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a— ) <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819Striker Avenue Suite 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 /> Blaine Tech Services Client Prol ID Chevron 9-2033/981109-T2 Sampled 11/09/98 <br /> 1680 Rogers Avenue Sample Descript MW1 Received 11/11/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/16/98 <br /> Attention Christine Lillie Lab Number 9811696-01 Reported 11 J25J98 <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 1000 2400 <br /> Methyl t-Butyl Ether 50 7000 <br /> Benzene 10 420 <br /> Toluene 10 N D <br /> Ethyl Benzene 10 12 <br /> Xylenes (Total) 10 <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 107 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 4r gory <br /> ji Manager Page 2 <br />