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F r• <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Iwo Analytical 819 Sinker Avenue Suite 8 Sacramento cq 95834 (�16�921-9600 FAX(914 }9li-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 ( 07 792-1865 FAX 707 792-0342 <br /> �Gettler Ryan/Geostrategies Client Prol-ID —Unocal 5886, 180137 85 _ - --- -- Sampled 06/17/98 _ <br /> 6747 Sierra Court Suite J Sample Descript MW-7S Received 06/17/98 <br /> 11 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 9806C27-12 _ Reported 07/09/98 <br /> CC Batch Number GC0624980HBPEXZ <br /> Instrument lD GCHP19A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) with Silica Gel Cleanup <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> i <br /> TEPH as Diesel 50 N D <br /> Chromatogram Pattern <br /> I <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 67 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Grarncher <br /> ct Manager Page 5 <br />