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RULE 2 PERMITS <br /> <br />Rule 2 Permits 2.04-43 Revision Date: 11/1/21 <br /> Revision No.: TR-150 <br />Site-specific precipitation data obtained at the Colowyo operation are presented in Table 2.04.8-7, <br />Monthly Precipitation - Colowyo Permit Area. <br /> <br />Representative wind roses are set forth in Figure 2.04.8-1, Wind Rose – Mine Site and Figure <br />2.04.8-2, Wind Rose – Gossard Loadout. <br /> <br />2.04.9 Soils Resource Information <br /> <br />Much of the area within the permit boundary to be disturbed by mining is covered by soils that <br />provide an excellent source of plant growth media. They are deep, dark brown loam and clay loam <br />soils with physical and chemical properties that are generally well suited for revegetation. The <br />percentage of organic: matter is suitable; the cation exchange capacity is normal to high; the soil <br />texture and structure is adequate for moisture retention and aeration; the salt content is low; and <br />the sodium absorption ratio is low. <br /> <br />A portion of the area is covered by soils that are comparatively less desirable because they are <br />shallow and stoney, or have subsurface soils that are heavy clays with a hard columnar structure <br />and sticky, plastic properties. <br /> <br />The soils in the permit area are extremely variable, depending upon slope, aspect, parent material, <br />and location on the slope. Soil series mapping and descriptions are presented for use in generalized <br />volume calculations and general reclamation potential evaluations. The soils within each series are <br />so variable that on the ground staking of each soil series would not be useful for topsoil removal, <br />and would most likely result in a poor job of topsoil removal. Actual soil removal is determined at <br />each site by close coordination between reclamation personnel and equipment operators. <br /> <br />The potential of each soil for use in reclamation is essentially the same as its current potential. The <br />shallow rocky or clay soils that currently produce very little vegetation will not be very useful for <br />reclamation purposes, and the deep loamy soils will provide an excellent source of plant growth <br />media. It is quite possible that the overall productivity of the area to be mined could be increased. <br />During the topsoil removal process, the smaller amounts of poorer soils will become mixed with <br />good soils, and currently unproductive areas may become more productive. <br /> <br />Detailed data on chemical and physical characteristics are only presented for the soils in the area <br />to be mined. The disturbances associated with facility construction on lands adjacent to the mining <br />area are very small in size for each soil type, currently no additional facilities are planned at the <br />Colowyo mine. <br /> <br />Twelve (12) soil series as mapped by the Soil Conservation Service (SCS) are found within the <br />permit area. They are as follows. <br /> <br /> 03B Havre Fine Sandy Loam <br /> 14 Burnette Loam <br /> 17 Work Loam <br /> 19 Campspass <br /> 28 Forelle Loam