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680 Chesapeake Drive Redwood City CA 94063 {650)364-9600 FAX(650} 364-9233 <br /> Sequoia <br /> 404 N Wiget lane Walnut Creek CA 94598 (925)988-%00 FAX(925)988 9673 <br /> ' Analytical 819 Striker Avenue Suite B 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 /> i <br /> Sequoia-Petaluma Project Scott Forbes Sampled 312199 to 313199 <br /> 1455 N McDowell $lvd, Suite D Project Number P903283(ATC) Rf.Leived 3/15/99 <br /> ' Petaluma,CA 94954 Project Manager Scott Forbes Reported 3119/99 Sample Description P903283-05 <br /> Labor atory Sample Number L903113-03 <br /> ' Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> I <br /> Sequoia Analytical-San Carlos <br /> Volatile Organic Compounds by EPA Method 8260A <br /> 1,2-Dibromoethane 9030057 3/16199 3/16/99 100 ND ug/kg <br /> 1,2-Dichloroethane " " 100 ND " <br /> Dt-isopropyl ether 100 ND <br /> Ethyl tent-butyl ether 100 ND " <br /> Methyl tert-butyl ether 100 ND " <br /> ' Vert-amyl methyl ether " l00 ND " <br /> Tert-butyl alcohol 5000 ND _ <br /> Surrogate 12-Dichloroothane-d4 700-121 106 <br /> ' Surrogate Tohiene-d8 810-117 103 <br /> quota Analytical -San Carlos *Refer to end of i eport for text of notes and definitions <br /> ' Page 4 of 15 <br />