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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> ,� Analytical 819 Smkw Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792 0342 <br /> Getll6r Ryan/Geostrategies Client Prof ID µUnocal 5886, 180137 85 _ Sampled 06/17/98 M <br /> _= 6747 Sierra Court Suite J Sample Descript MW-3 Received 06/17/98 <br /> Dublin, CA 94568 Matrix LIQUID Extracted 06/24/98 <br /> Analysis Method EPA 8015 Mod Analyzed 06/26/98 <br /> --Attention Deanna Harding _ Lab Number 9806C26-04 Reported 07109198 <br /> QC Batch Number GC6624980H6PEXZ <br /> Instrument ID GCHP19A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) with Silica Gel Cleanup <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control, Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 69 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - FLAP 41210 <br /> - 3_�,. <br /> T d Granicher <br /> ct Manager Page 9 <br />