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(ORI 'IN <br /> following compounds using US Environmental Protection Agency (EPA) laboratory <br /> methods, in milligrams per kilogram (mg/kg) <br />' Method Compounds Detection Limit* <br /> (mg/kg) <br /> EPA Total petroleum hydrocarbons <br /> Modified analyzed as gasoline 01 <br /> 8015 <br />' Aromatic hydrocarbons including <br /> benzene, toluene, and 0 005 <br /> ethylbenzene <br /> EPA Total xylenes 0 015 <br /> 8260 <br />' MTBE 0 005 <br /> * Detection limits may vary because of matrix interference <br /> 1 <br /> 1 <br />' S\BFS\STOCKTON\LTR\LTR004 DOC 7/7/00 <br />