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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(413) 364 9233 <br /> 404 N Wiget Lane 'Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988-9673 <br /> JOW Analytical 819 Striker Avenue Suite 8 Sacramento CA 91834 (9 16) 921 9600 FAX(916)921'0100 <br /> 6 <br /> y:7 - <br /> I=A Engineering Science&Tech Client Proi ID Exxon 7-3942/51539421307 SamPiec! 04/18/9B <br /> 34.68 Mt Diablo Blvd Ste B100 Sample Descript 3942MW4PP Received 04/19/96 5 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 04/24/96 <br /> = Reported 05/10/96 , <br /> Attention Marla Guensler Lab Number 9604E22-05 _ _-= _ <br /> -_ter». _o — <br /> C Batch Number GC0424966TEX21 A <br /> Instrument ID GCHP21 <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 ... 100 ...---- - 430 <br /> Methyl t-Butyl Ether 50 N D <br /> Benzene .. ..... .. ... 10 10 <br /> 10 N D <br />' Toluene <br /> Ethyl Benzene .. .... .. ..... 1 0 ... 1 0 <br /> Xylenes (Total) 1 0 <br /> Chromatogram Pattern C6-C12 <br /> Weathered Gas .. ... .. ..... . .. .. <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 108 <br /> alytes reported as N D were not present above the stated limit of detection <br /> E OI NALYTICAL - ELAP #1210 <br /> Foil <br /> rolect Manager Page s <br />