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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> ,!D1900 Bates Avenue,Suite L Concord CA 94520 (510) 686 9600 FAX(510) 686 9689 <br /> %IIS Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> O <br /> MPDS Services Client Project ID Unocal#0187 437 E Miner Ave,Stockton Sampled Nov 17, 1994 <br /> 2401 Stanwell Dr, Ste 400 Matrix Descript Water Received Nov 17, 1994 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Dec 5, 1994 <br /> Attention Avo Avedessian First Sample # 411-1336 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> pg/L pg/L pg/L ug/L p9/L <br /> 411-1336 U1 5,000 540 12 250 840 <br /> 411-1337 U2 360 88 ND 38 45 <br /> 411-1338 U3 42,000 9,600 1,800 2,000 4,600 <br /> Detection Limits 50 050 050 050 050 <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 /> Oignature on File <br /> Alan B Kemp <br /> Project Manager <br /> 4111336 MPD <1> <br />