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Sequoia 'Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> 404 N Wiget Lane wainut Creek.CA 94598 (9Z5)988-9600 FAX(92 5)988-9673 <br /> � Analytical 819 soriktr Avenue Suitt 8 Sacramento,CA 34 958 (916)921-9600 FAX(916)9Z-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,U 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 /> Delta Environmental Client Pro3 ID Exxon 7-3708, D093-809 Sampled 03/05/99 <br /> 3164 Gold Camp Drive, #200 Sample Descript VW-1 Received 03/05/99 <br /> Rancho Cordova, CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/15/99 <br /> Attention ,Dim Brownell Lab Number 9903428-09 Reported 03J18199 <br /> QC Batch Number GC031599BTEX31A <br /> Instrument ID GCHP31 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L u9/L <br /> TPPH as Gas 50 87 <br /> Methyl t-Butyl Ether 2 5 N D <br /> Benzene 050 N D <br /> Toluene 0 50 078 <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Unidentified HC C6 C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotol uene 70 130 98 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL FLAP #1210 <br /> A Pichette <br /> )ect Manager Page 10 <br />