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• Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> folly Analytical 819 Striker Avenue Suite 8 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 RyanLG'eostrategie-s Client Prol ID - Unocal 5886, 180137 85 ' - s Sampled 06/17/98 <br /> 6747 Sierra Court Suite J Sample Descnpt MW-4D 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 9806C26-05 Reported 07109/98 <br /> 01C Batch Number GC0624980HBPEXz --Reported <br /> - <br /> Instrument 1D GCHP19A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) with Silica Gel Cleanup <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> 0 TEPH as Diesel 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 76 <br /> • <br /> 00 <br /> 0 <br /> • <br /> 4knalytes reported as N D were not present above the stated limit of detewion <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1 <br /> ranicher <br /> ct Manager Page 12 <br /> i• <br />