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c. rr <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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-18665 FAX(707)792 0342 <br /> = Gettler Rya%Geostrategiea _ Client Prol-1D Unocal SS#5886%270i�W—March Sampled 09/01/98 - <br /> 6747 Sierra ourt Suite J Sample Descript MW-4S 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 9809049-06 Reported 10101 198 <br /> OC Batch Number GCO908980HBPEXB <br /> Instrument 1D GCHP4B <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Dlesef 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 88 <br /> ,6 <br /> Analytes reported as N D were not present above the stated limit of detectson <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> d Granlcher <br /> Project Manager <br /> Page 17 <br />