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rt ...t <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N WiSet Lane Walnut Creek.CA 94598 (510)988-9600 FAX(510)988-9673 <br /> ftill>� Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Btvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> t� <br /> Gettler RyanGeostrategies -Client Pro]-ID w Unocal 0123/1034 Central Ave Sampled 03%24/98 _ <br /> 6747 Sierra Court Suite J Sample Descrlpt U-1 Received 03/25/98 <br /> n Dublin, CA 94568 Matrix LIQUID Extracted 03/27/98 <br /> n Analysis Method EPA 8015 Mod Analyzed 04/01/98 <br /> Attention Deanna Harding Lab Number 98031-106-02 __ Reported 04JO9198 <br /> QC Batch Number GCO327980HBPEXB <br /> Instrument ID GCHP513 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) with Silica Gel Cleanup <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 50 82 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 86 <br /> Analytes reported as N D were not present above the stated Iimat of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> i <br /> ry <br /> Wefl'aorager Page 6 <br />