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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> + 404 N W.get".1 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 /> 19MPDS Services Client Project ID Unocal#6981 4707 Pacific Ave Stockton Sampled Jul 26-27, 1995 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received Jul 27, 1995 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Aug 10, 1995 <br /> Attention Sarkis Karkarian First Sample # 507-2006 <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 /> 507-2006 MW1 -- 10 8/6/95 HP-9 96 <br /> 507-2007 MW2 Gasoline 25 8/9/95 HP-2 113 <br /> 507-2008 MW3 10 8/6/95 HP-9 101 <br /> 507-2009 MW4 Gasoline 10 8/6/95 HP-9 101 <br /> 507-2010 MW5 Gasoline 20 8/8/95 HP-5 83 <br /> 507-2011 MW6 -- 10 8/8/95 HP-4 91 <br /> 507-2012 MW7 Gasoline 20 8/8/95 HP-4 100 <br /> 507-2013 MW8 -- 10 8/8/95 HP-4 94 <br /> SEQUOIA ANALYTICAL, #1271 <br /> Signature on File <br /> Alan B Kemp <br /> Project Manager <br /> 5072006 MPD ¢2> <br />