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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wlget Lane Walnut Creek CA 94598 (925)988-%00 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1 551 Industrial Road San Carlos CA 94070 4111 (650)232-9600 FAX(650) 232 9612 <br /> Sequoia- Petaluma Project Scott Forbes Sampled 312199 to 3/3199 <br /> 1455 N McDowell Blvd,Sutte D Project Number P903283(ATC) Received 3/15/99 <br /> ' Petaluma CA 94954 Project Manager Scott Forbes Reported 3119199 <br /> Sample Descrlptton P903283-07 <br /> Laboratory Sample Number L903113-05 <br /> 1� Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Seguola 4nalvttcal-San Carlos <br /> Volatile Organic Compounds by EPA Method 8260A <br /> 1,2-Dibromoethane 9030057 3116/99 3/16/99 100 ND ug/kg <br /> ' 1,2-Dichloroethane 100 ND " <br /> Di-isopropvl ether 100 ND " <br /> Ethyl tent-butyl ether 100 VD " <br /> Methyl tent-butyl ether 100 ND " <br /> Tert-amyl methyl ether i I' 100 ND " <br /> Tert-butyl alcohol 5000 ND <br /> Surrogate 1 2-Dichlotoethane-d4 700-121 109 YO <br /> Surrogate Tohtene-d8 810-117 102 " <br /> i <br /> I <br /> 1 <br /> 1 ' <br /> 1 <br /> 1rquoiaYt Analytical -San Carlos *Refer to end of report for tent of notes and definitions <br /> ' Page 6 of 15 <br />