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will help to eliminate some of the uncertainties of variable pumping rates and provide "near static" water level measurements. In theory the cone of influence around a pumping well extends to infinity in an infinite aquifer and to the boundaries of a bounded aquifer. Thus, the Okie Plaza well does lie within the radius of influence of the No. 5 Mine Wells, but the effect of pumping the latter is believed to be sufficiently small that it can be neglected in measuring "static levels" at the Okie Plaza well following the proposed recovery period. The drawdown at the Okie Plaza well caused by the historic pumping at the No. 5 Wells is estimated to be on the order of one foot. This indicates that the proposed Okie Plaza Well measurements should reflect overall equilibrium potentiometric levels in the Trout Creek Sandstone to within one foot. In estimating the drawdown at the Okie Plaza Well due to pumping at the No. 5 Mine Wells near the No. 5 Mine portal, the following data and assumptions were used: • The aquifer is confined, and assumed to be semi-infinite, flat lying and homogeneous; • The sandstone aquifer thickness ranges from 62 to 91 feet over the property; the hydraulic conductivity lies between 0.1 and 1 ft./day; the transitivity thus lies between 6 and 91 sq. ft./day. • The storativity is assumed to lie between 0.001 and 0.0001. • The pumping rate at the No. 5 Wells is 2.5 gallons per minute, which was the average for 1992. • The distance between the Okie Plaza and No. 5 Mine wells is 5,200 feet. • The hydraulic conditions will be between steady-state, and unsteady state at 500 days. The assumption of homogeneity is the most forced, but it still allows bounding estimates. That is, in homogeneities such as fracturing should cause actual drawdown to be less than calculated, unless the fracturing (improbably) directly connected the two wells hydraulically. There is just 30 feet difference in elevation in the aquifer between the two wells, so that the assumption of a flat lying unit is appropriate. The table shows that the best estimate for drawdown using the Theis, non-steady solution for 500 days of pumping is on the order of one foot. The bounding range for this estimate is 0.2 to 7 feet. The high estimate of 7 feet drawdown would apply only in a uniformly poor-yielding siltstone.