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SEQUOIA ANALYTICAL <br /> 1990 Sates Avenue • Suite LM • Concord California 94520 r ^ <br /> (510) 686 9600 FAX (510) 686 9689 <br /> *Alton Geoscience Client Project ID Mobd #04-NP4/ 30-0140-02 Sampled May 18, 1992 <br /> 5870 Stoneridge Drive, Sulte 6 Sample Descript Water, E-1 Recehred May 18, 1992 <br /> Pleasanton, CA 94588 Analysis Method EPA 5030/8015/8024 Anajyzed May 18, 1992, <br /> Attention Cyril Yong Lab Number 205-0799 v A Reported May 19,' 19921 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS WITH BTEX DISTINCTION (EPA 8015/8020) <br /> Analyte Detection Lima Sample Results <br /> Mg/L (ppb) Mg/L (ppb) <br /> Low to Medium Boiling Point Hydrocarbons 30 N D <br /> Benzene 030 N D <br /> Toluene 030 N D <br /> Ethyl Benzene 030 N D <br /> Xylenes 030 N D <br /> I <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> iSEQUOIA ANALYTICAL <br /> 40A*ScChieffo <br /> 2os�7ss ALT < <br /> Project Manager <br />