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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek C4 94598 (510) 988 9600 FAX(5 10)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> " EA Engineering Science &Tech Client Proj ID Exxon 7-3942, 5153942 1300 Sampled 11/04/96 <br />' 3468 Mt Dlablo Blvd Ste 8100 Sample Descript V3 Received 11/05/96 _ <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/07/96 <br /> ,:Attention Tracy Faulkner _ Lab Number 9611209-03 _ _ Reported 11/12196 " <br /> QC Batch Number GC11-0796BTEX20A <br /> Instrument ID GCHP20 <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 10000 73000 <br /> Methyl t-Butyl Ether 500 N D <br /> Benzene 100 N D <br />' Toluene 100 3500 <br /> Ethyl Benzene 100 3700 <br /> Xylenes (Total) 100 17000 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 9 <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1 <br /> vin Follett <br /> Project Manager Page 3 <br />