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TABLE 2 - RESULTS OF LABORATORY ANALYSIS: GASOLINE TANK <br />STOCKTON UNIFIED SCHOOL DISTRICT TRANSPORTATION CENTER <br />HLI 00811 <br />Location' <br />Sample <br />Depth <br />(feet) <br />TPH-G <br />(mg/Kg) <br />Benzene <br />(ug/Kg) <br />Toluene <br />(ug/Kg) <br />Ethyl- <br />benzene <br />(ung) <br />Xylenes <br />(ug/Kg) <br />Total <br />Lead <br />(mg/Kg) <br />MBTE <br />(mg/Kg) <br />OVA <br />ppm' <br />Tank Samples: <br />Excavation <br />T-1 <br />633 <br />15 <br /><1 <br /><5 <br /><5 <br /><5 <br /><5 <br />NA <br /><5 <br />190 <br />634 <br />15 <br /><1 <br /><5 <br /><5 <br /><5 <br /><5 <br />NA <br /><5 <br />8 <br />635 <br />14 <br />691 <br /><150 <br /><150 <br /><150 <br />1,700 <br />NA <br /><150 <br />30 <br />T-2 <br />636 <br />13 <br /><1 <br /><5 <br /><5 <br /><5 <br /><5 <br />4.5 <br /><5 <br />2.4 <br />637 <br />13 <br /><1 <br /><5 <br /><5 <br /><5 <br /><5 <br />4.6 <br /><5 <br />1.2 <br />Stockpile: <br />S-1 to S-4 <br />605-8 <br />-- <br /><1 <br /><5 <br /><5 <br /><5 <br /><5 <br />4.9 <br /><5 <br />1.8-2.8 <br />S-5 to S-7 <br />609- <br />-- <br /><1 <br /><5 <br /><5 <br /><5 <br /><5 <br />6.8 <br /><5 <br />2.2 - 3.0 <br />611 <br />a . OVA measurements reflect container headspace vapor concentrations measured by Foxboro <br />128 Refer to Figure 3 for location of tank samples. <br />b . OVA. Meausrements reported as parts per million (ppm) as methane equivalent. Ambient levels <br />varried between 1.4 and 1.6 ppm. <br />TPH-G = Total Petroleum Hydrocarbons as gasoline <br />"<" = Laboratory Limit of Detection <br />NA = Not Analyzed <br />