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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 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 01W <br /> Touchstone Developments Client Prol ID Chevron 9-8264 /9-8264 Sampled 02/06/96 <br /> 17170 Keaton Ave Sample Descript MW-4-10 0 Received 02/09/96 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 02/13/96 <br /> Analysis Method EPA 8015 Mod Analyzed 02/15/96 <br /> Attention Tim Walker Lab Number 9602708-12 Reported 02f23j96 <br />)C Batch Number GCO213960HBPEXB <br /> 3strument ID GCHP4B <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 59 <br /> i <br /> sults quantitated against a diesel standard <br /> aiyles reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP 01210 <br /> Follett <br /> k Manager Page 14 <br />