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z blow sand and stream deposits associated with Ennis Draw exhibit a much better quality, the dissolved sollds~concentration ranging between 750 i and 1000 mg/1. There is, apparently, subsurface flow from the southrin Ennis Draw which is sufficient to•dilute the small quantities of saline :~:,~ inflow from the Laramie, The quantities of pit inflow were estimated using a succession~of- steady-states computation procedure, together with the mining plan and the hydraulic properties of the aquifer as determined by aquifer tests on the proposed mining site. The peak inflow rate is estimated to ~be some 130 gpm and will occur when pit 6 has reached its maximum lengfh~ of 3000 ft. The inflow from both pits A and B are. included in this estimate. 'The estimated peak inflow is believed to represent a maximum ~ that can reasonably be expected to occur. Several aspects of the com- J putation tend to cause the estimates to error on the high side. The ~~ quality of the inflow should not be substantially different from the quality of existing overburden waters. The distance from the pit to paints where the piezometric surface in the overburden will remain undis- turbed is approximately 0.5 miles. Therefore, at any time, drawdown of the piezometric surface in the overburden is not expected to extend more tha~~ about 0.5 miles beyond the boundaries of the area to be mined. Unless specifically avoided, the pit will apparently intersect and cut through the stream deposits and blow sand associated with Ennis Draw in one limited area. Inflow tottie pit from these deposits may equal or exceed the inflow from the Laramie. Drawdown of the piezometric surface 1- in these deposits caused by mine inflow can be expected to be substantial. ~ ~~ It is recommended that special care be taken to protect the integrity ~_ of the ground waters in tfie blow sand and stream deposits associated with ~_ ._