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I Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytic819 Striker Avenue Suite 8 Sacramento C4 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 /> Cambria Client Proj ID Shell 341 Main St , Ripon Sampled 02/23/99 <br /> I1144 65th St Suite C Sample Descript MW-3-34 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 9902E24-11 _ Reported 03J19199 <br /> QC Batch Number GC030999BTEXEXA <br /> Instrument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> IAnalyte Detection Limit Sample Results <br /> mg/Kg m9/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 96 <br /> 4-Bromofluorobenzene 60 140 81 <br /> I • <br /> II <br /> I <br /> Analytes reported as N D were not present above the stated hind 01 detection <br /> SEQUOIA ANALYTICAL ELAP 01210 <br /> Project Manager Page 22 <br />