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Chapter 1 <br />• <br />• <br /> <br />Purpose and Need <br />final mine operations plan has not been approved <br />(see Section 1.3 Leasing Process, Authorizing Acts <br />and Relevant Policies, Plans and Programs). <br />It is also assumed that about 30 1MWs would be <br />needed over the life of the lease, assuming about <br />one acre of disturbance per pad. Associated <br />temporary road building acres assume a 30-foot <br />average disturbance width for a temporary road <br />with a 14-foot running surface. It is assumed that <br />any exploration drilling and groundwater <br />monitoring drill pads and access road construction <br />would utilize the same locations as those used for <br />methane drainage wells. <br />Subsidence and hydrology monitoring may require <br />placement of monitoring devices on the land <br />surface. These may include small subsidence <br />monuments, survey markers, stream gages, flumes, <br />etc. Access to the facilities may require motorized <br />vehicles that would use the system of existing <br />roads. <br />One additional mine ventilation facility (i.e., shaft) <br />may be needed during the life of the lease and may <br />include associated road construction. <br />At the leasing stage, it is not possible to locate site- <br />specific areas where potential post-lease surface <br />uses may occur; therefore, the surface use and <br />disturbance estimations will be used to aid the <br />effects analysis and cumulative impact analysis <br />discussed in each resource section in Chapter 3. If <br />surface uses are proposed during the life of the <br />lease (if it is issued), site-specific proposals would <br />be made based on the surface use stipulations on the <br />lease and NEPA analysis completed at that time. <br />Dry Fork Lease-By-Application FEIS <br />1-9