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2.05.6(6) <br />the mine below. It may be possible to repair a stream that is affected by a <br />crack. First the flow interrupting crack would have to be located. Then a <br />culvert would be installed to divert the water from the crack. Then the crack <br />would be sealed with a impervious liner or other material. <br />Rockfall activity could damage and close roads and damage structures. The <br />structures at risk are the Operator's mine facilities. A large rock rolling into <br />one of the Operator's mine facilities could cause significant damage and loss <br />of life. <br />The sandstone ledge that forms Dove Cave will not be damaged since it is <br />not within the area to be affected by mining. <br />The water supply pipeline serving Pitkin Mesa may become disrupted or <br />separated due to strains induced by subsidence during subsequent permit <br />terms. <br />The WAPA transmission line that runs parallel along Terror Creek could be <br />very minimally impacted by subsidence. Potential subsidence could cause a <br />transmission tower to tilt slightly so it was out of plumb. <br />(b)(ii) The description of the worst possible subsidence consequences has <br />determined that subsidence will not cause material damage or diminution of <br />use to the Bruce Park Dams. Therefore the Applicant has prepared seismic <br />and subsidence monitoring programs per Rule 2.05.6(6)(c). <br />(b)(iii) The description of the worst possible subsidence consequences has <br />determined that material damage and diminution of reasonably foreseeable <br />use of renewable resources could result in the event of mine subsidence <br />within the permit and adjacent area. Therefore, the Operator has prepared a <br />subsidence control plan in accordance with Rule 2.05.6(6)(b)(iii)(B). <br />Since the Operator is no longer proposing to mine within one mile of the <br />Bruce Park Dam and Terror Creek Reservoir, no material damage to the <br />Bruce Park dam landslide is anticipated. <br />(b)(iii)(B) A subsidence control plan, as described in Section 2.05.6(6)(f). <br />PR -13 2.05-143- 08/12 <br />