2018-11-05_PERMIT FILE - C1981044A (3)

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are common and result in part from the topographic protection afforded by locally dominant ridges and drainages. Information regarding wind direction and speed recorded from November 1970 to October 1972 at the Craig power station is presented in Figure 36, Craig Power Station Wind Rose. The Craig power station is located approximately one-quarter mile to the northeast of the EC Mine site. Wind information kept at the EC facility site is presented as Figure 37, EC Mine Site Wind Rose. A summary of wind direction versus wind speed for the EC mine site is presented in Table 34, Wind Data Summary. 2.04.9 SOII, RESOURCE IlVFORMATION Soil resources of the area disturbed by the EC operations are described in detail in Exhibit 12, Soil Mapping Units. This information was obtained from the United States Department of Agriculture, Soil Conservation Service {SCS). The soils found on the area disturbed by EC Energy's operations can be found on the Soils Within Ground Mapping Area Map (Map 19a). Disturbance of soils within the permit area has been labeled, for example, "Gravel Pit" or "Mining". The following soil mapping units have been identified in the disturbed area of the EC operation: Mannine Unit Number 03B OSC 7C 46C 60B 69A 101E IO1F Soil Series Name Harve fine sandy loam Absher fine sandy loam Evanston loam Kloten loam Turret sandy loam Homelake loam Torriorthents-rock outcrop complex Torriorthents-rock outcrop complex (greater than 5% slopes) Mr. James P. Walsh, Soil Consultant, was contracted by EC in 1979 to perform a detailed study and describe soils in the disturbed azeas. This study included a soils inventory of the mine facilities, disposal site, and pit 6 and 7 azeas. The results of this report are presented in Exhibit 13, Soil Inventory Mine Facilities, Disposal Site, and Pit 6 and 7 Areas. Included in this Exhibit is a description of soils and analysis of soils found in the overland conveyor corridor area. The soils found in the overland conveyor corridor include Torriorthents-rock outcrop complex and alluvial wet land soils. Neither of the soils aze of sufficient depth or quality to warrant salvaging for reclamation use. Soils within the planned permit area are identified on the Soils Map (Map 19). Descriptions of all soils found within the permit boundary are presented in Exhibit 12, Soil Mapping Units. 2.04.10 VEGETATION INFORMATION As explained in Sections 2.04.3 Site Description and Pre-Mining Land Use Information and 2.04.4 Cultural and Historical Resources Information, mining activities have been conducted within the EC Permit area as well as surrounding areas for 60 years or more. Major mining activities have been conducted at the EC site since the late 1960's, with both surface and underground operations conducted since that date. Currently, extraction of coal by surface mining methods has been terminated. The final reclamation of these surface areas is underway. The area of surface mine disturbance is known as the Williams Fork Strip Pit, and the reclamation plan for this area is presented in Exhibit 24, Williams Fork Strip Pit Reclamation Plan. With this history of mining in mind it is quite apparent that the majority of the surface disturbance had occurred prior to the regulations currently governing the coal industry. The EC mining operation is located near the confluence of the Yampa and Williams Fork Rivers. The vegetation communities located within the pemvt boundaries vary from riparian habitat found near the Yampa and Williams Fork Rivers to Xeric rock outcrops. Cottonwood- willow communities dominate the riparian habitat while Juniper or big sagebrush dominates [he upland sites. In addition to the naturally occurring communities mentioned above, an Permit Revision 04-34 2.04-27 Revised 7/2/04