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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-96W FAX(510) 988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921-96W FAX(916) 921 0100 <br /> Touchstone Developments Client Prol ID Chevron 9-8264 Sampled 11/13/95 <br /> P O Box 2554 Sample Descript Sump Received 11/14/95 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 11/16/95 <br /> Analysis Method EPA 8015 Mod Analyzed 11/18/95 <br /> Attention Jeff Monroe Lab Number 9511A10-02 _ _ Reported_11122195 <br /> QC Batch Number GC1116950HBPEX6 - - <br /> instrument ID GCHP413 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TEPH as Diesel 1 0 26 <br /> Chromatogram Pattern C12-C24 Unidentified HC <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 82 <br /> 0 <br /> Results quantitated against a diesel standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOI ANALYTICAL - ELAP #1210 <br /> Mark Cargasacchl <br /> 41'ect <br /> Manager Pae s <br /> 9 <br />