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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> ERM-West (Walnut Creek) Client Project ID #1572 04 Sampled Apr 3, 1992 <br /> 1777 Botelho Dr , Suite 260 Matrix Descript Water Received Apr 3, 1992 <br /> Walnut Creek, CA 94596 Anaiysis Method EPA 5030/8015/8020 Analyzed 4/14-4/15/92 <br /> Attention Bruce Pfasf First Sample# 204-0109 Reported Apr 22, 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 /> ug/L ug/L ug/L ug/L ug/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 204-0109 MW-3A N D 082 069 052 1 8 <br /> 204-0110 Trip Blank N D N D N D N D N D <br /> 204-0111 MW-4A N D N D N D N D N D <br /> 204-0112 Feld Blank N D N D <br /> ND ND ND <br /> 204-0113 Rinsate N D N D N D N D N D <br /> 1 <br /> Detection Limits. 30 a [ 030 0 30 0.30 0.30 <br /> Low to Medium Boding Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> f SEQUOIA ANALYTICAL <br /> Kenneth K F Lee 2040108 ERM 42> <br /> Laboratory Manager <br />