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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek,CA 94598 (92S)988-9600 FAX(9Z5)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> �IIIII� Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prot ID Shell 4445 Pershing Ave Sampled 10/28/98 <br /> 1680 Rogers Avenue Sample Descript MW-4 Received 10/29/98 <br /> San Jose CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/08/98 <br /> Attention Fran Thle Lab Number 981 OL26-05 Reported 11115/98 <br /> QC Batch Number GC110898STEX17A <br /> Instrument ID 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 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 92 <br /> Analytes reported as N D w e of present above the stated limit of detection <br /> SEQUOI YTI AL - ELAP #1210 <br /> Peggy Penner <br /> Protect Manager Page 5 <br />