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i <br /> Sequoia 680 Chesapeake Drive Redwood Ctty 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 /> q1W Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> *PDS Services Client Project Ib Unocal#0123, 1034 Central Ave,Tracy Sampled Mar 1, 1996 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received Mar 1, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Mar 19, 1996 <br /> Attention Jarrel Crider First Sample# 603-0121 <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 /> 603-0121 U-1 -- 10 3/6/96 HP-5 113 <br /> 603-0122 U-2 -- 10 3/6/96 HP-5 92 <br /> 603-0123 U-3 10 3/6/96 HP-5 89 <br /> 603-0124 ES1 -- 10 3/6/96 HP-5 94 <br /> . 603-0125 ES2 -- 10 3/6/96 HP-5 90 <br /> 603-0126 ES3 -- 10 3/6/96 HP-5 91 <br /> SEQUOIA ANALYTICAL,#1271 <br /> agnature on File <br /> Alan B Kemp <br /> Project Manager Page 2 of 2 <br /> 6030121 MPD ¢2> <br />