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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 Creel.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)911-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler-Ryan - Dublin Client Pro`ect 1D Tosco#11193, Stockton Sampled Dec 22, 1998 <br /> 1 p <br /> 6747 Sierra Court, Shite J Sample Matrix Sall 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 # 812-1862 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample Sample Sample <br /> Analyte Limit I D I D I D <br /> mg/Kg 812-1862 812-1863 812-1864 <br /> P3 P4 P5 <br /> Purgeable <br /> Hydrocarbons 1 0 20 93 N D <br /> Benzene 00050 N D 0 12 00088 <br /> Toluene 00050 N D 027 N D <br /> Ethyl Benzene 00050 0 21 020 N D <br /> *otal Xylenes 00050 1 1 080 N D <br /> MTBE 0 050 N D 053 0 56 <br /> Chromatogram Pattern Gasoline Gasoline -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 20 5 0 1 0 <br /> Date Analyzed 12/23/98 12/23/98 12/23/98 <br /> Instrument Identification HP-5 HP-5 HP-5 <br /> Surrogate Recovery, % 87 125 87 <br /> (DC 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 /> tEQUOIA ANALYTICAL,#1271 <br /> UV A/— P <br /> Janne Fegley <br /> Project Manager <br /> 8121856 GET <2> <br />