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1. Ground water monitoring at the site has been discontinued. <br />2. The applicant will conduct monitoring of surface water in a manner approved by the Division. The <br />monitoring plan was submitted under 2.05.6(3)(b)(iv) and includes Outfall 001, stormwater runoff from <br />areas reclaimed in the fall of 2015. The CPDS permit requires that at least two comprehensive <br />stormwater inspections are conducted a year, once in the spring and once in the fall. At a minimum, <br />one of the two inspections must be conducted during a runoff event. More details on the stormwater <br />permit can be found in Appendix 4.7-8 of the Coal Ridge No. 1 Mine PAP. <br />I. Transfer of Wells <br />No wells are transferred [4.05.14 (2)]. <br />J. Discharge of Water into an Underground Mine <br />There is no discharge of water into an underground mine [4.05.16 and 4.05.3(1)(f)]. <br />K. Stream Buffer Zones <br />There are no stream buffer zones [4.05.18(1)]. <br />L. Probable Hydrologic Consequences [2.07.6(2)(c)] <br />The Probable Hydrologic Consequences section of the original Findings Document stated that mixhgof <br />ground waters of the Rollins Sandstone and Wheeler Coal was possible due to fracturing associated <br />with mine development. Only very minor, unmeasurable water inflow occurred in the No. 2 mine tuiwl, <br />and none in the No. 1 tunnel. This is due in part to the cessation of operations at the site since 1987. <br />Portals No. 1 and No. 2 were only partially drilled (613 feet and 576 feet respectively) into the Mancos <br />shale. Therefore, it is highly unlikely that the tunnels modified the groundwater conditions. <br />Another predicted impact of the Coal Ridge No. 1 operation was water quality degradation (due to <br />natural seeps found in the area) associated with the refuse disposal area. This impact never occurred <br />because the refuse pile was never constructed. <br />Due to minor fracturing within the Wheeler coal seam and the Rollins sandstone, there was some <br />potential that ground water could cross -communicate between these two seams. However, neither of <br />these rock units are utilized for ground water within the vicinity of the mine and, due to the extreme dip <br />of the bedrock, development of water from these seams outside the permit area would be economically <br />prohibitive. For these reasons, significant impacts to ground water quality and quantity in bedrock from <br />mining at the Coal Ridge No. 1 Mine were not expected to occur. Additionally, mining never advanced <br />to the Wheeler seam, so additional fracturing of the Wheeler did not occur. <br />The alluvium in the mine area is recharged from contact with surface water of the Colorado River and <br />its tributaries, and from upland sheet flow and snow melt. The alluvial bodies adjacent to the Colorado <br />River will release water back to the surface water system during periods of low flow. Therefore, any <br />Coal Ridge Mine <br />Permit Renewal No. 7 14 December 5, 2016 <br />