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' 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N 1Mget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> 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 Prod ID Ripon Unified School Sampled 01/27/99 <br /> 1117 Lone Palm Avenue Sample Descrlpt RUSD-MW1-20 5 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 9901 E94-01 Reported 03f24199 <br /> kCBatch Number SP0203998260EXA <br /> trument 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 /> i <br /> Di-Isopropyl Ether (DIPS) 100 N D <br /> Ethyl t-Butyl Ether (ETBE) 100 N D <br /> t-Amyl Methyt Ether (TAME) 100 N D <br />,Surrogates Control Limits % % Recovery <br /> 1,2-Dlchloroethane-d4 70 121 112 <br /> 1 <br /> 1 <br /> CalQUytes reported as N D were not present above the stated (Emit of detection <br /> OIA <br /> ANALYTICAL - ELAP 41210 <br />�rolect Manager Page 3 <br />