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If the coal in [he proposed lease area is mined at another date, it • would be done at a higher cost due to the need For reentry. While the economic benefits of Alternative One might still be enjoyed, they would be achieved at a higher cost and hence, less efficienCly. Or the bypassed coal may never be mined due to technical difficulties and economic constraints. There are no Mitigation Measures or Residual Impacts resulting from Alternative Two. Cumulative Impacts Cumulative impacts from Alternative One are expected to be insignificant due co the existing mining activity in the North Fork Valley, the small lease acreage and small amount of expected surface disturbance resulting from potential vent sites, access roads, and drill holes. V, MITIGATION MEASURES The following restrictions are the result of the application of the Unsuitability Criteria: After the application of Criterion Number 16, the 100-year floodplain of the North Fork of the Gunnison River (approximately 16 acres) is • unsuitable for coal mining. However, mining related disturbances may occur i£ a written finding is made by the Authorized Officer that mining will not cause a substantial threat of loss of life ar property and the interests of the public and the landowners affected by mining within the 100-year fioodplain of the North Fork of the Gunnison River will be protected. The Forest Se~•ice issued s?acial use permit to Mountain Coal Company (O1j30j92) fo: spring develo?ments and water transmission liDes located in portions of secc'_ons 21 and 22, T.13S., R.90W., 6th PM. Under Criterion 2, federal lands within such surface leases are unsuitable for coal mining, A coal lease may be issued if the underground mining will not interfere with the special use permit and the parties involved in the special use permit (Mountain Coal Company), agrees, in writing, co coal leasing. No mining re laced disturbances will occur within 100 feet of the outside line of the right-of-way of Colorado State Highway 133 within the tract. The angle of d:a•.r used to protect the State Highway from subsidence will be dic:a:ed by the approved CDMG Mining and Reclamation Plan, (the esti~aced angle of draw is conservatively estimated co be 25 degrees). However, mining related disturbances may occur if, after public novice and the opportunity for public hearing in Che locality, a written finding is made by the Authorized Officer that the interests of the public and the landowners affected by mining within 100 feet of a public road will be protected, For water depletions, as part of the Mining and Reclamation Permit Application Package, the Lessee shall furnish [o the Regulatory Officer at the Office of Surface Hining an estimate of the average ?}