2022-05-06_REVISION - M1998105 (3)

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EXHIBIT I SOILS INFORMATION 1 . General A soil report was generated using the United States Department of Agriculture's NRCS Web Soil Survey (WSS)3 and is included in this exhibit as Appendix 1-1 at the end of this exhibit. The WSS provides soil data and information produced by the National Cooperative Soil Survey. The majority of the site's soil (65%) is made up of Waterdog soil while the remaining portion of the site is made up of Montrose silty clay loam (see map C-1). These primary soil types that exist at the site are described as follows. 2. Suitability for Reclamation Revegetation The two soil types provide an average of 5 inches of suitable material for revegetation. They are both considered prime farmland if irrigated, however, the majority of the site will be groundwater ponds so this will not be necessary for the post mine land use. The A-horizon of the soil profile was used as the basis for determining the topsoil stripping depth during mining operations. 3. Soil Type Descriptions 701 —Montrose silty clay loam, 0 to 2 percent slopes Map Unit Setting National map unit symbol. k2f9 Elevation:4,500 to 5,800 feet Mean annual precipitation: 6 to 9 inches Mean annual air temperature:50 to 55 degrees F Frost-free period: 140 to 180 days Farmland classification: Prime farmland if irrigated Map Unit Composition Montrose and similar soils: 80 percent Minor components:20 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Montrose Setting Landform: Stream terraces Landform position(three-dimensional):Tread Down-slope shape: Linear Across-slope shape: Linear Parent material:Alluvium derived from shale Typical profile Ap-0 to 4 inches:silty clay loam 3 https://websoilsurve .sy c.eeov.usda.gov/App/HomePage.htm. Delta Paving Gravel Pit April 2022 I-1 Lewicki&Associates