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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N WISet Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-%73 <br /> 819 Striker Avenue Suite a Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Getiler Ryan%Geostrategies µ�Client Proj- !D "- Unocal SS#5886/2701 W March TSampfed�09/01/98 <br /> 6747 Sierra Court Suite J Sample Descrlpt MW-4DReceived 09/02/98 - <br /> = Dublin, CA 94568 Matrix LIQUID Extracted 09/08/98 <br /> Analysis Method EPA 8015 Mod Analyzed 09/14/98 <br /> Attention Deanna Harding Lab Number 9809049-_05 _ Reported_IJ 01198 = <br /> QC Batch Number GCO908986HBPEXB <br /> instrument ID GCHP4A <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 62 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Granicher <br /> Project Manager Page 13 <br />