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1 <br /> Chemical analysis was conducted at a California Department of Health Services(DHS) certified <br /> hazardous waste laboratory, as requested for underground storage tank removal Soil sample 3, 4, <br /> 5, 6, 7, 8, 9, 10, and 11 were tested for EPA Method 8020 Benzene,Toluene, Ethyftw=ene, <br /> Total Xylenes, MTBE, EPA Method 8015 Total Petroleum Hydrocarbons Gasoline and Diesel, <br />' and EPA Method 7420 Lead Table 1 shows a summary of the chemical analysis results For <br /> more detailed information on sample locations and chemical analysis, please refer to the attached <br /> site plan and the certified anaPpcal report <br /> 1 <br /> Table 1 <br />' Soil Samples <br /> August 2, 1996 <br /> UNOLE DEPTH BENZEN LSE_NZE ]MTBE TOLUEN XYLENE TPE-G TM-D LFAD <br /> S-3 9' ND ND ND ND ND ND 3300 2 <br />' S4 9' ND ND ND ND ND ND 38M 33 <br /> S-5 9' ND ND ND ND ND ND ND 4 <br /> S-6 10, ND ND ND ND ND ND 8U 9 <br />' S-7 10, ND ND ND ND ND ND 3300 ND <br /> S4 10, ND ND ND ND ND ND 980 4 <br /> S-9 1' ND ND ND ND 0.2 ND 160 28 <br /> S-10 1' ND ND ND ND 1.6 ND 1100 35 <br /> 5-11 1.5' ND 0.6 ND ND 0.9 ND 720 7 <br />' ND = Not Detected at or above the Detection Limit Reported (DLR). <br /> DLR= Detection Limit for Reporting Purposes. <br /> Parameters are expressed as mg/kg (Milligrams per Kilogram) = ppm (Paris per MiDion) <br /> The results m the above table indicate that the soil samples taken show the presence of petroleum <br /> hydrocarbons The soil sample analysis indicate that the petroleum hydrocarbons found m low <br /> concentrations in the tank excavation are primarily in the form of diesel contaminants or diesel <br /> range The diesel impacted soil concentrations in the above table are an indication that small <br /> amounts of diesel fuel releases occurred dunng the transfer of diesel fuel from a tanker truck to <br /> the 10,000 gallon diesel underground storage tank <br /> 3 <br />