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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> Se 404 N Wiger lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)9Z1-9600 FAX(916)921-0100 <br /> fWAnalytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> _ Blaine Tech Services Client Prol ID - Shell 2575 Country Club Blvd Sampled 07/29/98 <br /> 1680 Rogers Avenue Sample Descrlpt Dup Received 07/30/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/11/98 <br /> Attention Fran Thie Lab Number 98071-188-15 Reported OBJ19198 <br /> QC Batch Number GCO81198BTEX05A <br /> Instrument 10 GCHP5 <br /> Total Purgeable Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 100000 N D <br /> Methyl t-Butyl Ether 5000 310000 <br /> Benzene .. 1000 15000 <br /> Toluene .. 1000 15000 <br /> Ethyl Benzene .. 1000 1900 <br /> Xylenes (Total) 1000 11000 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 72 <br /> Analytes reported as N D were not present above the stated hrnit of detection <br /> SEQUOIA L I AL - EL4P #1271 <br /> Peggy Penner <br /> Project Manager Page <br />