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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue Suite a Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategies - -- - Client Prol ID " -Unocal 0123/1034 Central Ave _"- Sampled 03/24/98 = <br /> 6747 Sierra Court Suite J Sample Descnpt U-2 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 98031-106-03- Reported 04J09198__ <br />)C Batch Number bCO3-27980HBPEXB <br /> nstrument ID GCHPI9A <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 76 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN LYTICAL - ELAP #1210 <br /> 0 <br /> olect Manager Page orY �0 <br /> c� <br />