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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 Striker Avenue Suite 8 Sacramento CA 95634 (916) 921 9600 FAX (916) 921 0100 <br /> Touchstone Development Client Proj ID 8632-2, Chevron 9-8632 Sampled 08/17/94 <br /> P 0 Box 2554 Sample Descript WX-12 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 9408887-01 _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 10 15 <br /> Benzene 00050 N D <br /> Toluene 00050 0 013 <br /> Ethyl Benzene 00050 024 <br /> Xylenes (Total) 00050 059 <br /> Chromatogram Pattern <br /> Weathered Gas CS-C12 <br /> Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 118 <br /> 9 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> mlTC. ouu - <br /> e Tague Clark <br /> Project Manager Page 3 <br />