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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wille[Lane Walnut Creek CA 94596 (510) 988 9600 FAX (510)988 9673 <br /> trilrr Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> OMPDS Services Client Project ID Tosco#5886 2701 W March Lane Stockton Sampled Dec 1, 1997 <br /> 2401 Stanwell Dr Ste 300 Sample Descrept Liquid MW3 Received Dec 3 1997 <br /> Concord CA 94520 Analyses Method EPA 8260 Analyzed Dec 9, 1997 <br /> Attention Jarrel Crider Lab Number 712-0165 Reported Dec 9, 1997 <br /> OXYGENATE COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L Ng/L <br /> Ethanol 6,200 N D <br /> t-Butanol 1,200 N D <br /> Methyl t-Butyl Ether 25 .. 2,200 <br /> i- sopropy ter 25 <br /> Ethyl t-Butyl Ether (ETBE) 25 N D <br /> t-Amyl Methyl Ether (TAME) 25 N D <br /> Surrogates Control Limit% %Recovery <br /> 1,2-Dechloroethane-d4 76 114 106 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL. #1210 <br /> Oinature on File <br /> Alan B Kemp <br /> Project Manager <br /> 7;20163 MPD <75 <br />