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and 564 feet in the Sage Creek drainage. The one foot drawdown radius in the Wadge Coal was predicted to be 369 feet inn the Grassy Creek drainage and 468 feet in the Sage Creek drain;ge. Radial distances to the one foot drawdowns in the Wolf Creek Overburden and Wolf Creek Coal in the Sage Creek drainage: were pr;dicted to be 452 and 491 feet, respectively. Because the drawdowns due to pit inflows will be mostly contained within the leasehol~9 area, and adjacent water users are located beyond the orle foot drawdown contours, no significant impact on groundwater use: due to pit inflows is predicted. I,__pacts of Production Well Seneca Coal Company predicted that maximum drawdowns in the Trout Creek aquifer resulting from nine years of pumping in the Yoast Production Well would be 186 feet. After 20 vears of recovery, the residual drawdown within one mile of the well is predicted to be less than two feet. The radial distance to the one fa~ot drawdown contour after 20 years of pumping was predicted to be 10 milers. The only knwon Trout Creek wells within this radius are associated with the Twentymile Coal Mine and are between seven adn ten Hole from the proposed Yoast Mine well. The drawdown at this distance from the Yoast Mine well should not significantly impact these wells. Streamflow depletions in the Xampa River, Fish Creek, Iv[iddle Creek and Trout Creek channels due to changes in the: groundwater regime were all predicted to be less than 0.55 acre-feett per yea~~. However, streamflow depletions in Sage Creek and Grassy Creek were predicted to be higher: 4.9 acre-feet per year in Sage Creep: and 5.8 :acre-feet per year in Grassy Creek. Impact of Replaced Spoil on Groundwater Seneca Coal Company predicted that the replaced spoil would have a 25% higher hydraulic conductivity than the tmdisturbed material. Other than that, the primary effect on groundwaterr would be degradation of quality with respect to total dissolved solids (TDS). Seneca Coal Company predicted that the incea:~e in TDS concentrations in the bedrock aquifers will rarlge from 70% in the Wadge Overburden to over 300% in the V/adge G>al. These predictions are for groundwater in close proximity to the resaturated spoil. As groundwater migrates away from the resahirated spoil, mixing, dilution from unaffected rechazge, and geochemical changes will decease the TDS concentrations. The maximum predicted Yoasl Mine 26 ~ July Q 1995