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lk , <br /> Sequoia 680 Chesapeake Drive Redwood Clty CA 94063 (650)364-9600 FAX(650)364 9233 <br /> 404 N Wlget lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> i 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 /> *tler-Ryan - Dublin Client Project ID Unocal SS#2859, Stockton Sampled Mar 12, 1999 <br /> 6747 Sierra Court, Suite J Sample Descript Water, MW-10 Received Mar 12, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Mar 17, 1999 <br /> Attention Deanna Harding Lab Number 903-1232 Reported Mar 17, 1999 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> N9/L 119/L <br /> Ethanal 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 2 0 N D <br /> Surrogates Control Limit % % Recovery <br /> Dlbromofluoromethane 50 150 83 <br /> 1,2-Dlchloroethane-d4 50 150 1 9* <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 Please Nate <br /> ' Surrogate recovery outside of acceptance range due to matrix interference <br /> Internal standard is acceptable <br /> JJhanne Fegley <br /> ect Manager <br /> 9031227 GET <3> <br />