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-lo- IV. Geology - Rules 2.04.5 and 2.09. C, (2) For a description of the geology of the area, please refer to Section VIlI~ "Probable Hydrologic Consequences of Mining and Cumulative Hydrologic Zmpacts Study", page 14 of this document. The geology sections of the permit application are found on pages 23 through 37 of Section 2.04 and in Exhibit R All of the identified concerns per- taining to the geology description raised in the April 23 and December 4, 1991 Preliminary Adequacy Reviews of the permit application by the Division have been resolved. The application is in compliance with the requirements of this section. V. Hydrologic Balance - Rules 2.04.5, 2.09.7, 2.05.3, 2.05.6(3) and 4.05 A) Surface waters. Blue Ribbon Coal Company has provided a description of the hydrologic regime for both the mine and the region sufficient to describe the pre- vailing hydrologic balance. The narrative discussion of the surface water system can be found on pages 39 through 45i, Section 209 of the permit application. Drawings within the permit application pertaining to the surface water system are Exhibit M - Area Drainage Map and Exhibit P (2 drawings) Hydrologic Area Map. The discussion of the potential impacts of mining and the system for impact mitigation can be found on pages 120-I24, Section 2.05(3) "Protection of the Hydrologic Balance" of the permit application. The Blue Ribbon Ptine is located within the watershed of Hubbard Creek. Hubbard Creek is a perennial tributary of the North Fork of the Gunnison River. Hubbard Creek has been altered from its natural state by the Over- land Reservoir and Ditch system, a collection and diversion system. within the permit area there is a small ephemeral drainage on the left bank of Hubbard Creek. This drainage flows only in response to precipitation events and occasionally during the snowmelt season. There are no known perennial springs in the permit area and a spring survey conducted by the applicant identified only one ephemeral spring within the permit area. For a thorough discussion of the surface water hydrology of the region and a discussion of the potential impacts of mining on surface waters, please refer to the Description of the Hydrologic Environment and the Probable Hydrologic Consequences of Mining subsections of Section VIII, "Probable Hydrologic Consequences of Mining and Cumulative Hydrologic Impacts Study," page 32 of this document.