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G)Jr <br /> 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (915)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9,21-0100 <br /> % Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prod ID Chevron 9-4275/980910-Z2 Sampled 09/10/98 <br /> 1680 Rogers Avenue Sample Descript MW-4 Received 09/11/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 09/17/98 <br /> Attention Fran Thie Lab Number 9809721-04 Reported 09125198 <br /> QC Batch Number GCO91798802009A <br /> Instrument ID HP9 <br /> Total Purgeable Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 500 N D <br /> Methyl t-Butyl Ether 250 6600 <br /> Benzene 50 13 <br /> Toluene so N D <br /> Ethyl Benzene 50 N D <br /> Xylenes (Total) 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 110 <br /> I <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> gory <br /> P ect Manager Page 4 <br />