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Sequoia 680 Chesapeake Drive Redwood City (--A 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 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 Prof ID - Exxon 7-3942, 5153942 1300 - µ Sampled 11/04/96 <br /> 1 3468 Mt Diablo Blvd Ste B100 Sample Descnpt Pi 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-.11 _ fiepod 1 i j12j96 <br /> 1 QC Batch Number�GC110796BTEX21q __ rte-- <br /> Instrument 1D GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> 1 Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> 1 TPPH as Gas 500 2000 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 5 0 67 <br /> 1 Toluene 50 N D <br /> Ethyl Benzene 5 0 170 <br /> Xylenes (Total) 5 0 21 <br /> Chromatogram Pattern Gas <br /> 1 Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 90 <br /> f - <br /> 1 <br /> 1 <br /> I <br /> 1 <br /> 1 Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1 <br /> n FollettFlv, <br /> rotect Manager Page t 1 <br /> 1 <br />