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® Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> `� 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> e nalytieaI 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Cambria Client Prod rD Shell 341 E Main Sampled 03/23/98 <br /> 1144 65th St Suite C Sample Descrlpt MW-1, 23 5-24 5 Received 03/24/98 <br /> Oakland, CA 94608 Matrix SOLID Extracted 03/25/98 <br /> Analysis Method 8015Mod/8020 Analyzed 03/25/98 <br /> Attention Paul Waite _ Lab Number 9803F79-04 _ Reported 03131198 <br /> OC Batch Number GC032498BTEXEXB <br /> Instrument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> m9/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 /> Trifluorotoluene 70 130 94 <br /> 4-Bromofluorobenzene 60 140 95 <br /> • <br /> Analytes reported as N n were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 41 <br /> rd Herling <br /> Project Manager Page 10 <br />