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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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (9t6)921-9600 FAX(916)921-010 0 <br /> 1455 McDowell Blvd North Ste D Petaiuma CA 94954 707 792 1865 FAX 707 792-0342 <br />' ATC Associates, Inc Protect Ripon USD Sampled 2/5199 <br /> 1 l l7 Lone Palm Ave,Suite B Protect Number 13099 0001 Received 2/10199 <br />'Modesto, CA 95351 Project Manager Drew Van Allen Reported 2/25199 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MW-2 P902337-01 Water 2 <br /> Tert-amyl methyl ether 9020394 2/18/99 2/19/99 500 ND ug/l <br /> Tert-butyl alcohol 1000 ND " <br />'Di-isopropyl ether 500 ND " <br /> 1,2-Dibromoethane(EDB) „ „ „ 25 0 ND 1' <br /> 1,2-Dichloroethane 25 0 ND <br /> Ethanol 5000 ND " <br />'Ethyl tert-butyl ether „ 500 ND " <br /> Methyl tert-butyl ether 500 ND " <br /> Surrogate Dibromofluorom ethane 860-118 109 <br />'Surrogate 1 1-Dtchloroethane-d4 11,111-110 106 <br /> Surrogate Toluene-d8 880-110 105 li <br /> Surrogate 4-Bromofluorobenzene 860-115 109 <br /> P <br /> 1 <br /> 1 <br /> jaS,q,o—,aAnalyticaI-Petaluma *Refer to end of report for test of notes and definitions <br /> ' Page 4of9 <br />