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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 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Touchstone Developments _ Client Prol ID Chevron 9-8264 Sampled 11/13/95 <br /> P O Box 2554 Sample Descript TX5-5' Received 11/14/95 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 11/16/95 <br /> - Analysis Method EPA 8015 Mod Analyzed 11/17/95 <br /> Attention Jeff Monroe Lab Number 9511A10-07 Reported 11(22195 <br /> OC Batch Number GC1 1 16950HBPEXB -- <br /> Instrument ID GCHPSB <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TEPH as Diesel 10 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 65 <br /> 10 <br /> Results quantitated against a diesel standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU ANALYTICAL - ELAP #1210 <br /> Mark Cargasacchi <br /> P ect Manager Page 16 <br />