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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(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(9t6)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 Prol ID Chevron 9-2033/980811-P1 Sampled 08/11/98 <br /> 1680 Rogers Avenue Sample Descript TB Received 08/14/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/20/98 <br /> Attention Fran Thie Lab Number 9808956-04 Reported OBY28198 <br /> QC Batch Number GCO82098802004A <br /> Instrument ID GC-4 <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 5 0 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 76 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> illWantrager <br /> y <br /> Page 9 <br />