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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 6) l 819 Striker Avenue Suite 8 Sacramento,CA 95834 (9t6)921-9600 FAX(916)911-0100 <br /> �,,) Analytica <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ttler-Ryan- Dublin Client Project ID Unocal SS#0123, Tracy Sampled x'Mar 16, 1999 <br /> 47 Sierra Court, Suite J Sample Matrix Water Received Mar 17, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Apr 2, 1999 <br /> Attention Deanna Harding First Sample # 903-1672 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample <br /> Analyte Limit I D. <br /> Ng/t- 903-1672 <br /> U-6 <br /> Purgeable <br /> Hydrocarbons 50 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Total Xylenes 0 50 N D <br /> MTBE 25 N D <br /> Chromatogram Pattern - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 <br /> Date Analyzed 3/27/99 <br /> Instrument Identification HP-5 <br /> Surrogate Recovery, % 92 <br /> {QC Limits = 70-130%) <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 /> dw <br /> �r <br /> lianne Fegley <br /> Project Manager <br /> 9031666 GET <27 <br />