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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)998-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd Forth Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)79Z-034Z <br /> v <br /> ttler'Ryan- Dubl1n Client Project ID' A 'Costo SS#6981, Stockton~ ` Sampled Jul 2t, 1998 <br /> SierraCourt, Suite J Sample Descript Water,VW-4 Received Jul 22, 1998 <br /> #47 <br /> blin, CA 94568 Analysis Method EPA 8260 Analyzed Jul 28, 1998 <br /> Attention Deanna Harding Lab Number 807-1532 Reported Aug 11, 1998 <br /> OXYGENATED COMPOUNDS EPA 8260 <br /> Analyte Detection Limit Sample Results <br /> yg/L yg/L <br /> Ethanol 500 N D <br /> It-Butanol .. .. . ... . .. .. .. 100 . .. .. . .. 170 <br /> Methyl t- uty. ter . 20 <br /> Di-Isopropyl Ether(DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limit% % Recovery <br /> 1,2-Dichioroethane-d4 50 150 92 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL,#1271 <br /> LthC.. <br /> #hatnnFegley <br /> Project Manager <br /> 8071520 GEF <15> <br />