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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord California 94520 <br /> (510) 686 9600 FAX (510) 686 9689 <br /> Won Geosclence Client Project ID Mobil #04 NP4/30-0140-02 Sampled May 18, 1992 <br /> 5870 Stoneridge Drive, Suite 6 Matrb(Descnpt Water Relogged May 19, 1992 <br /> Pleasanton, CA 94588 Analysis Method EPA 3510/8015 Extracted May 20, 1992 <br /> Attention Cyril Yong First Sample# #2050799 Analyzed May 20, 1992 A <br /> Reported May 21, 1992 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS (EPA 8015) <br /> Sample Sample High B P <br /> Number Description Hydrocarbons <br /> pg/L <br /> (ppb) <br /> #2450799 E-1 N D <br /> Detection Urnits. 50 <br /> High Boiling Point Hydrocarbons are quantitated against a diesel fuel standard <br /> Analytes reported as N 0 were not present above the stated limrt of detection <br /> 06EQUOIA ANALYTICAL <br /> Scoh��Chieffo <br /> Project Manager �5`-" =Lr `'' <br />