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Sequoia 680 Chesapeake Dave Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> irTN 1900 Bates Avenue,Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> Iwo Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Q <br /> MPDS Services Client Project ID Unocal#0187,437 E Miner Ave,Stockton Sampled Feb 17, 1995 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descnpt Water Received Feb 17, 1995 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Mar 7, 1995 <br /> Attention Sarkis Karkarian First Sample # 502-1294 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> yg/L pg/L erg/L pg/L Mcg/L <br /> 502-1294 U1 3,700 190 19 73 210 <br /> 502-1295 U2 120 49 ND 059 1 8 <br /> 502-1296 U3 47,000 9,100 2,100 1,600 5,300 <br />• <br /> Detection Linfits so 050 050 050 0.50 <br /> Total Purgeable Petroleum Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as ND were not present above the stated limit of detection <br /> *signature <br /> SEQUOIA ANALYTICAL, #1271 <br /> on File <br /> Alan B Kemp <br /> Project Manager <br /> 5021294 MPD <1> <br />