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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> a_ 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(5 t0)988 9673 <br /> I,�► Analytical 819 Sinker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Touchstone Developments Client Prol 1D " Chevron 9-8264/8264-1 Sampled 11/07/95 <br /> 6280 Stoneridge Mall Rd B211 Sample Descript UO 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 9511587-17 Reported 11116195 <br /> OC Batch Number GC1 11 095BTEXEXA <br /> Instrument ID GCHP18 <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 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 92 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUO ANALYTICAL - ELAP #1210 <br /> Mark Cargasacchi <br /> Project Manager Page 29 <br />