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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> -1 404 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 /> e <br /> Cambria Environmental Cilent Project lb Shell, 341 East Main St, Ripon, CA Sampled Jul 15, 1998 <br /> 1144 65th St , Suite C Sample Descript Method Blank Received Jul 17, 1998 <br /> Oakland, CA 94608 Analysis Method EPA 5030/8260 Extracted Jul 24, 1998 <br /> Attention Owen Ratchye Lab Number BLK072498 Analyzed Jul 24, 1998 <br /> Reported Aug 3, 1998 ' <br /> OXYGENATES by GC/MS (EPA 8260) <br /> Analyte Reporting Limit Sample Results ' <br /> Ng/kg Ng/kg <br /> Ethanol 25,000 N D t <br /> Tertiary butanol 5,000 N D <br /> Methyl tertiary butyl ether(MTBE) 100 N D <br /> Di-isopropyl ether (DIPE) 100 N D ' <br /> Ethyl tertiary butyl ether (ETRE) ' 100 N D <br /> Tertiary amyl methyl ether (TAME) 100 N D <br /> I <br /> Surrogate Control Limits, % Recovery, % <br /> 1,2 Dichloroethane-d4 70-121 103 <br /> I <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQU fA ANALYTICAL, ELAP #1210 <br /> inda C Schneider <br /> Project Manager/Sacramento Laboratory <br /> 5807204 CAM <11> <br />