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Soils Information <br />Exhibit I <br />2.4 Access Road <br />The access road is cut through three parent materials: <br />Soil development was not observed on the recently disturbed Morrison formation. <br />• Soils in the upper part of the road are formed on colluviums terrace deposits (Plate 4); <br />• Soils in the lower part of the road are formed on sandstone of the Morrison Formation; <br />and <br />• Soils on historical tailings within the floodplain. <br />Soil development was evident in the upper part (0 -6 ") of the colluviums Below 6" gravels still <br />dominated the soil profile until contact with the sandstone of the Morrison Formation. <br />The historical tailings deposited on the floodplain are of unknown date or origin. These were <br />characterized by a uniform sandy loam texture, and while this material supported abundant <br />riparian vegetation, there was minimal soil development (Plate 5). A wetland mitigation project <br />was undertaken in 2008 within this material and did not show any soil development (Plate 5). <br />2.5 Mine Rock <br />Mine rock was present on the outslope of benches at the May Day No. 1, May Day No. 2, and <br />Lamb Operational Area. Mine rock was present above the Idaho Operational Area. These areas <br />were characterized by coarse, angular mine rock of gravel to cobble size with a matrix of fine <br />grained material on slopes of 30 -35 °. There was no evidence of soil development, but <br />regeneration was observed on these slopes (Plate 6). <br />3.0 Topsoil Availability <br />"Topsoil" describes soil that should be salvaged before project ground disturbance. It is suitable <br />for establishment and maintenance of plant growth, and is not necessarily the A, E, or B horizon, <br />but may be any or a combination of those horizons. For a soil horizon to be considered topsoil, it <br />had to meet the topsoil suitability criteria presented below: <br />• Less than 15% rock fragments. <br />• More than 1.0% organic matter. Soil color was used as the indicator of percent organic <br />matter. The horizon needed to have a 10YR 4/3, moist, or darker color to meet the <br />organic matter criterion. <br />• Loamy textures — silty clay loam, silt loam, loam, sandy clay loam, sandy loam, or clay <br />loam <br />• A pH between 6.5 and 7.8. <br />• Electrical conductivity (EC) of less the 8 decisiemens /m (dS /m) - estimated based on the <br />presence of visible salts; if visible salts were present the EC was considered greater than <br />8 dS /m. <br />Wildcat Mining Corporation <br />May Day Idaho Mine Complex — 112d Permit Application <br />Revised August, 2011 <br />Exhibit I — Rule 6.4.9 <br />Page 3 of 16 <br />