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r <br /> Sequoia680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N \V/',get Lane Walnut Geek,CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> Gettler Ryan%Geostrategies --- Client Proj ID- J Unocal SS#5886 ---- -- Sampled 03/25/98 <br /> ,_ 6747 Sierra court Suite J Sample Descrlpt MW-5S Received 03/25/98 - <br /> Dublin, CA 94568 Matrix LIQUID Extracted 03/27/98 <br /> -r Analysis Method EPA 8015 Mod Analyzed 03/31/98 <br /> Attentton Deanna Harding Lab Number 9803G82-08 , __ Repgged 04JO8198 = <br /> QC Batch Number G00327980HBPEXB - <br /> Instrument lD GCHP196 <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 87 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> gory <br /> Project Manager <br /> Page 21 <br /> m <br />