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4D Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 98B 9600 FAX(510)988 9673 <br /> 1WAnalytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> *PDS Services Client Project ID Unocal#5098,5606 Pacific Ave, Stockton Sampled Sep 17, 1996 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received Sep 17, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Oct 11, 1996 <br /> Attention Jarrel Crider First Sample # 609-1455 <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 /> QC Limits <br /> 70-130 <br /> 609-1455 MW-10 -- 1 0 10/l/96 HP-2 111 <br /> 609-1456 MW-11 Gasoline 100 10/1/96 HP-2 101 <br /> 609-1457 MW-12 Gasoline 20 10/9/96 HP-2 114 <br /> 609-1458 MW-13 -- 1 0 10/1/96 HP-2 99 <br /> 609-1459 MW-14 -- 10 10/l/96 HP-2 95 <br /> 609-1460 MW-15 -- 10 10/1/96 HP-2 99 <br /> 609-1461 MW-16 -- 10 10/1/96 HP-2 106 <br /> 609-1462 MW-17 -- 10 10/1/96 HP-2 96 <br /> 609-1463 E=S-1 -- 10 10/4/96 HP-4 88 <br /> 609-1464 ES-2 -- 10 10/4/96 HP-4 88 <br /> 609-1465 ES-3 -- 10 10/4/96 HP-4 87 <br /> SEQUOIA ANALYTICAL, #1271 <br /> 0nature on Pile <br /> Alan B Kemp <br /> Project Manager Page 2 of 2 <br /> 6091455 MPD [2> <br />