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41) Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (S 10) 686 9600 FAX (510) 686 9689 <br /> tul� Analytical 819 Striker 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 Sox 2554 Sample Descript TX-3 Received 08/18/94 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 08/24/94 <br /> Analysis Method 8015Mod/8020 Analyzed 08/24/94 <br /> Attention Jeff Monroe Lab Number 9408687-06 Reported 09101194 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1000 2500 <br /> Benzene 50 12 <br /> Toluene 50 99 <br /> Ethyl Benzene 50 67 <br /> Xylenes (Total) so 180 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 105 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> WA77( c�L <br /> Tague Claris <br /> Pr ct Manager Page 10 <br />