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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)986-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921-0100 <br /> - „� Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792-1865 FAX(707) 792-0342 <br /> Gettler RyanyGeostrategies Client Prol ID Unocal 5421, 140162 02 Sampled 04/16/98 <br /> 6747 Sierra Court Suite J Sample Descript UWS-1(comp) Received 04/17/98 <br /> Dublin, CA 94568 Matrix SOLID Extracted 04/27/98 <br /> Analysis Method EPA 8015 Mod Analyzed 04/28/98 <br /> Attention Clyde Galantine Lab Number 9804C43-03 Reported 04130198 <br /> QC Batch Number GC0427980HBPEXF <br /> Instrument ID GCHP5A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TEPH as Diesel t o 27 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 5o 150 96 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA NALYTICAL - ELAP #1210 <br /> ory <br /> pec Manager Page 10 <br />