2022-02-07_PERMIT FILE - M2022005

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EXHIBIT D Mining Plan The proposed Mined Land Reclamation Board (MLRB) Carr Pit East permit area is adjacent to the existing Connell Carr Pit (M-2014-001) operation, which supplies aggregate construction materials to much of northern Colorado. The proposed Carr Pit East permit area contains substantiated aggregate resources to continue the supply in this region of Colorado. As resources diminish in the Connell Carr Pit, new supplies from the proposed Carr Pit East will continue to provide construction materials to meet the northern Colorado demand. Introduction and Overview The proposed Carr Pit East permit area is currently owned by Terry Grazing Association (in association with JRT Limited Partnership) and consists of rangeland utilized by the owner's cattle and bison operations. The site contains short grass prairie upland areas and approximately 5,000 feet of Lone Tree Creek, an ephemeral drainage that flows from the west to east through the property. In general, the channel of Lone Tree Creek, an ephemeral drainage, lies approximately 10 to 15 feet below the surrounding upland elevation. In areas, the drainage system is wide and contains terraces that drop gently from the surrounding rangeland to the drainage bottom. In other areas the drainage is narrow with a near vertical slope extending from the upland area to the creek channel. The upland rangeland is relatively flat with shallow landform terraces and bluffs rising to the north of Lone Tree Creek. The terraces and mining area north of the creek are patterned by swales and erosion gullies that drain toward Lone Tree Creek. Permit Boundary Definition The proposed permit boundary is consistent with the property parcel boundaries on the north, west, and south sides. The west and south parcel boundaries are also defined by the section lines for Section 22 (T1IN, R67W). The east side of the proposed permit boundary follows the west side of the Union Pacific Railroad Company Right-of-Way limit. The proposed permit boundary includes lands on both the north and south side of the Lone Tree Creek drainage. Since the proposed permit boundary will follow the section line and western site parcel line, the boundary will contact Section 21 (T1IN, R67W) and adjacent western land parcel. Therefore, the proposed permit boundary will contact the Connell Carr Pit (M-2014-001) existing permit boundary allowing for the necessary site access road. Affected Land Boundary Definition The proposed permit boundary will encompass approximately 166.1 acres with only about 143.6 acres currently planned for mining. However, the affected land boundary essentially follows the permit boundary to allow for reclamation activities and future potential mining operations. Areas not disturbed by mining may be disturbed by access roads, stockpiles, material Carr Pit East DRMS 112 Permit Application Page 4