2025-12-12_PERMIT FILE - M2025063 (2)

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EXHIBIT D MINING PLAN(CONT) There are four (4) types of soils found on the site. These soils are typically found throughout Weld County. They have no unusual qualities . The four 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, 3, 68 and 75 . Soil units 3 and 68 are very small areas on the south edge of the mine that contain an exposed gravel face that will be removed as mining progresses . See the SOILsMAPin the NRCS report for how the soils are distributed on the permit area. The NRCS report con- tains detailed information including the soils description, and chemical, physical, and engineering qualities, which can be found in Exhibit I - Soils . The Vegetation inventory applies to only the non-farmed area in each soil type and is provided as background for when the perime- ters of the backfilled areas are revegetated. Typically, at this time, the irrigated areas are used to grow various vegetable crops such as onions or cabbage. The majority of the backfilled area will be reclaimed as crop ground. SOIL UNIT NAME APPROX DEPT OF DEPTH OF UNIT AREA TOPSOIL, OVERBURDEN (AC) (INCHES) (INCHES) 1 Altvan loam, 0 to 1 percent slopes 39.1 12 24 3 Aquolls and Aquents, gravelly substra- 0.4 0 0 tum 68 Ustic Torriorthents, moderately steep 3.6 0 0 75 Vona sandy loam, 0 to 1 percent 2.3 12 24 slopes Based on the soils report and on site observations there are sufficient quantities of soil available to reclaim the disturbed lands to their present condition. The overburden will be placed over the imported fill to provide a root bed for the crops then the topsoil will be replaced over the overburden. The soils on the permit area that will be salvaged and replaced should be capable of growing vegetation consistent with what is required by the Reclamation Plan. The average depth of topsoil on the site according to the NRCS report and site investigations is 10 to 12 inches deep. Enough topsoil will be retained to place an average of 10-12 inches on the areas to be revegetated. As each area is stripped, it will be stockpiled for use in recla- mation or replaced on areas where backfilling is complete. In addition, there is from 24 to 36 inches of overburden on most of the site. Much of this overburden will be retained and used to 8 1/2 Enterprises LLC. December 9, 2025 Sasaki Pit 8