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<br />in water-level elevation for the upgradierit backfill and <br />downgradient 8.R aquifer wells. ' <br />The water-level rise in HI aquifer well, GB`i, in 1984 through <br />1947 is tho~zght to be caused by higher recharge :^ates and recovery <br />from mine dewatering. The stabilization of water levels in 1988 <br />through 199? is tho~zght to be r_aused by a decline in recharge and <br />an offsetting recovery from mining. The rise in water level in the <br />last four yews in HI aquifer well, GF4, is thought to be r_sused by <br />recovery from miring upgradier.t. Water levels in this portion of <br />the aquifer appear to have stabilized at what could now be above <br />pre-mine conditions due to the input of additional water to the <br />aquifer rust dewngradient of the mining. <br />• Each of the water levels in the three GE wells have been <br />recovering for several years from mine dewatering from the <br />adjacent operation. The rate of rise declinad in 1988 and these <br />wells showed some stabilizing in 1989 and 1990. A decline in water <br />levels has been observed in the second and third white sandstones <br />at well GE3 during the last half of 1990 and through 199?. These <br />effer_ts are thought to be due to the greater time since dewatering <br />stopped. It may also be partly attributed to lower rer_h.srge rates <br />.andior the mine dewatering that started in C air (1988) and B pit <br />(December. <br />Water <br />wells (GP3 <br />• levels for <br />fluctuation <br />1989). <br />level rises were <br />and GP4) downerad <br />199? have become <br />is are probably <br />observed in 199x7 in the HI ..=_nd Kia•] <br />ient of the A pit mining. The water <br />fairly steady, indir_..=_ting that the <br />natural since this Follows the <br />2-3 <br />