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Sequoia 680 Chesapeake Dnve Redwood City, CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> i-!D- 404 N Wget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Touchstone Developments - ~Client Prol ID Chevron 9-8264/8264-1 Sampled 11/07/95 <br /> 6280 Stoneridge Mall Fid 8211 Sample Descript T-1 Received 11/08/95 <br /> Pleasanton, CA 94588 Matrix SOLID Extracted 11/10/95 <br /> Analysis Method 8015Mod/8020 Analyzed 11/10/95 <br /> Attention Ann Marie Dockstader _ Lab Number 9511587-07 - _ Reported 11116195 <br /> OC Batch Number GC111095BTEXEXA <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1.0 13 <br /> Benzene 00050 023 <br /> Toluene 00050 00073 <br /> Ethyl Benzene 00050 0 054 <br /> Xylenes (Total) 00050 0 094 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 91 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOI ANALYTICAL - ELAP #1210 <br /> Mark Cargasacchi <br /> Project Manager Page 10 <br />