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a <br /> el) <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 9138 9600 FAX(510)988 9673 <br /> AWAnalytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> MPDS Services Client Project ID Unocal#6981,4707 Pacific Ave Stockton Sampled Jul 24, 1996 <br /> 2401 Stanwell Dr , Ste 300 Matrix Descript Water Received ed Jul 25, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Aug 7, 1996 <br /> Attention Jarrel Crider First Sample # 607-1873 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> Mg/L Mg/L pg/L pg/L pg/L <br /> 607-1873 VW-1 180 1 9 1 9 1 6 77 <br /> 607-1874 VW-2 78,000 510 3,100 540 24,000 <br /> 607-1875 VW-3 ND ND ND ND ND <br /> Detection Limits 50 050 0 50 050 050 <br /> Total Purgeable Petroleum Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as ND were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> esignature <br /> on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 6071873 MPD 1> <br />