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e4 <br /> / SEQUOIA ANALYTICAL <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 Kapreallan, P E First Sample# 112-1160 Reported Jan 15, 1992 <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 /> pg/L. Ng/L pg/L. Ng/L 11g/L <br /> (Ppb) (ppb) (Ppb) (ppb) (ppb) <br /> 112-1160 MW1 ND ND ND ND ND <br /> 112-1161 MW2 ND ND ND ND ND <br /> 112-1162 MW3 ND ND ND ND ND <br /> 112-1153 MW4 N D N D N D N D N D <br /> I <br /> Method Detection Limits 30 030 0.30 030 030 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> ISSEQUOIA ANALYTICAL <br /> Belinda C Vega <br /> Laboratory Director 1121160 KEI <1> <br />