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` SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415) 364-9600 • FAX (415) 364-9233 <br /> Kaprealian Engineering, Inc Client Project ID Unocal x`5421 Stockton,7303 Pacific Sampled Dec 13, 1989 <br /> P O Box 996 Matrix Descript Soil Received Dec 14, 1989 <br /> Benicia, CA 94510 Analysis Method EPA 5030/8015/8020 Analyzed Dec 14, 1989 <br /> Attention Mardo Kaprealian, P E First Sample# 912-1730 Reported Dec 18, 1989 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS with BTEX DISTINCTION (EPA 8015/8020) <br /> Sample Sample Low/Medium B P Ethyl <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> mg/kg mg/kg mg/kg mg/kg mg/kg <br /> (ppm) (ppm) (ppm) (ppm) (ppm) <br /> 912-1730 SW4 (3) 11 N D N D N D N D <br /> 912-1731 Sw5 ND ND ND ND ND <br /> 912-1732 Sw6 ND ND ND ND ND <br /> Detection Limits 1.0 005 01 01 01 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL <br /> • )�C . <br /> Belinda C Vega <br /> Project Manager 9121730 KEi <2> <br />