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. I F/I 22 <br />Surface Mining Near Underground Minin <br />While there are a number of surface mines in the general vicinity of the mine <br />area, all of these mines are inactive, as well as the GEC Pit and are located well above <br />(three to four hundred feet) the interval to be mined, and none are within angle of <br />draw limits or within four hundred feet of the ultimate limits of underground mine <br />workings. Consequently, the provisions of this section are not applicable. <br />Subsidence Survey, Subsidence Monitoring., and Subsidence Control Plan <br />The Subsidence Survey, Subsidence Monitoring and Subsidence Control Plan <br />prepared by Rocky Mountain Geotechnical (RMG) for Dorchester Coal in 1983, <br />addresses all applicable regulatory requirements and has been utilized as the <br />subsidence plan for EFCI since acquisition of the mine from Dorchester in 1985. <br />The RMG subsidence plan and supporting monitoring data is contained in Exhibit 23, <br />Subsidence Information. Since measured subsidence is well within the range <br />predicted by RMG in the original mine permit and progressive subsidence has <br />effectively ceased, EFCI proposed and the CDMG approved elimination of <br />quarterly and semi - annual subsidence monitoring and reporting at the end of <br />2003. In order to confirm and document long -term surface subsidence effects, <br />EFCI OW conductutwo additional subsidence surveys during years 3 and 9 (2006 <br />and 2013) of the reclamation liability period. These final surveys '�� <br />documented by subsidence monitoring reports submitted to the DRMS. Changes <br />to the monitoring plan are discussed in the following sections. <br />Inventory of Structures and Renewable Resource Lands. As part of the <br />subsidence plan, an inventory of structures and renewable resource lands was <br />conducted for those areas that have been or will be undermined by either <br />Dorchester or subsequent EFCI operations. An itemized list of potentially affected <br />structures is as follows: <br />• The Thompson Ranch Buildings (2 houses and barn) <br />• County Road 92 <br />• County Road 15 <br />• Refuse Disposal Area <br />RN-06 2.05.6 -55 Revised: 8/2014 <br />