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404 <br /> IN ,CZA lane <br /> Sequoia <br /> Walnut Creek,CA 94598 <br /> (925)98&9600 <br /> Analytical FAX(925)988-9673 <br /> 4kettler-Ryan -Dublin Client Project ID Tosco SS#6981, Stockton Sampled Jul 15, 1999 <br /> 6747 Sierra Court, Suite J Sample Descript Water,VW-1 Received Jul 16, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Jul 29, 1999 <br /> Attention Deanna Harding Lab Number 907-1240 Reported Aug 4, 1999 <br /> r <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L Ng/L <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether (RIPE) 20 N D <br /> Ethyl t-Butyl EIher(ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limit % % Recovery <br /> Dibromofluoromethane So 150 112 <br /> 1,2-Dichloroethane-d4 50 150 105 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> ianne Fegley <br /> Project Manager <br /> 9071230 GET <13> <br />