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1 680 Chesapeake Drive Redwood City CA 94063650 364-9600 FAX 650 364-923 <br /> Nn et Lane Walnut Creek CA 94598 ( ) t ) 3 <br /> Sequoia 404 N <br /> g (925}98$-9600 FAX 925)988-9673 <br /> Analytical <br /> 1111111,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 /> 1 <br />'ATC Associates, Inc Client Prol ID Ripon Unified School Sampled 01/27/99 <br /> 1117 Lone Palm Avenue Sample Descript RUSD-MW3-20 5 Received 01/29/99 <br /> Modesto, CA 95351-1502 Matrix SOLID <br /> Analysis Method EPA 8260 Analyzed 02/03/99 <br /> UAttention Drew Van Allen Lab Number 9901 E94-07 Reported 03J24199 <br /> Batch Number SP0203998260EXA <br /> Instrument ID GC/MS-2 <br /> IOxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit <br /> Sample Results <br /> ug/KJ 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 /> 1 Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 70 121 97 <br /> i <br /> 1 <br /> 1 <br /> 1 <br /> i <br /> Inalytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager Page 19 <br /> 1 <br />