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-2- The description should cover all areas proposed or likely to be affected by planned or probable subsidence. The Division recommends that the applicant contact Mr. Foster Kirby at the O.S.M. Western Technical Center to determine if any additional field reconaissance of unsurveyed areas will be required. IV. Geology - Rules 2.04.5 & 2.04.6(2) Section II. B. of the application needs to be revised to provide a site-specific description of the geology for the three proposed lease areas, including a map and cross sections prepared to the standards of ~ Rule 2.10 which shows the nature, depth, and thickness of the coal ~ seams to be mined, any coal or rider seams above the seam(s) to be mined, each stratum of the overburden, and the stratum immediately below the lowest coal seam to be mined. The Division suggests that the coal geology description, geologic cross sections and other geologic maps contained within the applicants R2P2 ~ plan be incorporated into the permit application to comply with the `'~ above requirements. V. Hydrologic Balance - Rules 2.04.5, 2.04.7, 2.05.3(4), 2.05.6(3), 4.05 The application should be amended to provide a description of the measures to be taken during and after the proposed mining activities to ensure the protection of the quality and quantity of surface and ground water within and adjacent to the new lease areas from adverse effects ~~ of underground mining activities. The discussion should focus on ~ „r' protection measures to be utilized to protect the Scullion Gulch ~ ~f drainage from the adverse effects of subsidence. _ The applicant should provide a plan for monitoring surface water in ~ y Scullion Gulch, Lincoln Reservoir and Halandras Reservoir in a manner >~ '~ r R ov^~ c sufficient to detect an than es in water uantit and ualit brou ht Y 9 q Y q Y 9 „ PpOV~pA about as a result of underground mining activities. Aground water ~t~rr monitoring plan should also be provided for monitoring depth-to-water ~,,,~,:,~R~~ in the upper sandstone facies, siltstone and coal facies, and Lower sandstone facies in each of the proposed new lease areas. The monitoring plan should include a commitment to begin monitoring one year prior to initiating mining activities within a given lease area. The determination of probable hydrologic consequences presented in the application needs to be revised to discuss the effects of mining on the hydrologic regime and the quantity and quality of surface and ground water systems within and adjacent to each of the new lease areas.