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Sequoia 680 Chesapeake Dnve 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 /> wiJor Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Touchstone Developments Client Prol ID Chevron 9-8264 /8264 Sampled 02/01/96 <br /> 17170 Keaton Ave Sample Descript B-4W Received 02/09/96 <br /> Sonoma, CA 95476 Matrix LIQUID Extracted 02/13/96 <br /> Analysis Method EPA 8015 Mod Analyzed 02/14/96 <br /> Attention Tim Walker Lab Number 9602707-17 Reported 02116J96 <br />)C Batch Number GCO213960HBPEXA <br /> istrument ID GCHP4A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 50 580 <br /> Chromatogram Pattern C9-2C4 Unidentified HC <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 103 <br /> i <br /> sults quantitated against a diesel standard <br /> alytes reported as N D were not present above the stated lirnit of detection <br /> EQUOIA ANALYTICAL - FLAP #1210 <br /> w Follett <br /> Manager Page 20 <br />