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SEQUOIA INALYTICAL <br /> 1900 Bates Avenue - Suite LM - Concord, California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> Kaprealian Engineering, Inc. Client Project ID: Unocal/7303 Pacific Ave., Stockton Sampled: Dec 30, 1991 <br /> P.O. Box 996 Matrix Descript: Water Received: Dec 30, 1991 <br /> Benicia, CA 94510 Analysis Method: EPA 5030/8015/8020 Analyzed: Jan 2, 1992 <br /> Attention: Mardo Kaprealian, P.E. First Sample#: 112-1160 Reported: Jan 15, 1992 <br /> X <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/L Mg/L pg/L pg/L pg/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 112-1160 MWI N.D. N.D. N.D. N.D. N.D. <br /> 112-1161 MW2 N.D. N.D. N.D. N.D. N.D. <br /> 112-1162 MW3 N.D. N.D. N.D. N.D. N.D. <br /> 112-1163 MW4 N.D. N.D. N.D. N.D. N.D. <br /> Method Detection Limits: 30 0.30 0.30 0.30 0.30 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard. <br /> SEQUOIA ANALYTICAL <br /> V---)�ANC-q <br /> Belinda C.Vega I <br /> Laboratory Director 1121160XEl <1> <br /> A <br />