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' 68o c—sapeake Drive Redwood City CA 9406.5 (650) 364-9600 FAX(650) 364-9Z33 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-%00 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (9t6)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North 5t D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br />' Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 1016198 <br /> 11315 Sunrise Gold Circle St M Project Number 910-017 1 Received 1017198 <br />' Rancho Cordova,CA 95742 Project Manager Mike Mitchener Reported 10/20/98 <br /> Diesel Hydrocarbons (CIO-C24)by DHS LUFTIQuality 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. BIOQM Date Prepared, 1019198 Extraction Method. EPA 3550A <br /> Blank 8100097-BLK1 <br /> Extractable Hydrocarbons 10/9/98 ND mg/kg 1 00 <br /> Surrogate Pentacosane 11 0 500 0 496 10 500-150 992 <br /> LAS 8100097-BSI <br /> Extractable Hydrocarbons 10/9/98 125 173 mg/kg 600-140 138 <br />' Surrogate Pentacosane 0 500 0 522 500-150 104 <br /> Matrix Spike 8100097-MSI 5810080-08 <br /> Extractable Hydrocarbons 1019198 125 ND 165 mg/kg 500-150 132 <br /> Surrogate Pentacosane 0 500 0 474 500-150 948 <br /> Matrix Spike Dup 8100097-M51)1 S81048OL-08 <br /> Illv <br /> etractable Hydrocarbons 10/9/98 125 ND 162 mg/kg 500-150 130 500 153 <br /> Irprurrogate Pentacosane " 0 500 0 459 rr500-150 918 <br /> 1 <br /> 1 <br /> 1 <br /> Sequoia alytical -Sacramento *Refer to end of report for text of notes and definitions <br /> oda"CS c neider, Laboratory Director Page 8 of 13 <br /> t� <br />