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-21- -~ X. Climatoloeical Information and Air desources - Rules 2.04.8. 2.05.4 2.05.6(1). and 4.17. The appropriate information dealing with climatology and air resources at the site is contained in Sections 4.6 and 4.7 of the permit application. Salt Creek PSining Company has included the required climatological information for Grand Junction. No site specific information is available. Salt Creek Mining Company has applied with the Colorado Department of Health for an emissions permit to cover all aspects of the operation. The operation is in compliance with the requirements of this section. XI. Soils - Rules 2.04,9, 2.05.3(5), 2.05.4(2)(d), and 4.06 Information dealing with soils resources and topsoil handling procedures can be located in Sections 3.2, 3.3, and 4.4 of Volume I of the permit application. These Sections provide the basis for the following analysis. No topsoil was stripped prior to the existing disturbance at the P[cClane Canyon site. Future planned disturbances which will occur after permit issuance are the proposed sediment pond construction and topsoil storage. area. Topsoil will be stripped from the area of the proposed sediment pond after removal of the vegetative cover. The soils map provided by the applicant (Figure 4.4-1 - Soils Map Shoving ,d Depth Assessment) shows site specific mapping of soils information at an Order I or II Level of intensity. This map, in conjunction with the Surface Water Control Systems map (Figure 2.2-3), indicates that the disturbance will affect the Nihill Loam and Rivra Gravelly Sandy Loam Variant soils. These soils were sampled in the vicinity of the proposed disturbance and were analyzed by horizon to 70 + inches depth. The chemical data for the soils is presented in Table 4-4-6 of the application. The pH values range from 7.3 to 8.2 for these soils (Nihill and Rivra Variant). Electrical conductivity ranges from .4 co .9 mmhos/cm2 and sodium absorption ratios are .2 to 5.6. Boron contents are .1 to .2 ppm. The analyses indicace that these soils are good sources for topsoil for use in reclamation of the mine. The applicant proposes to strip the Nihill Loam soil to a depth of 12 inches and the Rivra Variant to a depth of 18 inches. This will yield a volume of 900 BCY of topsoil from the disturbed area. Part of this topsoil will be respread over one acre of the mine bench and the rest will be spread over the disturbed area of the sediment pond. These soils will be respread at a minimum depth of 4". A portion of the bench and outs lopes along the reclaimed road will not be topsoiled. These areas consist of fill which was used Eor wading the road and original ground. The applicant has supplied a few analyses from grab samples of this material. Although these analyses indica[e that the material is suitable for reclamation, it is insufficient for the ~= determ'_nation of reclamation feasibility.