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.r <br /> k <br /> j 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 Oct 26, 1990 <br /> P O Box 996 Matrix Descript Water Received Oct 29, 1990 <br /> Benicia, CA 94510 Analysis Method EPA 5030/8015/8020 Analyzed Oct 30, 1990 <br /> Attention Mardo Kaprealian, P E First Sample# 010-0732 A-B Reported Nov 7, 1990 <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 /> Ng/L pg/L p9/L pg/L Ng/L <br /> (Ppb) (ppb) (ppb) (ppb) (ppb) <br /> 010-0732 A-B Mw-1 N D N D N D N D N D <br /> 010-0733 A-B Mw-2 N D N D N D N D N D <br /> 010-0734 A-B MW-3 220 76 067 ND 23 <br /> 010-0735 A-B Mw-4 NO ND ND ND ND <br /> 0 <br /> Detection Limits 30 0.30 030 030 030 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> &QUOIA ANALYTICAL <br /> Z�W(- <br /> Belinda <br /> C Vega <br /> Laboratory Director 100732 KEI <1> <br />