Laserfiche WebLink
has the potential to negatively impact alluvial groundwater. Therefore, Colowyo has established <br /> three groundwater points of compliance for the Mine at MC-04-02 (Collom Gulch), MLC-04-01 <br /> (Little Collom Gulch), and MJ-9S-01 (West Fork Jubb Creek). Stipulation 7 for Colowyo, requiring <br /> an analysis to determine the need for a point of compliance in alluvial groundwater below the existing <br /> Mine(for example, in the alluvium connected to Good Spring Creek),remains in place. <br /> IV. Topsoil Rules 2.04.9, 2.05.3(s), 2.05.4(2)(d) and 4.06 <br /> The Permit has been found to be in compliance with Rules 2.04.9, 2.OS.3(s), 2.05.4(2)(d) and <br /> 4.06 with regard to the protection of topsoil resources. The Division has approved alternative <br /> procedures for topsoil protection following removal based on a demonstration that such alternative <br /> procedures will provide more protection for the topsoil (Rule 4.06.1(2)). <br /> A. The Soil Resource <br /> A summary of the soil resource is found in the Description of the Environment section of this <br /> document. Detailed information is presented in Section 2.04.9 and Exhibit 9 of the original PAP <br /> volumes for the original permit area, while a detailed soil description information for the South <br /> Taylor and Lower Wilson expansion areas is contained in Section 2.04.9 of Volume 12 and Exhibit 9 <br /> of Volume 13 of the PAP. Order III (generalized) soil mapping for the permit area is presented in <br /> map SA of Volume 14 of the PAP; more detailed Order II soil mapping for the South Taylor and <br /> Lower Wilson areas is presented on Maps SB and SC of the PAP, respectively. Baseline information <br /> presented in the application for the South Taylor expansion area is drawn largely from a 1984 report <br /> titled "Soil Inventory-Danforth Hills Project, Rio Blanco and Moffat Counties," prepared for <br /> Consolidation Coal Company by certified professional soil scientist James P. Walsh. The Walsh <br /> report is included as Exhibit 9, Item 7, of Volume 13 of the PAP. <br /> The three major soil types at the Mine's East Pit and West Pit areas are the Work Loam, the Burnette <br /> Loam and the Campspass Fine Sandy Loam. The Work and Burnette units are generally deep, <br /> loamy textured soils with moderate permeability and high available water capacity. The physical and <br /> chemical properties of these two soils are well suited for reclamation use. The Campspass soil, <br /> however, is characterized by a shallow sandy loam A horizon less than six inches in depth. The B <br /> horizon is a heavy clay loam with hard columnar structure, which Colowyo does not propose to <br /> salvage due to the sticky, plastic properties which make it less desirable for reclamation. If spread <br /> directly on regraded spoils, the clayey soil could hamper vegetation establishment due to the slow <br /> permeability and resultant draughtiness. In addition, surface runoff from such soils would be rapid <br /> and erosion hazard would be high from both wind and water. <br /> The most prevalent soils in the South Taylor area include Burnette, Work, Lamphier, Rhone, and <br /> Northwater Loams. These are borolls, which developed from residuum or colluvium on gently <br /> sloping to rolling ridgetops, moderately steep sideslopes, and in gently sloping, concave narrow <br /> stream valleys. Shallow, rocky soils of the order entisol occur to a limited extent within the area <br /> 39 <br /> Permit Revision No.5(PR-05),G 1981-019 <br />