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Y <br /> Sequoia680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Iwo <br /> PDS Services Client Project ID Unocal#0187,437 E Miner Ave, Stockton Sampled May 7, 1996 <br /> 2401 Stanwell Dr , Ste 300 Matrix Descript Water Received May 7, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported May 22, 1996 <br /> Attention Jarrel Crider First Sample # 605-0647 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> Fig/E pg/E Ng/L pg/E lig/L <br /> 605-0647 U1 660 40 67 18 13 <br /> 605-0648 U2 60 18 ND ND ND <br /> 605-0649 U3 36,000 4,600 1,800 2,400 10,000 <br /> 605-0650 U4 320 62 20 1 4 1 8 <br />. 605-0651 U5 ND ND ND ND ND <br /> 605-0652 U6 ND ND ND ND ND <br /> 605-0653 U7 290 34 26 20 1 5 <br /> 605-0654 U8 180 65 12 1 4 16 <br /> 605-0655 ES1 ND ND ND ND ND <br /> 605-0656 ES2 ND ND ND ND ND <br /> 605-0657 ES3 ND ND ND ND ND <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 /> 0.9nature on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 6050647 MPD <1> <br />