-- ----.__--- <br /> CONDOR - <br /> r 6! <br /> �J <br /> : <br />