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4T) <br /> 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 B Sacramento CA 95834 (916) 921 9600 FAX(916)931 0100 <br /> Touchstone Developments Client Prol ID Chevron 9-4183 /9-4183 Sampled 04/10/96 <br /> 781 Kingston Ave Sample Descript T4-W-9 5 Received 04/10/96 <br /> Oakland, CA 94611 Matrix SOLID Extracted 04/15/96 <br /> Analysis Method EPA 8015 Mod Analyzed 04/17/96 <br /> Attention Robert Mailory Lab Number 9604850-02 Reported 04J24196 <br /> OC Batch Number GC0409960HBPEXC <br /> Instrument ID GCHP5B <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TEPH as Diesel 600 14000 <br /> Chromatogram Pattern C9-C24 Unidentified HC <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 O <br /> Results quantitated against a diesel standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Kevin Follett <br /> IFject Manager Page 9 <br /> z� <br />