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If the coal in the proposed lease area i5 mined at another date, it . " mou:.d 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 efficiently. 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 HEASIIRES 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 Nozth rork of the Gunnison P,iver (approximately 16 acres) is • unsuitable for coal mining. However, mining related disturbances may occur ii 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 flood?lain of the North Fork of the Gunnison River will be protected. The Forest Service issued s?ecial use permit to Mountain Coal Company (01/30/92) for spring deveio?mencs and water transmission LiDes located in portions of sections 21 and 22, T.13S., R.90W., 6th PM. Under Criterion 2, federal lands within such surface leases are unsuitable for coal Wining. A coal lease may be issued if [he 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, to coal leasing. No mining re laced disturbances.vill occur within 100 feet of the outside line of the right-of-way of Colorado State Highway 133 within the tract. The angle of draw used co protect [he State Highway from subsidence will be dictated by the approved CDMC 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 notice and the opportunity for public hearing in the locality, a written _`inding is made by the Authorized Officer that the interests of the public and the landowners affected by mining ~wichin 100 feet of a public road will be protected. .For water deolecions, as part of the Mining and Reclamation Permit .4pplicacion Package, the lessee shall furnish to the Regulatory • Officer at the Office of Surface Mining an estimate of the average 23