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Aiwi-icai7 Ei7i,h-oiii7iei?w1 Network <br /> PAGE 4 <br /> WESTERN GEO-ENGINEERS <br /> SAMPLE ID: MW-3 DATE SAMPLED: 12/17/97 <br /> AEN LAB NO: 9712298-03 DATE RECEIVED: 12/18/97 <br /> AEN WORK ORDER: 9712298 REPORT DATE: 01/06/98 <br /> CLIENT PROJ. ID: R603 <br /> METHOD/ REPORTING DATE <br /> ANALYTE CAS# RESULT LIMIT UNITS ANALYZED <br /> BTEX & Gasoline HCs EPA 8020 <br /> Benzene 71-43-2 6.5 * 0.5 ug/L 12/29/97 <br /> Toluene 108-88-3 58 * 0.5 ug/L 12/29/97 <br /> Ethylbenzene 100-41-4 17 * 0.5 ug/L 12/29/97 <br /> Xylenes , Total 1330-20-7 150 * 2 ug/L 12/29/97 <br /> Purgeable HCs as Gasoline 5030/GCFID 0.67 * 0.05 mg/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 ND 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 />