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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wjget 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 /> II'CS Services Client Project ID Unocal#0187 437 E Miner Ave Stockton Sampled Aug 4, 1997 <br /> p <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received Aug 5, 1997 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Aug 19, 1997 <br /> Attention Jarrel Crider First Sample # 708-0153 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Chromatogram DL Mult Date Instrument Surrogate <br /> Number Description Pattern Factor Analyzed ID Recovery, % <br /> CSC Limits <br /> 70-130 <br /> 708-0153 U-1 Discrete Peaks * 10 08/08/97 HP-2 71 <br /> 708-0154 U-2 Discrete Peaks* 1 0 08/08/97 HP-2 80 <br /> 708-0155 U-3 Gasoline 10 08/08/97 HP-2 103 <br /> 708-0156 U-4 -- 10 08/08/97 HP-2 78 <br /> 708-0157 U-5 -- 10 08/08/97 HP-2 78 <br /> 708-0158 U-6 -- 1 ❑ 08/08/97 HP-2 74 <br /> 708-0159 U-7 -- 10 08/08/97 HP-2 73 <br /> 708-0160 U-8 -- 10 08/08/97 HP-2 78 <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> 10 *"Discrete Peaks" refers to unidentified peaks in the EPA 8010 range <br /> nature an Fie <br /> Alan B Kemp <br /> Project Manager Page 2 of 2 <br /> 7080153 MPD <2> <br />