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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical Big Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> ILDS Services Client Project ID Unocal#0123 1034 Central Ave,Tracy Sampled Dec 11, 1996 <br /> 2401 Stanwell Dr , Ste 300 Matrix Descript Water Received Dec 11, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Dec 27, 1996 <br /> Attention Jarrel Crider First Sample # 612-1094 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> Fig/L pg/L pg/L tag/L lig/L <br /> 612-1094 U-1 95 ND 095 71 48 <br /> 612-1095 U-2 160 076 15 89 21 <br /> 612-1096 U-3 ND ND ND ND ND <br /> 612-1097 ES-1 ND ND ND ND ND <br /> 612-1098 ES-2 ND ND ND ND ND <br /> 612-1099 ES-3 ND ND ND ND ND <br /> Detection Limits 50 050 050 050 050 <br /> Total Purgeable Petroleum Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as ND were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> Ognature on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 6121094 MPD <I> <br />