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a Sequoia 680 Chesapeake Drive Redwood Qty,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 h[ Wigct Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> Iwo Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Gettler Rya n[Geosirategies - Client-ProfµIDI Unocal SS#5886 - - Sampled 03/25%98 <br /> 6747 Sierra Court Suite J Sample Descript MW-7S 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 /> l Attention Deanna Harding Lab Number_ 9803G84-12 Reported 04108j98 <br /> QC Baich Number GC0327980HBPEXB - - - -- <br /> Instrument ID GCHP19B <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 77 <br /> Analytes reported as N D were not present above the stated Itmit of detection <br /> SEQUOIA AN ICAL - ELAP #1210 <br /> ry <br /> Pr Manager Page 5 <br />