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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510) 686 9689 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Touchstone Development Client Prol ID 8632-2, Chevron 9-8632 Sampled 08/17/94 <br /> P O Box 2554 Sample Descnpt WX-13 Received 08/18/94 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 08/23/94 <br /> Analysis Method EPA 8015 Mod Analyzed 08/24/94 <br /> Attention Jeff Monroe Lab Number 9408887-02 Reported 09101194 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TEPH as Diesel 1 0 20 <br /> Chromatogram Pattern <br /> Non Diesel Mix C10-C13 <br /> Surrogates Control Limits% % Recovery <br /> n-Pentacosane (C25) 50 150 121 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> 7 �, <br /> Tague Clark <br /> Ope <br /> ect Manager Page 4 <br />