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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX 1650)364 9233 <br /> 4D— <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 92 t 9600 FAX (916)921 0100 <br /> MPDS Services Client Project ID TOSCO#5886 2701 W March Lane Stockton Sampled Dec 1 1997 <br /> 2401 Stanwell Dr, Ste 300 Sample Descript Liquid, MW6S Received Dec 3, 1997 <br /> Concord, CA 94520 Analysis Method EPA 8260 Analyzed Dec 9, 1997 <br /> Attention Jarrel Crider Late Number 712-0171 Reported Dec 9, 1997 <br /> OXYGENATE COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> p9/L N9/L <br /> Ethanol 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 /> j t-Amyl Methyl Ether(TAME) 20 N D <br /> Surrogates Control Limit % % Recovery <br /> 1 2-Dichloroethane-d4 76 114 104 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1210 <br /> dkignature on File <br /> Alan B Kemp <br /> Pro)ect Manager <br /> 7120163 MPD <10> <br />