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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 (925)988-9600 FAX(975)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client <br />' Pro ID Chevron 9-4275/98091 O-Z2 Sampled 09/10/98 <br /> 1f80 Rogers Avenue Sample Descn t MW-2 Received <br /> 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 9809721-02 Reported 09f25198 <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 250 3100 <br /> Methyl t-Butyl Ether 12 N D <br /> Benzene 25 60 <br /> Toluene 25 13 <br /> Ethyl Benzene 25 140 <br /> Xylenes (Total) 25 38 <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 95 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA N LYTICAL - ELAP #1271 <br /> ry <br /> ct anager Page 2 <br />