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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (415) 686-9600 0 FAX (415) 686-9689 <br /> Kaprealian Engineering, Inc Client Project ID Unocal, 7303 Pacific Ave, Stockton Sampled Jun 26, 1991 <br /> P O Box 996 Matrix Descript Water Received Jun 26, 1991 <br /> Benicia, CA 94510 Analysis Method EPA 3510/8015 Extracted Jul 1, 1991 <br /> Attention Mardo Kaprealian, P E First Sample# 106-0740 C Analyzed Jul 2, 1991 <br /> Reported Jul 11, 1991 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS (EPA 8015) <br /> Sample Sample High B P <br /> Number Description Hydrocarbons <br /> pg/L <br /> (ppb) <br /> 106-0740 C MW1 290 <br /> Detection Limits 50 <br /> High Boiling Point Hydrocarbons are quantitated against a diesel fuel standard <br /> Analytes reported as N D were not present above the stated lima of detection <br /> &UOIA ANALYTICAL Please Note <br /> The above sample does not appear to contain diesel <br /> �c <br /> Belinda C Vega <br /> Laboratory Director 1060740 KEI <4> <br />