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1 Sequoia 680 Chesapeake Drive Redwood City C-,%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 /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 4Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)791-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070 41 1 1 (650)232-9600 FAX(650) 232-9612 <br /> r—ecorClient Project lid Arco #4932 Stockton Sampled May 26, 1999 <br /> 9912 Business Park Dr, Suite #100 Sample Descript Sod, D1@3 5' Received May 27, 1999 <br /> Sacramento, CA95827 Analysis Method EPA 8260 Analyzed Jun 3, 1999 <br /> Attention Rusty Benkosky Lab Number 905-2303 Reported Jun 7, 1999 <br /> QC Batch Number 9050123 <br /> Instrument ID - <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> lig/Kg Ng/Kg <br /> 1,2-Dlchloroethane 100 N D <br /> Ethanal 50,000 N D <br /> t-Butanol 10,000 N D <br /> Methyl t-Butyl Ether(MTBE) 100 N D <br /> DI-Isopropyl Ether(DIPE) 100 N D <br /> Ethyl t-Butyl Ether(ETBE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br /> Surrogates Control Limit% % Recovery <br /> 1,2-Dichloroethane-d4 70 121 119 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, San Carlos <br /> Dimple Sharma <br /> Project Manager <br /> 9052303 SSS <6> <br /> 9b <br />