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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (9Z5)988-9600 FAX(925)988-967,3 <br /> 819 Sinker Avenue Suite S Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Ar m <br /> nalytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prol ID Chevron 9-4275/980624-Ji Sampled 06/24/98 <br /> 1680 Rogers Avenue Sample Descript MW-9 Received 06/25/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/30/98 <br /> Attention Fran Thie Lab Number 9806G68-09 Reported 07109198 <br /> QC Batch Number GCO63098BTEX02A - <br /> Instrument ID GCHP02 <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 125 320 <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 92 <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA 'CAL - ELAP #1210 <br /> ry <br /> r ect Manager Page 18 <br /> I - <br />