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XV. Subsidence Control <br />Section 2.05.6(6) of the permit contains an inventory of structures and renewable resource lands <br />within the permit area, and a discussion of the possible consequences of subsidence on those <br />structures and lands. A subsidence monitoring plan is also included in this section. A report <br />containing subsidence predictions, impacts and possible mitigation measures may be found in <br />Exhibit 15 of the permit. <br />A. The applicant has proposed a subsidence control and monitoring plan in accordance with <br />Rule 2.05.6(6) and has committed to adopt all measures discussed in the plan, in order to <br />reduce the likelihood of subsidence, prevent material damage, or mitigate the effects. The <br />Division approved the plan (4.20.1(2) and 4.20.3(1)). <br />Because of concerns about allowing mining within one mile of the Terror Creek <br />Reservoir and Bruce Park Dam, Stipulation No. 9 had been added to the permit <br />application to address concerns about subsidence and seismicity effects on the dam. With <br />approval of PR-10 and PR-11, which approved mining within one mile of the dam and <br />reservoir, a comprehensive subsidence and seismicity monitoring program had been <br />established. Therefore, Stipulation No. 9 was terminated. However, with the approval of <br />PR-12, mining within one mile of the dam and reservoir was terminated, as was the <br />requirement to monitor the structures. <br />XVI. Concurrent Surface and Underground Mining <br />This section does not apply to the Bowie No. 2 Mine permit application. <br />XVII. Operations on Alluvial Valley Floors <br />A. The Division has determined that an alluvial valley floor does not exist within the <br />affected area; however, an alluvial valley floor does exist in the adjacent area. Therefore, <br />the following findings are made for the alluvial valley floor located along the North Fork <br />of the Gunnison River, downgradient from the Bowie No. 2 Mine. <br />i. The Division finds that activities proposed by the applicant will not interrupt, <br />discontinue, or preclude farming on the alluvial valley floors that are irrigated or <br />naturally subirrigated (4.24.3(1)). <br />ii. The proposed activities will not materially damage the quantity or quality of <br />water in the surface or ground water systems described above (4.24.3(3) and <br />2.06.8(5)(a)(ii). <br />iii. The proposed activities will comply with the requirements of the Act and the <br />Regulations, with respect to alluvial valley floors (2.06.8(5)(a)(iii)). <br />iv. Surface coal mining and reclamation operations will be conducted to preserve the <br />essential hydrologic functions of alluvial valley floors outside the permit area <br />throughout the mining and reclamation process (4.24.2). <br />B. An environmental monitoring system shall be installed, maintained, and operated by the <br />permittee to ensure the protection of all alluvial valley floors during surface coal mining <br />36