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r Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <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) 921 9600 FAX(916)921 0100 <br /> _Blaine Tech Services Client Prof ID - Shell Stockton/980112-H2 Sampled 01/13/98 <br /> 1680 Rogers Avenue Sample Descript VEW-2 Received 01/14/98 L <br /> San Jose, CA 95112 Matrix LIQUID <br />' Analysis Method EPA 8260 Analyzed 01/20/98 <br /> Attention Fran Thie - Lab Number 9801694-09 _ _ --- Reported 01(30198 <br /> Detection Limit Sample Results <br /> Analyte ug/L ug/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) - - 20 - - 25 <br /> DI-Isopropyl Ether (DIPS) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 95 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUO N LYTICAL - ELAP #1271 <br /> Pe y er <br /> Project Manager Page 25 <br />