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Mr . Harlan Knoll <br /> October 15 , 1987 <br /> Page 4 <br /> Table 1. Analytical Results of September 25 , 1987 , <br /> Soil Sample, ARCO Station 595 <br /> Soil sample Detection Designated <br /> Constituent 99H-1 limit levela <br /> EPAb 8010 ; solvents <0 . 001 0. 001 Variablec <br /> EPA 8015 , modified <br /> total petroleum fuel <br /> hydrocarbons <10 10 NE <br /> EPA 8020 <br /> Benzene <0 . 001 0 . 001 0. 7 <br /> Toluene <0. 001 0 . 001 100 <br /> Xylene <0 . 001 0 . 001 620 <br /> EPA 8080 <br /> PCBs (only) <0.1 0 .1 0 . 00079 <br /> NOTE: All results shown in milligrams per kilogram. <br /> aCalifornia Regional Water Quality Control Board, Central Valley <br /> Region designated level in soil for the protection of groundwater <br /> bquality. <br /> U.S. Environmental Protection Agency (EPA) Method . <br /> cVariable because different types of solvents tested by EPA <br /> Method 8010 . <br />