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competent sandstone that show no visible signs of failure. The northern slopes of the • impoundment are 2h:1v or flatter and were created with graded spoil materiel. DESIGN ANALYSIS General. PECOCO meets or exceeds the design end performance requirements of Colorado Mined Land Reclamation Division (CMLRD) for a permanent impoundment while utilizing as much of the existing topography as possible. PECOCO complies with the following specifications: 1. Provides a suitable water quality and a stable water level on a permanent basis for grazing end wildlife purposes. 2. Provides a safe access for the proposed water users. 3. The sire is adequate for the intended use. 4. The impoundment is suitable for the approved postmtning land use. 5. Slope protection against erosion is provided due to vegetation. Access and Sixe. PECOCO has two areas that provide adequate and safe access for livestock and wildlife. These areas are s hown on Exh ibit 7-18 end include approximately 450 linear feet along the waterline of the impoundment adjacent to the dam embankment end 130 linear v feet along the waterline at the pond inlet at the opposite end of the impoundment. Both access areas fell within (4:1 or less) slope requirements specified by the Soil Conservation Service (SCS) for safe access by livestock (see Colorado SCS Standard end Specification #378, Ponds, dated January 1989). Ltvestock have accessed PECOCO in 1991, 1992, and 1993. Big game use has been common during the same period. There have been no problems with animal safety or access since the pond's final configuration. Site analysis indicates construction of barrier fences along steeper portions would be difficult without building them away from the waterline edge. This will create en increased hazard for animals which may become trapped between the water edge and fence. Animal use will continue to be monitored et PECOCO. Fence barriers will be established if animal safety problems occur. The size of PECOCO and the volume of permanent water normally present (assuming approximately 23 acre-feet of water is available) is sufficiently large to provide adequate water supply that exceeds the needs of ontici pated livestock end wildlife numbers. The large capacity, suitable water quality, permanence of the eater supply, and I availability of access renders PECOCO suitable for the postmine land uses. 7-6g-2 Revised 06/24/93