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-18- included in the permit application. However, a schedule for reclamation and restoration of this area has not been given. In order for this finding to be valid, a timetable for this reclamation activity must be included in the permit application. The following stipulation requires this. Stipulation No. 5 WITHIN 60 DAYS OF PERMIT ISSUANCE, THE PERMITTEE MUST AMEND THE RECLAI4ATION TIMETABLE UNDER RULE 2.05.4 OF THE PERMIT APPLICATION TO INCLUDE RECLAIM TION AND RESTORATION OF THE DISTURBED AREA ASSOCIATED WITH THE MIDDLE CREEK MINE UFFICE COMPLEX. With the acceptance of this stipulation, the application will be in compliance with this Section. VIII. Cumulative Hydrologic Impact Study and Probable Hydrologic eauences - Ruies Under Rule 2.07.6(2)(c), the Division is required to make an assessment of the probable cumulative impacts of all anticipated coal mining in the general area on the hydrologic balance and to make a finding that the operations proposed in the permit application have been designed to prevent material damage to the hydrologic balance outside of the proposed permit area. This section of the findings document is divided into the following five major sub-sections: Definition of Anticipated Mining in the General Area; Description of the Hydrologic Environment; Probable Hydrologic Consequences of the Energy No. 3 Mine; Cumulative Hydrologic Impact Study; and, Summary and Findings. Definition of Anticipated Mining in the General Area The Cumulative Hydrologic Impact Study (CHIS) presented below assesses the projected cumulative hydrologic impacts of all anticipated mining operations in the general area of the Energy Mine No. 3. Anticipated mining is defined as the proposed life-of-mine areas for the existing coal mines and those proposed coal mines for which complete permit applications have been submitted to the Division. The surface water and ground water general areas for this CHIS do not coincide (Figure 1). The surface water general area includes all of the Yampa River Subbasin above the U.S.G.S. Gaging Station at Hayden. The ground water general area is smaller because of structural limitations as discussed below. Bedrock structural basins strongly influence the direction of ground water f]ow in contiguous regional aquifers and thus, these structural basins define the limits of the areas considered to be hydrogeologically interrelated. Generally, this means that the ground water impacts of all mining within a distinct structural basin be analyzed and the sum of those impacts be considered as they affect surface water systems. The Energy No. 3 Mine is located within the Twentymile Park Structural Basin (Figures 1 and 3). The ground water portions of this CHIS are limited to analyzing the cumulative impacts of anticipated mining within this basin.