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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364 9233 <br /> 4D404 N wiget Lane walnut Creek CA 94598 (925)9W-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento U 95834 (916)921-9605 FAX(916)421-0100 <br /> 1455 lvkpawell Blvd North Ste D Petaluma.CA 94954 {757}792-1865 FAX(757)792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650) 232-9600 FAX(650)232 9612 <br /> Delta Environmental Client Prol ID Exxon 7-3708, D093-809 Sampled 03/05/99 <br /> 3164 Gold Camp Drive, #200 Sample Descrlpt MW-6 Received 03/05/99 <br /> Rancho Cordova, CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/15/99 <br /> Attention Jim Brownell Lab Number 9903428-06 Reported 03/18199 <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 ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 2 5 14 <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 92 <br /> 0 <br /> Analytes reported as N D were not present above the stated lima of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> A Plchette <br /> sect Manager Page 7 <br />