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Hydrologir_ report (Hydro-Engineering, 1991) presents aquifer <br />properties at Trapper Mine. The permeabilities from the backfill <br />aquifers are signifir_antly greater than the ccal aquifers which <br />they r~p~ace. <br />Additional drawdown ?ast of D pit and near C pit are the main <br />changes in the 6~R w.ster level map affected by Trapper minim . <br />Small natural water level der_re.as?s rear wells GP5 and GPi have <br />slig}:t1y affected the cnato~.:rs near these wel7.s. i;radients .and <br />flow directions for the c~R aquifer in i99'2 are: similar to those <br />observed in 199. <br />Map No. 2-2 presents the water-1eve1 elevation contours for <br />the HI aquifer in th? Fail of 1992. We11s GF5. GC1. GE2. GF~1, GF3, <br />• GP7 and GMP-1 whic}i are cr~mpl?ted in the rii agi.iifer. :and bac';fi11 <br />wells GE5 and GF7, were i.tsed in the development of this map. We1is <br />GF5 and GF7 are ~^ompleterl in the backfill in t}ie area where the H <br />and I coal seams were mined. Flow in the HI aquifer has been <br />changed mainly at the A. B, C, D ar.d E pits. The overall flow <br />regime in this aquifer is clo=_e to that observed in 1991 (see <br />Hydro-Engineering. 1992}. The ground-water gradient between the <br />backfill .agi.iifer and the i.in minerl HI aquif F:r downgradient i s <br />relatively flat as it is in the CSR backfill. The main change in <br />the HI centoi.irs is near the ..>.r_tive A pit in the Pyeatt drainage. <br />The Third W.^ita Sandst.ons =q~:ifer t.ater-level elevations 3Ye <br />present?d on M=_, Vo. ?-:; We1l.s GP2. GC2, GEa, P$, S1-VJ3a and GP9 <br />• were used i^ t::a development. of this map. Flow direction in the <br />Third White Via.^.detone is msi~ily tr_,warrl the :~erth, as expected. <br />_'-15 <br />