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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 1 , 404 N W€get Lane Walnut Creek CA 94598 (925)988-%00 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-9865 FAX(707)792-034Z <br /> Blaine Tech Services Client Prol ID Chevron 9-8264/980609-J1 Sampled 06/09/98 <br /> 1680 Rogers Avenue Sample Descript TB Received 06/10/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/11/98 <br /> Attention Fran Thie Lab Number 9806003-05 Reported 06f25j98 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 97 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA A AL <br /> YTICALAL - ELAP #1849 <br /> Wqor <br /> 2t Manager Page 15 <br />