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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Geek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(9 16)921-0100 <br /> � Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)Z.32-9600 FAX(650)232-9612 <br />*ettler-Plyan-Oublln Client Project lb Unocal SS#0123,Tracy Sampled Jun 14, 1999 <br /> 6747 Sierra Court, Suite J Sample Matmc Water Received Jun 14, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Jun 30, 1999, <br /> S <br /> Attention Deanna Harding First Sample # 906-1313 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample <br /> Analyte Limit LD <br /> pg/L 906-1313 <br /> U-6 <br /> Purgeable <br /> Hydrocarbons 50 N D <br /> Benzene 0 50 N D <br /> Toluene 050 1 1 <br /> Ethyl Benzene 050 N D <br /> Total Xylenes 050 1 4 <br /> MTBE 25 25 <br /> Chromatogram Pattern - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 <br /> Date Analyzed 6/23/99 <br /> Instrument Identification HP-5 <br /> Surrogate Recovery, % 96 <br /> (OC Limits = 70-130%) <br /> Y <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL, #1271 <br /> Ilanne Fegley <br /> Project Manager <br /> 9061307GET <2> <br />