2013-10-02_PERMIT FILE - C1981019A (3)

Home Browse Search

RULE 2 PERMITS _ . __ ~ .._ _.r_,_ ~. , ,., _... • The soils were mapped according to the standards of the National Cooperative Soil Surveys. Soil series were described and sampled in locations that were typical of the series. Soil sample collection was based on profile characteristics such as texture, horizon arrangement and depth, coarse fragment, and other diagnostic characteristics. Sample locations aze shown on Map SB. Soil samples were analyzed for the following pazameters: • pH; • Electrical Conductivity; • Saturation percentage; • Sodium Adsorption Ratio (SAR); • Boron; • Selenium; • Particle size (texture); • Coarse Fragments (in the field) • Organic Matter; and • Soluble Ca, Mg, and Na. The soil laboratory and field data were compazed with the topsoil and substitute topsoil suitability criteria shown on Table 2.04.9-5, Soil and Soil Substitute Suitability Criteria, to determine the suitability of each horizon and map unit. These suitability criteria were developed based on a review of Wyoming Department of Environmental Quality (1996) and Montana Department of State Lands (1983) topsoil and overburden suitability guidelines in conjunction with operational and sound reclamation practices for mined land reclamation. • The soils data representing the soil series were compared to the suitability criteria provided on Table 2.04.9-5. Based on these compazisons, soil horizons that exceeded the criteria provided on the table were identified and were considered unsuitable as a plant growth medium for reclamation. The salvage depth for each series was from the surface to the top of the first unsuitable horizon. Fourteen map units were identified within the disturbed area associated with the South Taylor mining area. A summary of the limitations and estimated depth of suitable soil is provided in Table 2.04.9-6, Summary of Soil Limitations and Salvage Depths -South Taylor Mine Area. The volume of topsoil available for salvage was determined for each topsoil stripping block as shown on Map 28B and aze presented in Table 2.04.9-T. Soil physicochemical data from the 18 CCC soil profiles are provided in Table 2.04.9-8 for a total of 60 soil samples. Descriptions of the soil map units identified in the South Taylor mining azea by Consol aze presented in Exhibit 9, Item 6. The South Taylor mining area contains deep soils in mostly gently to moderately sloping locations. These soils generally have favorable textures for reclamation. Soils on steep slopes tend to be shallow and excessively channery or cobbly. • Sou[h Tay]odLower Wilson- Rule 2, Pale 51 Revision Date: 4/4/07 Revision No.: PR-02