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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 (9Z5)988-9600 FAX(925)988-9673 <br /> �I,� Analytical 619 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ettler-Ryan - Dublin Client Project ID Tosco #11193, Stockton Sampled Dec 17, 1999 <br /> 6747 Sierra Court, Suite J Sample Matrix Water Received Dec 17, 1998 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Dec 22, 1998 <br /> Attention Doug Lee First Sample # 812-1494 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX /MTBE <br /> Reporting Samplei- + <br /> Analyte Limit ID <br /> fig/L 812-1494 = I LER-IR Yr <br /> Water-FTE <br /> Purgeable <br /> Hydrocarbons 50 17,000 <br /> Benzene 050 1,500 <br /> Toluene 050 830 <br /> Ethyl Benzene 050 120 <br /> Ootal Xylenes 050 2,600 <br /> MTBE 25 100,000 <br /> Chromatogram Pattern Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 100 <br /> Date Analyzed 12/18/98 <br /> Instrument Identification HP-2 <br /> Surrogate Recovery, % 108 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting Amit <br /> SEQUOIA ANALYTICAL, #1271 <br /> lannoeFegley <br /> Project Manager <br /> 8121494GET <1;�- <br />