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1 <br /> Sequoia 680 G�napeake 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 /> TAnalytical I ) 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 6 - <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br />' Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 10/6/98 <br /> 11315 Sunrise Gold Circle St M Project Number 910-017 IA Received 10/7/98 <br />' Rancho Cordova,CA 95742 Project Manager Mike Mitchener Reported 10/20/98 <br /> Diesel Hydrocarbons(CIO-C24)by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br />' Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch. 8100097 Dale Prepared, 10/9/98 Extraction Method, EPA 3550A <br /> Blank 8100097-SLKI <br /> Extractable Hydrocarbons 1019198 ND mg/kg too <br />' Surrogate Pentacosane 11 0 500 0 496 rf 500-150 992 <br /> LCS 8100097-BS 1 <br /> Extractable Hydrocarbons 1.019/98 121 173 mg/kg 600-140 138 <br />' Surrogate Pentacosane 0 500 0 522 500-150 104 <br /> Matrix Spike 8100097-MSI S810080-08 <br />' Extractable Hydrocarbons 1019198 125 ND 165 mg/kg 500-150 132 <br /> Surrogate Pentacosane 11 0 500 0 474 500-150 948 <br /> _Matrix Spike Dun 8100097-MSD1 S810080-08 <br /> xtractable Hydrocarbons 10/9/98 12 5 ND 162 mg/kg 500-150 130 500 153 <br /> Epll5urrogate Pentacosane 10 0 500 0 459 500-150 918 <br /> 1 <br /> 1 <br /> 1 <br /> Sequoia nalytical -7Sacramento *Refer to end of report for test of notes and definitions <br /> inda C Schneider, Laboratory Director Page 12 of 16 <br />