Laserfiche WebLink
� y <br /> Nft11NN�lflNfl <br /> Mr. Roy Knight <br /> 13 November 1997 <br /> Page 4 <br /> • Benzene, Toluene,Ethylbenzene,Total Xylenes and Methyl Tertiary Butyl Ether <br /> (MTBE)using EPA Method 8020 <br /> • Total Petroleum Hydrocarbons as Gasoline TPH-G and Total Petroleum <br /> Hydrocarbons as Diesel(TPH-D)using EPA Method 8015 modified <br /> • Total Oil and Grease using EPA Method 5520B <br /> • Polynuclear Aromatics(PNAs)using EPA Method 8270 <br /> Total Oil and Grease and PNA analyses could not be conducted with the mobile laboratory and <br /> samples were transported back to Excelchem Environmental Labs of Roseville. <br /> Analvtical Results <br /> The laboratory results for each soil sample are summarized in Table 1 and presented in the <br /> following section. Analysis for PNAs was only conducted on samples collected from within the <br /> drain inlets. Samples collected from the lateral soil borings were not analyzed for PNAs due to <br /> the relative immobility of these constituents in soil. <br /> Drain Inlet 1 <br /> Samples collected from SB-1, SB-2, and SB-3 contained no detectable concentrations of Methyl <br /> Tertiary Butyl Ether (MTBE); Benzene, Toluene, Ethyl-benzene, and Total Xylenes (BTEX); <br /> Total Petroleum Hydrocarbons as Gasoline (TPH-G); and Total Petroleum Hydrocarbons as <br /> Diesel (TPH-D). The sample taken from SB-2 was collected at a depth of 9 feet below ground <br /> surface (bgs) and contained 76 mg/Kg of Total Oil and Grease, but Total Oil and Grease was not <br /> detected in SB-1 and SB-3. The sample collected from SB-1 did not contain detectable <br /> concentrations of PNAs. <br /> Drain Inlet 2 <br /> Samples collected from SB-4, SB-5, and SB-6 contained no detectable concentrations of MTBE, <br /> BTEX, TPH-G, and TPH-D. The sample collected from the center of Drain Inlet 2 (DI-2) at a <br /> depth of 9 feet bgs contained 180 mg/Kg of Total Oil and Grease, but the two lateral soil borings <br />