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ENVIRONMENTAL ASSESSMENT <br /> M, <br /> R. <br /> Photo 3-1 The largest subsidence feature observed to have formed, located above King I Mine. It <br /> occurred in an area where soils had been stripped for a road;therefore, it is very visible.The area was <br /> pillared in 2006 and the photo was taken in 2013 after the subsidence appeared. <br /> As presented in Chapter 2, compliance with CDRMS Regulation 2.03.7(3), Relationship to Areas <br /> Designated Unsuitable for Mining, addresses risk of subsidence from underground mining to adjacent <br /> surface property. The regulation restricts mining to an area 300 ft outside of an occupied dwelling. <br /> Furthermore, OSMRE and CDRMS typically requires that "angle-of-draw" is considered in determining a <br /> distance where mining is not permitted. Angle-of-draw accounts for the possibility that the effects of <br /> subsidence may extend beyond the actual extent of mining, typically figured at a 35-45-degree angle <br /> extended to the surface. No residential structures occur within the angle of draw for the proposed mining <br /> and therefore no impacts on the structural integrity of residences would occur. For added assurance, <br /> GCCE has agreed to the additional design features presented in Appendix C. <br /> Dunn Ranch Area Coal Lease by Application COC-78825 and Mine Plan Modification EA 3-31 <br />