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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 /> Analytical 819 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 /> fettler-Ryan - Dublin Client Pro'ect ID Tosco #11193 Stockton ' Sam led Dec 22 1998 <br /> 1 p <br /> 6747 Sierra Court, Suite J Sample Matrix Soil Received Dec 22, 1998 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Dec 23, 1998 <br /> Attention Doug Lee First Sample # 812-1856 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID ID ID ID ID <br /> mg/Kg 812-1856 812-1857 812-1858 812-1859 812-1860 812-1861 <br /> D1 D2 D3 D4 P1 P2 <br /> Purgeable <br /> Hydrocarbons 1 0 1,600 1,500 530 16 700 N D <br /> Benzene 00050 038 N D 1 3 0 57 N D N D <br /> Toluene 00050 18 37 94 0 067 14 N D <br /> Ethyl Benzene 00050 31 19 76 044 85 N D <br /> Dotal Xylenes 00050 190 150 47 2 3 72 N D <br /> MTBE 0 050 N D N D N D 0 80 N D 010 <br /> Chromatogram Pattern Gasoline Gasoline Gasoline Gasoline Gasoline <br /> Duality Control Data <br /> Report Limit Multiplication Factor 50 50 50 10 50 1 0 <br /> Date Analyzed 12/23/98 12/23/98 12/23/98 12/23/98 12/23/98 12/23/98 <br /> Instrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 HP-5 <br /> Surrogate Recovery, % * ** * 82 <br /> (GSC Limits = 40-140%) <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 /> t1lanne <br /> UOTA_ ANALYTICAL, #1271 Please Note <br /> * Surrogate recovery below control limit due to dilution <br /> Surrogate recovery above control limit due to coelution <br /> Fegley Q <br /> Project Manager <br /> 8121856 GET e 1> <br />