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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-%00 FAX(650) 364-9233 <br /> ,t 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(9Z5)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)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prol ID Chevron 9-9840/981223-L1 Sampled 12/23/98 <br /> 1680 Rogers Avenue Sample Descrlpt MW-1 Received 12/28/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 01/04/99 <br /> Attention Christine Lillie Lab Number 9812G28-01 Reported 01 j11 j99 <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 5o 1400 <br /> Methyi t-Butyl Ether 25 11 <br /> Benzene 050 32 <br /> Toluene 050 058 <br /> Ethyl Benzene 0 50 15 <br /> Xylenes (Total) 1 5 5 6 <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 67 Q <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> a <br /> SEQUOIA ANALYTICAL FLAP #1849 <br /> r ry <br /> {ect Manager Page 3 <br />