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i) <br /> •} <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N wlget Lane walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> Analytical <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)421-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan%Geostrategies -C—lie-nit Prof ID Unocal 0123/1034 Central Ave Sampled 03/24/98 <br /> 6747 Sierra Court Suite J Sample Descnpt U-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- 9803H06-04 __ Reported 04109198 <br /> QC 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 70 <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - SLAP 01210 <br /> PoWjec?/- <br /> Manager Page 14 <br />