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Q 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)792-0341 <br /> Oler-Ryan - Dublin Client Project ID Tosco 76#11193, Stockton Sampled Dec 10, 1998 <br /> 6747 Sierra Court, Suite J Sample Descript Soil, 3E Received Dec 10, 1998 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Dec 11, 1998 <br /> Attention Haig Kevork Lab Number 812-0917 Reported Dec 14, 1998 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/kg F+9/kg <br /> Ethanol 250,000 N D <br /> t-Butanol 50,000 N D <br /> Methylt- u yEther 1,000 80,000 <br /> I- sopropy ter 1,000 <br /> Ethyl t-Butyl Ether (ETRE) 1,000 N D <br /> t-Amyl Methyl Ether (TAME) 1,000 N D <br /> Surrogates Control limit% % Recovery <br /> 1,2-Dlchloroethane-d4 50 150 98 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL, #1271 <br /> JJianne Fegley <br /> ject Manager <br /> 8120913 GET <6> <br />