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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> OFIRM-West (Walnut Creek) C1i6t'Fro)ect Ib #1572 01, Stockton baiina,e Jun 3, 1992 <br /> 777 Botelho Dr, Suite 260 Matrix Descript Water Received Jun 3, 1992 <br /> Walnut Creek, CA 94596 Analysis Method EPA 3510/8015 Extracted Jun 10, 1992 <br /> Attention Bruce Pfaff First Sample# 206-0097 Analyzed 6/16-6/17/92 <br /> Reported Jun 19, 1992 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS (EPA 8015) <br /> Sample Sample High B P. <br /> Number Description Hydrocarbons <br /> Ng/L <br /> (ppb) <br /> 206-0097 MW-1A 2,500 <br /> 206-0098 MW-2A 200 <br /> 206-0099 MW-0A N D <br /> 206-0100 MW-4A N D <br /> 206-0101 Trip Blank N D <br /> Detection Limits- 50 <br /> High Boiling Point Hydrocarbons are quantitated against a diesel fuel standard <br /> Analytea reported as N D were not present above the stated limit of detection <br /> OSEQUOIA ANALYTICAL <br /> colt A Chleffo <br /> 2060092 ERM <4> <br /> Project Manager <br />