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for sealing the portals is found on page 2.05.4-2R in Section 2.05.4 of ,the <br />application. Atypical seal is shown on Figure 57, and seal design for the - <br />No. 5 Portal is given in Exhibit 38. <br />The portal sealing plan for the No. 9 Mine is given on page 2.05.4-17R. <br />The Division finds this section in compliance with the requirements of this <br />section of the regulations. <br />XXII. Subsidence - Rules (2.05.6(6), 4,20) <br />The application includes a life-of-mine plan which projects coal extraction in <br />both the No. 5 and No. 6 mines. The preferred mining method is longwall, but <br />the applicant requests the right to substitute room and pillar techniques to <br />supplement extraction. Because of the efforts necessary for initial <br />development, projected subsidence is relatively limited within the initial <br />five year permit period. However, the life-of-mine plan projects mining <br />beneath State Highway 13, the D&RGW Railroad Spur, and the Williams Fork and <br />Yampa rivers and their associated alluvial valley floors. <br />Within the life-of-mine plan for the Eagle No. 6 Mine, the applicant projects <br />coal extraction which could potentially subside State Highway 13, the alluvial <br />valley floors of the Yampa and Williams Fork rivers, the Colowyo and Empire <br />Energy D3RGW railroad spur, and an AMOCO oil pipeline. The Division, in its <br />preliminary adequacy review presented comments regarding each of critical <br />structures and renewable resource lands, requesting additional information <br />regarding the potential impacts of subsidence. In the case of the AMOCO oil <br />pipeline the applicant responded by limiting extraction to no closer than 100' <br />horizontally from the pipeline. In each of the other cases the applicant <br />responded by correctly observing that the mining within the requested <br />five-year permit period would not affect the critical Structure or renewable <br />resource land. Both the Division's comments and the applicant's responses are <br />presented in Exhibit 39 to the amended permit application. <br />Each of the critical structures and renewable resource lands mentioned above <br />is considered critical by the Division. In order to avoid any possible <br />misunderstanding, the Division feels it is appropriate to restate that no <br />extraction will be approved which might potentially materially damage any of <br />these structures or renewable resource lands, until the applicant has <br />demonstrated, to the satisfaction of the Division, that no material damage <br />will result. <br />A. Inventory of Structures and Renewable Resource Lands: <br />4 <br />The amended permit application contains an inventory of structures and <br />renewable resource lands within the proposed permit area. The inventoried <br />structures and renewable resource lands are listed on Table 78 :and depicted on <br />Map 25. The applicant identifies two private residences within the permit <br />area, both of which 1te outside the area potentially affected by mining within <br />the five year permit plan area. The inventory also identifies various mine <br />facilities, an AMOCO oil pipeline, County Road 107 (vacated to Empire Energy <br />Corporation), State Highway 13, a Denver - Rio Grande and Western Railroad. <br />-62- <br />