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Atwi-iccnr Ei7vh-owttc wal Network <br /> PAGE 5 <br /> . WESTERN GEO•ENGINEERS <br /> SAMPLE ID: MW-11 DATE SAMPLED: 12/17/97 <br /> AEN LAB NO: 9712299-04 DATE RECEIVED: 12/18/97 <br /> AEN WORK ORDER: 9712299 REPORT DATE: 01/06/98 <br /> CLIENT PROJ. ID: 8603 <br /> METHOD/ REPORTING DATE <br /> ANALYTE CAS# RESULT LIMIT UNITS ANALYZED <br /> BTEX & Gasoline HCS EPA 8020 <br /> Benzene 71-43-2 5.1 * 0.5 ug/L 12/29/97 <br /> Toluene 1OB-88-3 2. 0 * 0.5 ug/L 12/29/97 <br /> Ethylbenzene 100-41-4 2.2 * 0.5 ug/L 12/29/97 <br /> Xylenes , Total 1330-20-7 10 * 2 ug/L 12/29/97 <br /> Purgeable HCs as Gasoline 5030/GCFIO 0. 05 * 0.05 mg/L 12/29/97 <br /> Methyl t-Butyl Ether 1634-04-4 23 * 5 ug/L 12/29/97 <br /> Gasoline Oxygenates EPA 8260 <br /> t-Butanol (TBA) 75-65-0 ND 100 ug/L 12/29/97 <br /> Methy-t-butyl ether (MTBE) 1634-04-4 30 * 5 ug/L 12/29/97 <br /> Di -isopropyl ether (DIPS) 108-20-3 ND 5 ug/L 12/29/97 <br /> Ethyl -t-butyl ether (ETBE) 637-92-3 ND 5 ug/L 12/29/97 <br /> t-Amylmethyl ether (TAME) 994-05-8 ND 5 ug/L 12/29/97 <br /> ND = Not detected at or above the reporting limit <br /> * = Value at or above reporting limit <br /> • <br />