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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) 988 9600 FAX(510) 988 9673 <br /> qwr Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> 101 <br /> MPDS Services Client Project ID Unocal#0123 1034 Central Ave Trac Sampled Se 12 1 <br /> 1 v p p 996 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received Sep 12, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Sep 30, 1996 <br /> Attention Jarrel Crider First Sample # 609-0769 <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 /> 609-0769 U-1 -- 10 9/25/96 HP-4 94 <br /> 609-0770 U-2 -- 10 9/25/96 HP-4 94 <br /> 609-0771 U-3 -- 10 9/25/96 HP-4 97 <br /> 609-0772 ES-1 -- 10 9/25/96 HP-4 95 <br />. 609-0774 ES-3 -- 10 9/25/96 HP-4 93 <br /> SSEQUOIA <br /> ANALYTICAL, #1271 <br /> gnature on File <br /> Alan B Kemp <br /> Project Manager Page 2 of 2 <br /> _ __ 6090769 MPD <2> <br />