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Sequoia 680 Chesapeake Dnve Redwood CGry,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-%73 <br /> Iwo Analytical 819 Sink-Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> nE- <br /> Gettler-RyanGeostrategies - Client Prod ID - --Unocal SS#5886- -- -µ~ Sampled-03%25%98 ry <br /> 16747 Sierra Court Suite J Sample Descript MW-3 Received 03/25/98 <br /> 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 9803G82-04 Reported 04J08198 <br /> QC Batch N _umber-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 79 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANA ICAL - ELAP #1210 <br /> ry <br /> Pro Manager Page 9 <br />