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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> ..'ERM-West Client Project ID: 4004 El Dorado, Stockton Sampled: Nov 15, 1990:", <br /> .';20011 P Street, Suite 200 <br /> Matrix Descript: Water Received: Nov 15, 19M."', <br /> "Sacramento, CA 95814-5213 Analysis Method: EPA 5030/8015/8020 Analyzed: Nov 15, 1990:' <br /> ..�:Attention: Jim Quinn <br /> First Sample 011-9106 Reported: Nov 20, 1990 <br /> .........1: "K, <br /> K <br /> ............ <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 /> yg/L ug/L pg/L pg/L pg/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 011-9106 MP6-GW 1,300 42 83 32 66 <br /> 011-9107 IVIP8-GW 100 1.7 5.2 1.1 5.5 <br /> Detection Limits: 30 0.30 0.30 0.30 0.30 <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 /> SEQUOIA ANALYTICAL Please Note: <br /> The above samples appear to contain gasoline. <br /> Maile A. Mc rimey <br /> Project Manager 119068.ERM <21> <br />