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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> ,!IN 404 11Wget Lane Walnut Creek 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 /> Touchstone Developments Client Prol ID Chevron 9-8264/8264-1 Sampled 11/07/95 <br /> 6280 Stoneridge Mail Rd B211 Sample Descript T-8 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 9511587-14 _ Reported 11J16195 <br /> QC Batch Number GC1 1 1095BTEXEXA - <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 81 <br /> Benzene 00050 077 <br /> Toluene 00050 039 <br /> Ethyl Benzene 0.0050 025 <br /> Xylenes (Total) 00050 1 0 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 103 <br /> i <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 21 <br />