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Sequoia 690 Chesapeake Drive Redwood City CA 94063 {4 15) 364 9600 FAX(415) 364 9233 <br /> Sequoia <br /> 404 N �k iget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 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 Pro, ID Exxon 7-3942, 5153942 1300 Sampled 08/08/96 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript RW3 Received 08/09/96 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysts Method 8015Mod/8020 Analyzed 08/19/96 <br /> Attention Tracy Faulkner Lab Number 9608581-11 Reported 08122/96 <br />' OC Batch Number GC061996BTEX02A <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 25000 58000 <br /> Methyl t-Butyl Ether 1250 N D <br /> Benzene 250 4200 <br /> Toluene 250 5900 <br />' Ethyl Benzene 250 2600 <br /> Xylenes (Total) 250 12000 <br /> Chromatogram Pattern Gas <br />' Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 89 <br /> w <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Kevin Follett <br /> Project Manager <br /> Page tl <br />