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k. Ground l•!ater lnflor, , i~ u Predictions of gr-ound water inflov+ to the Red Canyon Itine v+ill be rude using the transmissivity, hydraulic gradient, and vertical permeability values determined in Task I. Documented calculction methods gave been selected to consider inflow to the mine via the adjacent coal seam and the mine roof (overburden). The calculations will reflect any boundary conditions revealed during the pump testing. It is occur vrhere the glacial alluvial a uif }a-r=i~iliel~ mine is near tiK• coal subcroo winrh i-s dime-t-lv iru~~~t-~~-+r~u ~•:aiPr tahlr- aqui~_ The quality of the mine inflov+ v+ill be established during the on-going mine inflow monitoring program described in ~ppendi>; (,. Tiie rate of inflow infor- oration collected at the Red Canyon Kline has indicates'. that approximately 11 gal lens per rinute is being encountered at the mine presentl~~. This information Trill be used as a check on the outcome of the inflov: calculations. C. Ground ':later- Drar:~down. The reduction in potentiometric head and/or v+ater table elevations associated with pumping of v+ater from the Red Canyon t4ine will be calculatcci for various ground o-:ater systems in hydraulic connection with the D and E Sean operations. 'he projected mine inflov+ rate r:~ill be used to assess the e>:pected drar:~downs in the coal, overburden, and glacial alluvial aquifers. The signifrcance of the projected drav:downs to vegetation and to surface r~~:'ters rill be assessed in the surface water and alluvial valley floor potions of the effort. C. !'ost-Fiininq Ground t:'ater Conditions. The post-mining r:~ater levels in the mine will be predicted based on the observation w^lls and the conditions present within the mine and at near-by mimes. The post-mining v+ater quality will be deter- mined from analyses of mine water from the old Red Canyon J~ine r:~orkings. The 5