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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 41�— 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 998-9600 FAX(510)998-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (9t6) 921.960() FAX(916)921-01()0 <br /> 15bS Services 'Client Project ID: Unocal#0788,8203 E. 1 Ith St.,Tracy Sampled: Oct 10, 19957": <br /> : <br /> 2401 Stanwell Dr., Ste. 300 Matrix Descript: Water Received: Oct 10, 1995:: <br /> Concord, CA 94520 Analysis Method. EPA 5030/8015 Mod./8020 Reported: Oct 25, 1995'.:: <br /> ..:'Attention: Sarkis Karkarian First Sample 510-0832 <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 yg/L pg/L <br /> 510-0832 U ND ND ND ND ND <br /> 510-0833 U 2 ND ND ND ND ND <br /> 510-0834 U 3 ND ND ND ND ND <br /> 510-0835 U5 ND ND ND ND ND <br /> 510-0836 U 6 ND ND ND ND ND <br /> 510-0837 U 7 ND ND ND ND ND <br /> 510-0838 U 8 ND ND ND ND ND <br /> 510-0839 ES 1 ND ND ND ND ND <br /> 510-0840 ES 2 ND ND ND ND ND <br /> 510-0841 ES ND ND ND ND ND <br /> 15etection Limits: so 0.50 0.50 0.50 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 /> SEQUOIA ANALYTICAL, #1271 <br /> Qnature on File <br /> Alan B. Kemp <br /> Project Manager <br /> 5100832.MPD <1> <br />