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41) Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 11 Wiget Lane Walnut Geek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Touchstone Developments Client Prod ID Chevron 9-8264/8264-1 Sampled 11/07/95 <br /> 6280 Stoneridge Mall Rd B211 Sample Descript SP-1 (A-D) Comp Received 11/08/95 <br /> Pleasanton, CA 94588 Matrix SOLID Extracted 11/08/95 <br /> Analysis Method 8015Mod/8020 Analyzed 11/08/95 <br /> Attention Ann Marie Dockstader Lab Number 9511553-01 __ Reported 11113195 <br /> OC Batch Number GC110895BTEXEXB � <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 33 <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 0 021 <br /> Chromatogram Pattern <br /> Weathered Gas C8-C12 <br /> Surrogates Control Limits% % Recovery <br /> TrrHuorotoluene 70 130 92 <br /> Analytes reported as N D were not present above the stated lima of detection <br /> SEQU IA ANALYTICAL - ELAP #1210 <br /> Mark Cargasacchi <br /> Project Manager Page 2 <br />