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Sequoia 680 Chesapeake Di-w, 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 /> Analyieal 819 Straker Avenue Suite 8 Sacramenro CA 95834 (916)921-9600 FAX(916)921-010 0 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)79Z-1865 FAX(707)79Z-0342 <br /> Blame Tech Services Client Pro) ID Chevron 9-8632/980810-T2 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descript TB Received 08/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/20/98 <br /> Attention Fran Thie Lab Number 9808853-06 Reported 08J31198 <br /> QC Batch Number GC082098BTEX02A <br /> Instrument ID GCHP2 <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 <br /> 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) N D <br /> Chromatogram 0 50 Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluena 70 130 90 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> ry <br /> anager Page 17 <br />