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yl Sequoia680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 FAX(650)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 0100 <br /> Blaine Tech Services Client Prol ID Chevron 9-8632/980212-C1 Sampled 02/12/98 <br /> 1680 Rogers Avenue Sample Descript MW-1 Received 02/13/98 <br /> San Jose, CA 95112 Matrix LIQUID Extracted 02/18/98 <br /> Analysis Method EPA 8015 Mod Analyzed 02/21/98 <br /> Attention Fran Thie Lab Number 9802902-01 Reported 03102198 <br /> QC Batch Number GCO218980HBPEXZ <br /> Instrument ID GCHP19B <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 50 480 <br /> Chromatogram Pattern C9-C24 Unidentified HC <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 113 <br /> Results quantitated against a diesel standard <br /> Analytes reported as were not present above the stated limit of detection <br /> SEQU LYTICAL - ELAP #1210 <br /> Peggy n <br /> ct Manager Page 2 <br />