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' 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> X1117 Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792-1865 FAX(707) 792-0342 <br /> 1551 Industrial Road San Carlos, CA 94070 4111 (650)232 9600 fAX(650)232 9612 <br /> ATC Associates, Inc Client Proj ID Ripon Unified School Sampled 01/27/99 <br /> 1117 Lone Palm Avenue Sample Descript RUSD-MW1-35 Received 01/29/99 <br /> Modesto, CA 95351-1502 Matrix SOLID <br /> Analysis Method EPA 8260 Analyzed 02/03/99 <br /> Attention Drew Van Allen Lab Number 9901E94-02 Reported 03124199 <br /> kC Batch Number SP0203998260EXA <br /> nstrument ID GC/MS-2 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/Kg ug/Kg <br />' Ethanol 25000 N D <br /> t-Butanol 5000 N D <br /> Methyl t-Butyl Ether (MTBE) 100 N D <br /> Di-Isopropyl Ether (DIPE) 100 N D <br /> Ethyl t-Butyl Ether (ETBE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 70 121 110 <br /> alytes reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP 01210 <br />�roject Manager Page 6 <br /> 1 <br />