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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 4D- 404 N Wget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Touchstone Developments _ Client Prod ID Chevron 9-8264/8264-1 Sampled 11/07/95 <br /> _ 6280 Stoneridge Mall Rd B211 Sample Descript P-6 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 9511587-06 Reported 11 J16195 <br /> QC Batch Number GC111095BTEXEXA — - -µ - - <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 10 68 <br /> Benzene 00050 0.013 <br /> Toluene 00050 N D <br /> Ethyl Benzene 0.0050 0 011 <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Weathered Gas C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 108 <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 9 <br />