2022-11-18_PERMIT FILE - M2022048 (5)

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MINING PLAN AND TIMETABLE EXHIBIT D(CONT) sufficiently to have dropped boulders and most large cobble be- fore it reached this point . This type of material is typically found from south of Denver to the Colorado state line along the South Platte River. The thickness of the gravel deposit in West Farm Reservoirs varies from 27 to 75+ feet and the average depth is approximately 50+ feet . This site has a 10 to 12 inch layer of topsoil, con- sisting of loam and zero to 5 feet of a clay loam to sandy clay loam overburden. The alluvium is a well-sorted gravel, sand and silt, predominantly granitic and quartzite material with minor amounts of gneiss, schist and sandstone. The bedrock under the surface gravel is part of the Laramie formation and is a grey to grey black shale that is impervious . SOILS AND OVERBURDEN The information presented in this section is an overview of the Soils and Overburden types, quantities and depths found throughout the property, and also how these materials will be integrated into the mining and reclamation plans . The informa- tion has been obtained from the National Resource Conservation Service (NRCS) website, and from drilling reports . The NRCS Soils Report and SOILS MAP IN EXHIBIT I/J, show the soil types delineated in the permit area and will provide background levels for the site as reclamation begins on the entire area. There are seven (7) types of soils found on the site. These soils are typically found throughout Weld County. They have no unusual qualities . The soils are designated as map Units 3, 10, 21, 22, 39, 41 and 68 . Soil unit 68 lies along the slope from the upper level to the lower level that will not be mined. The NRCS report contains detailed information including the soils description, and chemical, physical, and engineering qualities . he depths of the topsoil and overburden, shown in the following table, is from a drilling report on the property. L.G. EVERIST, INC-WEST FARM RESERVOIRS November 2022 7