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-IS- y. Hydrologic Balance: Surface water - Rules 2.04.5, 2.04.7, 2.05.3, 2.05.6 For a description of the surface water hydrology of the mine area and a discussion of the impacts of mining on surface water, refer to the Surface Water Hydrology portion of Section IX, Probable Hydrologic Consequences and Cumulative Impact Assessment of this document. The surface water hydrology information, sediment control and protectionof the hydro- logic balance sections of the application have been reviewed by the Division. The surface water information sections can be found on pages 47-1a through 49 of the Bear No. 1 and No. 2 application, and pages 2.04-31 through 2.04-33 of the Bear No. 3 application. Drainage and sediment control text, plans and calculations are presented on pages 62 through 65 of the first application, and 2.05-22 through 2.05-23 and in Exhibit lI of the second application. In the P.A.R. of May 15, 1981, the Division noted a number of problems regarding sediment and drainage control for the Bear No. 1 and No. 2 portals and facilities area. As noted in the Division's adequacy letter of January 18, 1982, a remaining concern is the sediment control Treasures to be employed following the Highway Department's relocation project which will impact sedimentation ponds No. 2 and No. 2. In a meeting on August 24, 1981, involving representatives of the Bear Coal Company, the Division and the State Highway Department, the problems resulting from the Highway L~parttrent's proposed highway and river channel relocation project through the Bear permit area were discussed. Beginning in the spring of 1982, relocation of Colorado Highway 133 will bring the highway through a major portion of the Bear No. I and No. 2 loadout facilities. River channel relocation associated with the highway project will move the North Fork of the Gunnison closer to the Bear No. 1 and No. 2 facilities area. The project will remove sediment pond #1, north of the river, and sediment pond #2, south of the river. Bear Coal Company has requested an exemption from the sediment pond requirements for the areas currently controlled by ponds #1 and #2. Pursuant to Rule 4.05.2(3), the Division is granting the requested exemption. The affected area is small, Iess than 10 acres, and relatively level. All surface facilities will be removed, coal material disposed of and the site regraded, top- soiled and seeded by the fall of 1982. Immediately following topsoiling, the site will be stabilized with straw mulch. The reseeded vegetation stand will provide erosion protection in succeeding years. For these reasons, the Division finds that sedimentation ponds are not necessary for the drainage to meet the effluent limitations of Rule 4.05.2. Reconstruction of sediment ponds would create additional disturbance in the reclaimed area. There will be no mixture of surface drainage with discharge from underground mine workings. The runoff conditions for these sites will be closely monitored by the company and the Division through regular inspections. If field inspections find that problems with sediment is occurring, then mitigation measures will be undertaken. The only other remaining surface water concern with respect to the Bear No. 2 and No. 2 mines is that regrading operations restore the natural drainage patterns in the reclaimed area. In the P.A.R, of May I5, 1982, the Division stated that although page 62 of the application indicated that no alteration of natural drainageways had occurred at the Bear Mine, the plan referenced a permanent diversion in Figure 2.09.3(2)(q)-1. The Division requested a detailed design for the diversion and noted