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' Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> y 404 N Wiget 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 Proj ID� - Exxon 7-3942, 5153942 i300 - ' - Sampled 11/04/96 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript MW13 Received 11/05/96 _ <br /> s Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/07/96 <br /> = <br /> Attenfion_Tracy Faulkner Lab Number 9611209-06 _ Reported 11112/96 <br /> QC Balch Number GC11079615TE-X03A - <br /> Instrument ID GCHP03 <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 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) N D <br /> Chromatogram 050 Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 91 <br /> 1 <br /> 1 <br /> 1 <br /> I <br /> 1 <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> in Follett <br /> Project Manager Page 6 <br />