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~• Protection of Hydrological Balance - 2.05.6 (3)(a-c) <br />The purpose of this section is to assess the probable hydrologic consequences from mining of the B <br />and/or E-Seams within the current pemut azea, which includes the Box Canyon permit revision <br />area. This includes impacts to the surface water as well as the groundwater systems within these <br />areas. <br />The existing surface water and groundwater resources that may be impacted are described in <br />Section 2.04.7. Key findings in Section 2.04.7 include: (1) all of the streams in the pemut area are <br />ephemeral, except for a small portion of the Deep Creek channel ink the southeast quarter of Section <br />26 and flows occur only in response to snowmelt and significant rainfall events; (2) the vast <br />majority of springs in the permit azea are located at least 270 feet above the uppermost minable coal <br />seam; and (3) with the exception of certain fault systems, groundwater is very limited in the active <br />coal lease azea and there aze no groundwater supply wells at the mine or in the immediate vicinity <br />that could be affected by mining. There aze no "aquifers" in the permit azea that will be <br />undermined. <br />Hydrologic consequences thataze evaluated herein include: <br />• Disruption, loss, or relocafion of ephemeral stream or spring flows. <br />• Changes in ephemeral stream or spring water quality. <br />• Disruption or loss of reservoir or stock pond capacities. <br />• Disruption, loss or storage of groundwater in certain formations, which could, in turn, <br />affect the limited water resources in the area including springs and stock ponds. <br />• Changes in groundwater quality as a consequence of groundwater movement from one <br />formation to another or as a result of interception and/or storage of groundwater within the <br />mine. <br />• Wetland impacts. <br />Information contained in the following sections demonstrates that only in limited circumstances can <br />these potential hydrologic consequences occur within the West~Elk Mine pernut azea, so as to <br />become probable hydrologic consequences. A discussion of these circumstances, their <br />consequences, and protection, mitigation, and monitoring measure i is provided. <br />• <br />2.05-138 MarcA 2005PA11 <br />^~ Ko5 <br />