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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 %00 FAX(916)921 0100 <br /> Touchstone Developments _ -- µ Client Prol ID Chevron 9-8264/8264-1 Sampled 11/07/95 <br /> 6280 Stonerldge Mall Rd B211 Sample Descript P-5 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 9511587-05 _ Reported 11116195 <br /> -- - --_ _ <br /> OC Batch Number GC111095BTEX6-CA <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 25 66 <br /> Benzene 0 12 0 54 <br /> Toluene 0 12 0 64 <br /> Ethyl Benzene 0 12 1.3 <br /> Xylenes (Total) <br /> 0 12 Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 99 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOI ANALYTICAL - ELAP #1210 <br /> t <br /> Mark Cargasacchi <br /> Project Manager Page 8 <br />