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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 40411 Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> �IIII� Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> 1Gettler RyanGeostrategies --_ - "--Client MProj ID Unocal SS#5886 µ--- Sampled 03/25/98 <br /> r6747 Sierra Court Suite J Sample Descnpt MW-1 Received 03/25/98 <br /> 3 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 04108198 " <br /> CC Batch Number GC0327980HBPEXB - <br /> Instrument ID GCHP19A <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 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 53 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> 5 e <br /> �g" <br /> AJWV90rY <br /> Project Manager Page 3 <br />