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t <br /> Sequoia680 Chesapeake Drive Redwood QM CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Viget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> X117 Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> Gettler Ryan[Geostrategles Client Pro l ID Unocal SS# 5886 Sampled 03/25/98 - <br /> 6747 Sierra Court Suite,l Sample Descnpt MW-51) 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 9803G82-07 Reported 04f08�98"_ <br /> -- <br /> dC 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 52 <br /> 0 <br /> analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager Page 18 <br />