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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget!_ane Walnut Geek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Surto 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> - <br /> Gettler Ryan[Geostrategies Client Proi ID Unocal SSS#5886- Sampled 03/25/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-1 Received 03/25/98 - <br /> Dublin, CA 94568 Matrix LIQUID Extracted 03/27/98 <br /> Analysis Method EPA 8015 Mod Analyzed 03/31/98 = <br /> = Attention Deanna Harding _ Lab Number 9803G82-02 _ _ Reported 04108f98__= <br /> (R Batch Number GC0327§66H—FiEXB� « -' <br /> Instrument ID GCHP19A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) with Silica Gel Cleanup <br /> Analyte Detection Limit Sample Results <br /> tag/L ug/L <br /> TEPH as Diesel 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> n-Pentacosane (C25) 50 150 53 <br /> 0 <br /> Analytes reported as N D were not present above the stated lima at detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 4ag <br /> Project Manager Page 3 <br />