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4k 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(9Z 5)988-9673 <br /> X117 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste A Petaluma,CA 94954 (707)792 1865 FAX(707)79Z-0342 <br /> i <br /> Blame Tech Services Client Prol ID Chevron 9-8264/980609-J1 Sampled 06/09/98 <br /> 1680 Rogers Avenue Sample Descript MW-1 Received 06/10/98 <br /> San Jose, CA 95112 Matrix LIQUID Extracted 06/17/98 <br /> Analysis Method EPA 8015 Mod Analyzed 06/18/98 <br /> Attention Fran Thie Lab Number 9806003-01 Reported 06j25f98 <br /> QC Batch Number GC0617980HBPEXC <br /> Instrument ID GCHP5A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 50 <br /> Chromatogram Pattern N D <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 87 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> ary <br /> roject Manager <br /> Page 3 <br />