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inspection in March 1986 documented inflows of 200 gallons per day. This inflow gradually slowed once this perched aquifer was completely dewatered. Inflows during 1991 failed to produce over 3 gpm for any significant period of time. Currently, mine inflows remain less than 1,000,000 gallons annually. COVCC has established an extensive monitoring system to monitor water levels in colluvial/alluvial deposits in the permit area and in the alluvium of streams overlying mine entries. Permeability tests on colluvium in the East Roatcap Creek drainage averaged 7.2x102ft/day. No significant water level fluctuations have been noted in conjunction with mine inflows. Mine inflows in the mains underlying East Roatcap Creek averaged less than 1 gpm from 1987 to 1993. The permeability of the coal aquifer was measured in 1986 at 1.4x102ft/day. This insignificant aquifer has yet to make a visible contribution to mine inflows. COVCC imports water for dust suppression from their wells in Steven's Gulch. In 1983, for example, the operator estimated that approximately 6.24 million gallons of water is consumed as moisture on the coal, 0.5 million gallons is consumed through increased humidity in the ventilation air, and less than 0.5 million gallons is lost through seepage into the floor of the mine. The 1993 approval of Technical Revision No. 22 and Permit Revision No. 3 permitted underground mine panels and their associated angles of draw, projected to the surface, to extend westward into the West Roatcap Creek drainage. Upper Cabin Spring, located in Long Draw, a tributary to West Roatcap Creek, is approximately one-quarter mile outside the projected angle of draw. This spring is the domestic water supply for residents of Stucker Mesa. Though impacts to the spring are not predicted, COVCC has executed a water replacement plan for this water resource that has been approved by. the Stucker Mesa Domestic Water Company and the BLM, whose stipulation (d);.Lease•C-37210, required that the water replacement plan be in place when mining proceeded into (or under) the West Roatcap Creek drainage basin. Details can be found in the Technical Revision No. 22 file at the Division office or at the Orchard Valley Mine office. See also COVCC permit application, Volume lA, Section 2.05.6, pages 98A-D. Surface Water - The Orchard Valley Mine area will not significantly affect the local surface water hydrology or the regional hydrology. Sediment control measures will ensure protection to stream quality. No mine water will discharge from the portals and no water will be withdrawn from the creek. An overland ditch will divert water into West Roatcap Creek thus bypassing the OVWM site. Clean water diversions above the main facilities minimize surface water runoff through the site. Mine inflows under and adjacent to the creek are predicted to be insignificant. A brief discussion of sediment control measures, subsidence impact mitigation, surface water inflow predictions and water augmentation plans follow. _2q_