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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive 9 Redwood City, CA 94063 <br /> (415) 364-9600 - FAX (415) 364-9233 <br /> ............. . .............................................................. <br /> .... . .... . <br /> ................. ............ .............. <br /> ................. .......... <br /> :..:ERM-West Client Project ID: 4004 El Dorado, Stockton Sampled. Nov 13, 1990.` <br /> 2001 P Street, Suite 200Matrix Descript: Sol[ Received: Nov 13, 1990:: <br /> Sacramento, CA 95814-5213 Analysis Method: EPA 5030/8015/8020 Analyzed: Nov 13, 1990:.,: <br /> :'Attention. Jim Quinn First Sample#: 011-9093 Reppirto: Nov 20, 1990L...r. <br /> ................. ...... <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 /> mg/kg mg/kg mg/kg mg/kg mg/kg <br /> (ppm) (ppm) (ppm) (ppm) (ppm) <br /> 011-9093 SP5, 4A-4D 12 N.D. N.D. N.D. N.D. <br /> Detection Limits: 5.0 0.025 0.025 0.025 0.025 <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. Because matrix effects and/or other factors <br /> required additional Sample dilution,detection limits for this Sample have been raised. <br /> SEQUOIA ANALYTICAL Please Note: <br /> The above sample does not appear to contain gasoline. <br /> Malle A. McSi nevy <br /> Project Manager 119M.ERM <5> <br />