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' Sequoia a 680 Chesapeake Dnve Redwood City CA 94063 (4t5) 364 9600 FAX(415) 364-9233 <br /> 1 404 N Wiget[.ane 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 Prol ID�- Exxon 7-3942/51539421307 µ Sampledr 04/18/96�� _ <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript MW3 Received 04/19/96 <br /> =4 Lafayette, CA 94549 Matrix LIQUID = <br /> Analysis Method 8015Mod/8020 Analyzed 04/24/96 _ <br /> -, Attention Maria Guensler Lab Number 9604E23-24 Reported05/10/96 <br /> _ <br /> IOC Batch Number GC042496BTEX17A^...� <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> IAnalyte Detection Limit Sample Results <br /> ug/L ug/L <br />' TPPH as Gas 250 :: .• 1000 <br /> Methyl t-Butyl Ether 12 17 <br /> Benzene . . . ... . .. 2 5 . .. 8o <br /> Toluene 2 5 9 5 <br />' Ethyl Benzene .. .. ... .. 2 5 .. .•• 25 <br /> Xylenes (Total) 2 5 45 <br /> Chromatogram Pattern ..... .. .. Gas <br />' Surro ates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 82 <br /> I <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> ISE I NALYTICAL - ELAP #1210 <br /> Follett <br /> Project Manager Page 5 <br /> I <br />