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• o Ila}~ Production/Pasture These are areas of Grazing Pasture/Meadow which are capable of supporting hay crops. They are designated as such by virtue of their size and location, in view of local agricultural practice. These areas are capable of supporting up to 3 tons per acre of grass hay or 4 tons per acre of alfalfa hay. Irrigation is required for any crop use. o Forestland Most of these areas are non-commercial forest, consisting of aspen, scattered spruce, and gambel oak. o Private Structures Private structures in the study area are mostly residential and ranch-related structures. o CWI Mine Related Structures These include all structures on the Orchard Valley Mine site. Also included are structures at the well field in Stevens Gulch and the associated pipelines. • Private and mine-related structures ar~° described in more detail in Section 3.9, Buildings and Structures. o Abandoned Mine/Prospect Two significant abandoned mines are located in the study area, Farmers Mine and the Converse Mine. A smaller mine or a prospect is also located in Stevens Gulch. All of the mines were for coal extraction. 3.2 SURFACE IvATER The proposed lease area contains several streams. Only one of them, Terror Creek, is perennial. It also contains numerous small ponds, both natural and man-made. Terror Creek flows outside the proposed lease area. At tfie northeast corner of the area, it is still some 1,300 feet from the lease boundary. The distance from the lease is greater at other locations. i'error Creek has the largest drainage area of all streams (about 30.5 mi2). A reservoir, Terror Creek Res~arvuir, was constructed several miles upstream from the north lease boundary and improves the summer flow o: .he Free:;. Tner=_ are several minor drainages - 13 -