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y Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> del 404 N Wlget Lane Walnut Creek CA 94598 (925)988-9600 FAX(9Z5)988-9673 <br /> Analytical <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX 916 )921-0100 <br /> k-a 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 792-1865 FAX(707)792-0342 <br /> is - -- - - <br /> Blame Tech Services Client Prod ID Shell 1071 North Main St _ _ Sampled 10/07/98 <br /> 1680 Rogers Avenue Sample Descript MW-2 Received 10/08/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/15/98 <br /> Attention Fran Thie Lab Number 9810727-02 _ _ Reported 10f 23198 <br /> QC Batch Number GC101598BTEX17A <br /> Instrument lD GCHP17 <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 /> X�enes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 87 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANAL CAL - ELAP #1210 <br /> Peggy Penner <br /> ect Manager Page 8 <br />