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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 Ot00 <br /> IDPOS Services Client Project Ib Unocal#6981,4707 Pacific Ave,Stockton Sampled Jul 25-26, 1994 <br /> 2401 Stanwell Dr, Ste 400 Matrix Descript Water Received Jul 26, 1994 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Aug 10, 1994 <br /> Attention Avo Avedessian First Sample # 407-1480 <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 /> (OC Limits <br /> 70-130%) <br /> 407-1480 MW1 -- 10 8/8/94 HP-2 109 <br /> 407-1481 MW4 Gasoline 10 8/4/94 HP-2 117 <br /> Unidentified <br /> 407-1482 MW6 Hydrocarbons 10 8/4/94 HP-2 106 <br /> <C6* <br /> 407-1483 MW7 Gasoline 20 8/4/94 HP-2 107 <br /> 407-1484 MW8 Gasoline 10 8/4/94 HP-2 106 <br /> 407-1485 MW9 -- 10 8/4/94 HP-2 100 <br /> 407-1486 MW10 -- 10 8/4/94 HP-2 98 <br /> 407-1487 MW11 -- 10 8/4/94 HP-2 99 <br /> 407-1488 MW12 -- 10 8/4/94 HP-4 90 <br /> 407-1489 MW13 -- 10 8/4/94 HP-4 92 <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> *"Unidentifed Hydrocarbons <C6'refers to unidentified peaks in the EPA 8010 range <br /> ignature on Fila <br /> Alan B Kemp <br /> Project Manager <br /> 4071480 MPD <2> <br />