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r ' <br /> Q Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N WISet Lane Walnut Creek,CA 94598 (925)988-9600 FAX(92 5)988-9673 <br /> 819 Straker Avenue Suite B 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 Ryan/Geostrategles Client Prol 1D Unocal 2859, 280054 Sampled 08/31/98 <br /> - 6747 Sierra Court Suite J Sample Descript MW-9 Received 09/01/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 09/04/98 <br /> Attention Deanna Harding Lab Number 9809003-10 Reported 09f20198 <br /> Purgeable Total Petroleum Hydrocarbons as Gasoline/BTEX/MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 112 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> ranicher <br /> ct Manager Page 19 <br />