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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-%00 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 4".�) <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos,CA 940704111 (650)232-9600 FAX(650)232-9612 <br /> Cambria Client Prol ID Shell 341 Main St , Ripon Sampled 02/24/99 <br /> 1144 65th St Suite C Sample Descript EW-1-9 5' Received 02/26/99 <br /> Oakland, CA 94608 Matrix SOLID Extracted 03/09/99 <br /> Analysis Method 8015Mod/8020 Analyzed 03/09/99 <br /> Attention Owen Ratchye Lab Number 9902E24-15 Reported 03119199 <br />'OC Batch Number GC030999BTEXEM H <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br />' TPPH as Gas 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br />' Trlfluorotoluene 70 130 76 <br /> 4-Bromofluorobenzene 60 140 118 <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br />'SEQUOIA ANALYTICAL - ELAP #1210 <br />'Project Manager Page 30 <br /> 1 <br />