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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Fane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> �III� Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9Z1-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> i ettier Ryan/Geostrategies -J Client Pro] ID Unocal 5886, 180137 85 Sampled 06/17/98 _ <br /> 6747 Sierra Court Suite J Sample Descript MW-7D Received 06/17/98 <br /> Dublin, CA 94568 Matrix LIQUID Extracted 06/24/98 <br /> Analysis Method EPA 8015 Mod Analyzed 06/26/98 <br /> Attention-Deanna Harding Lab Number 9806C27-11 Reported 07f09j98 <br /> QC Batch Number GC0624980HBPEXZ - <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 63 <br /> • <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1_ ,.— <br /> *Granlcher <br /> ct Manager Page 2 <br />