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680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650)364-9233 <br /> 1 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)986 9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921-0100 <br /> 455 Vecor <br /> 94954 (707)792 1865 IFAX(707)792-0342 <br /> Analytical 1551 1ndDo�l Roavd North Ste D San luma CarlosCA 94070 411 1 (650)232-9600 FAX(650y 232 9612 <br /> Client Project 1D Arco #4932 Stockton Sampled May 26, 1999 <br /> 9912 Business Park Dr, Suite #100 Sample Descnpt Soil, D594' Received May 27, 1999 <br /> Sacramento, CA95827 Analysis Method EPA 8260 Analyzed Jun 3, 1999 <br /> Attention Rusty Benkosky Lab Number 905-2307 Reported Jun 7, 1999 <br /> QC Batch Number 9050123 <br /> Instrument ID <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> N9/K9 pg/K9 <br /> 1,2-Dlchioroethane 2,000 N D <br /> Ethanol 1,000,000 N D <br /> t-Butanol 200,000 N D <br /> Methyl t-Butyl Ether(MTBE) 2,000 130,000 <br /> DI-lsopropyl Ether (DIPE) 2,000 N D <br /> Ethyl t-Butyl Ether (ETRE) 2,000 N D <br /> t-Amyl Methyl Ether (TAME) 2,000 N D <br /> Surrogates Control Limit % % Recovery <br /> 1,2-Dlchloroethane-d4 70 121 99 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, San Carlos <br /> 4.t <br /> Dimpl(eS h <br /> Project Manager <br /> 9052303 SSS <10> <br />