2020-06-16_PERMIT FILE - M2020007 (7)

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EXHIBIT D MINING PLAN (CONT) erosion and redeposition of rock materials from the Front Range of the Rocky Mountains . The deposition of this material occurred during a time when the river was much larger than it is now. But, judging from the scarcity of large rocks found at the location, the velocity of the river must have slowed sufficiently to have dropped boulders and most large cobble before 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 mineral deposit varies from 8 to 52+ feet and the average depth on this mine is approximately 40 feet deep. This site has a zero to 10 inch layer of topsoil , consisting of loam and zero to 36 inches of a clay loam to sandy clay loam overburden that overlays the gravel . This alluvium is a well-sorted coarse gravel , sand and silt, predominantly granitic and quartzite material with minor amounts of gneiss, schist and sandstone . The bedrock under the surface gravel is a grey to grey black shale that is impervious . SOILS AND O VERB URDEN The SOILS MAP IN EXHIBIT I, shows the soil types as delineated by the National Resource Conservation Service (NRCS) and obtained from their website . The information contained in EXHIBITI/Jwill provide background levels for the site as reclamation begins on the entire area. The depths of the topsoil and overburden, shown in the following table were obtained from drill logs provided by the Cannon Land Company. There are eleven (11) types of soils found on the site . These soils are typically found throughout Weld County. They have no unusual qualities . The eleven types of natural soils on the site as determined by the Natural Resource Conservation Service and shown in the report are designated as map Units 1, 2 , 3 , 10, 16, 21, 22 , 38, 42 , 52 , and 76 . Soil units 38 and 76 are very small areas on the edges of the mine that will not be mined. See the soils map in the NRCS report for how the soils are distributed on the permit area. The NRCS report contains detailed information including the soils description, and chemical, physical , and engineering qualities, which can be found in EXHIBITI-SOILS. The Vegetation inventor applies to only the non-farmed area g Y PP Y in each soil type and is provided as background for when the perimeters of the lakes and backfilled areas are revegetated. Typically, at this time, the irrigated areas are used to grow various crops, such as corn wheat barley, hum or sunflowers . sorghum L.G. Everist, Inc - Ragsdale Reservoirs June 11, 2020 D-3