2018-02-21_REVISION - M2008017 (7)

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Derr Pit Project DRMS 112 Permit EXHIBIT D Mining Plan Mining Limits Broken Arrow Investments, LLC proposes to mine the Northeast ¼ of Section 4, Township 5 North, Range 65 West, Sixth P.M. in Weld County, Colorado. The site lies ¼ of a mile north of State Highway 263 (8th Street) and east adjacent to Balsam Avenue. Additional permitted mining operations are immediately west of the proposed site, and directly south of State Highway 263 (8th Street). The dominant non-mining land use surrounding the property is agricultural. A portable aggregate processing plant will be located within the mining area as shown on the Mining Plan Map. The area will contain stockpiles and portable equipment as necessary to support the plant operations. All local, State, and Federal rules and regulations will be followed for the storage and handling of any fuel for the facilities. The permit boundary will encompass approximately 145.05 acres with approximately 74.95 acres being mined. The remaining area will consist of setbacks, road and utility right-of-ways, equipment storage, and plant site access. Various setbacks from adjacent roads, adjacent structures, and oil and gas infrastructure will be observed as mining occurs. See Exhibit C, Mining Plan Map, and the Slope Stability Report for information on the setbacks and their locations. All setbacks specified in the surface use agreements with the oil/gas companies will be followed. Attached are draft surface use agreements with the pertinent oil/gas companies. The final executed agreements are expected to be obtained in the near future and will be forwarded to the Division when they are available. A 150 foot setback from any existing oil/gas facility will be maintained if an agreement cannot be reached with the oil/gas companies as per the Slope Stability Report. Until an agreement can be reached or has been attempted to be reached a minimum 200 foot setback will be maintained from the oil/gas facilities. Agreements will sent to oil/gas companies and other owners’ of structures and utilities that are within 200 feet of the mine permit boundary / affected area. If agreements cannot be reached on setbacks that are less than the 200 foot minimum; the acceptable setbacks less than the 200 foot setback required by the DRMS for permanent man-made structures that are depicted on the Mining Plan Map will be analyzed by completing a slope stability analysis. See the Mining Plan Map for the mining limit configuration and information on setbacks and their locations. Products Sand and gravel will be the primary product produced from the Derr Pit Project site. The principal intended use for the sand and gravel is for road base and construction aggregates. There will also be recycled products such as concrete and asphalt that will be brought into the pit and screened and crushed for recycled road base.