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." 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wlget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suire 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> filly Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategles Client Prol ID Unocal SS#5885/2701W March- Y Sampled» 09%01/98 = <br /> - 6747 Sierra Court Suite J Sample Descrlpt MW-3 Received 09/02/98 <br /> Dublin, CA 94568 Matrix LIQUID Extracted 09/08/98 _ <br /> Analysis Method EPA 8015 Mod Analyzed 09/10/98 <br /> Attention Deanna Harding Lab Number 9809049-04 _ Reported 10101198 - <br /> QC Batch Number GCO908980HBPEXB <br /> Instrument ID GCHP46 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 50 78 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 118 <br /> i <br /> Anaiytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> I ' 1 � a <br /> od Granicher <br /> Project Manager Page 10 <br />