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• TABLE 4 GROUND WATER ANALYTICAL TESTING RESULTS Page 18 of 19 concentration in µg/L Sample ID DTW TPH-G BENZENE N-BUTYL 1,2-DCA EB I IPB MTBE I NAPHT N-PB TOLUENE 1,2,4-TMB 1,3,5-TMB XYLENES DELTA COLLEGE WELL 05/21/97 110 26 NA NA 3 1 NA <5 0 NA NA 092 NA NA 66 06/24/98 <50 <10 <10 <20 <10 <10 -<2 0 <10 <10 <10 <10 <30 <30 09/15/98 130 28 NA NA 44 NA ND NA NA 25 NA NA 80 12/22/98 <50 <10 <10 <10 <10 <10 <2 0 '—<I0 <1 0 <1 0 <1 0 <3 0 <2 0 03/18/99 <50 <0 50 NA NA <0 50 NA NA NA NA <0 50 NA NA <0 50 06/17/99 <50 173 NA NA 27 NA NA NA NA <10 <1 0 <3 0 33 09/16/99 270 564 NA NA 938 NA NA NA NA 64 NA NA 150 12/13/99 <50 <1 0 <1 0 <1 0 <1 0 <1 0 <2 0 <1 0 <1 0 <1 0 <1 0 <1 0 <2 0 06/15/00 138 84 <10 <1 0 55 <10 1 <2 0 <10 <10 <1 0 <1 0 <1 0 56 NOTES- Only compounds which were detected are shown on this table (1 )Samples taken on 12-19-95 were analysed outside of their holding time An additional compound, 1,2-Dichloropropane was detected in Montgomery Ward well MW-1 (5 3 ppb)sampled on 12-06-94 An additional compound, 1,2-Dichloropropane was detected in Montgomery Ward well MW-1 (1 3 ppb)sampled on 02-08-95 An additional compound, 1,2-Dichloropropane was detected in Montgomery Ward wells MW-1 (1 6 ppb)and MW-4(1 3 ppb) sampled on 06-21-95 Methylene chloride was also detected in wells MW-3 (4 8 ppb)and MW-4(2 4 ppb),respectively Methylene chloride is interpreted to be the result of laboratory contamination An additional compound,chloroform was detected in Montgomery Ward wells MW-1 (3 7 ppb),MW-5(3 0 ppb),and MW-6 (1 3 ppb)sampled on 03-11-96 An additional compound, 1,2-Dichloropropane(1 2 ppb)was detected in Montgomery Ward well MW-1 sampled on 06-19-96 An additional compound,chloroform was detected in Montgomery Ward well MW-1 (2 6 ppb)on 12-05-96 An additional compound,chloroform was detected in Montgomery Ward wells MW-1 (1 6 ppb)and MW-5(12 ppb)on 12-10-97 An additional compound, 1,2-Dichloropropane was detected in Montgomery Ward wells MW-1 (1 2 ppb)and VEW-5 (3 4 ppb)sampled on 09-16-98 An additional compound,P-lsopropyltoluene was detected in Montgomery Ward wells MW-1 (1 5 ppb),VEW-4(8 4 ppb) and VEW-5(6 2 ppb)sampled on 09-16-98 An additional compound,SEC-Butylbenzene was detected in Montgomery Ward wells VEW-4(17 0 ppb)and VEW-5 (11 1 ppb)sampled on 09-16-98 An additional compound,SEC-Butylbenzene was detected in Montgomery Ward well VEW-4(15 0 ppb)sampled on 12-22-98 An additional compound,SEC-Butylbenzene was detected in Montgomery Ward well VEW-4(2 8 ppb)sampled on 06-18-98 An additional compound,P-Isopropyltoluene was detected in Montgomery Ward well MW-2(1 1 ppb)sampled on 09-16-99 1232P ANALYTICAL-DATA 1 ENVIRONMENTAL,AUDIT,INC