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I <br /> +� 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9133 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Analytical <br /> Blame Tech Services Client Pro) ID Chevron 9-8264/971124-Sl Sampled 11/24/97 <br /> 1680 Rogers Avenue Sample Descript MW-1 Received 11/26/97 <br /> San Jose, CA 95112 Matrix LIQUID Extracted 12/01/97 <br /> Analysis Method EPA 8015 Mod Analyzed 12/04/97 <br /> Attention Fran Thie Lab Number 9711 F41-01 Reported 12/11197 <br /> QC Batch Number GC1201970HBPEXZ <br /> Instrument ID GCHP413 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L u9/L <br /> TEPH as Diesel 50 110 <br /> Chromatogram Pattern C9-C24 Unidentified HC <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 94 <br />• <br /> Results quantitated against a diesel standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN IC L - ELAP #1210 <br /> Penner <br /> �ogject Manager Page 6 <br />