2023-06-29_PERMIT FILE - C1981019A (2)

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RULE 3 PERFORMANCE BOND REQUIREMENTS Rule 4 Performance Standards 4-32 Revision Date: 6/13/23 Revision No.: MR-247 final locations to be disturbed will be determined by IMR. The IMR team will also at times be mitigating surface fire potential for the Axial Mine Fire and some of these activites may occur with a very small portion of Colowy’s permit boundary just north of the lower reach of the Streeter Ditch. These ground disturbing activities are not associated with the Colowyo’s mining activities and will not be required to be permitted nor bonded for in accordance with Rule 3.02.1(2). In 2016, approximately 4 acres within Colowyo’s permit boundary was affected by the moderate intensity wild land fire. The location of the fire is shown on Figure 4.12-5. The area that was burned is mostly comprised of Gambel’s Oakbrush and low density sagebrush. Additional surface disturbance within the permit boundary of approximately 1.4 acres was created to cut in a fire line to control and fight the fire. The relatively low intensity nature of the fire does not appear to warrant or require supplemental seeding; however, the area impacted by the fire line will be smoothed over and seeded with the approved reclamation seed mix. In the fall of 2016 and spring of 2017 White River Electric Association (WREA) installed and removed power lines located within the Colowyo permit boundary. The power lines that were serviced are located adjacent the Gossard Loadout facility (an overhead line will be buried) and Jubb Creek (new overhead line) north towards Moffat County Road 32. These power lines that were installed and removed are owned and operated by WREA. The final locations that will be serviced and potentially create ground disturbance will be determined by WREA. These ground disturbing activities are not associated with the Colowyo’s mining activities, and will not be required to be permitted nor bonded for in accordance with Rule 3.02.1(2). In 2017, Chevron dug up and capped an existing unused oil line in several locations just south of the Gossard Loadout facilities within the Colowyo permit boundary. These ground disturbing activities are not associated with the Colowyo’s mining activities, and will not be required to be permitted nor bonded for in accordance with Rule 3.02.1(2). At various times during the mine life of the Colowyo operation, Colowyo as a private landowner, will construct new ranch roads and/or repair or upgrade existing ranch roads within the permit boundary. These activities are not associated with the mining operation and will only occur outside of the permitted disturbance boundary. Please see Maps 19, 19B, and 19C for the permitted disturbance areas. The construction and/or repairs to these ranch roads will facilitate ongoing private landowner activities including ranching, grazing, hunting, and access for other entities which hold right of ways within the permit boundary. These ranch roads activities are not associated with Colowyo’s mining activities, and will not be required to be permitted nor bonded for in accordance with Rule 3.02.1(2). White River Electric Association (WREA) will construct, operate, and maintain a 69 kV power line from the Axial Basin substation adjacent to State Highway 13 to the Collom facilities area. This power line will be wholly owned by WREA. The ground disturbing activities associated with construction of the power line, including pole locations and roads to pole locations, are not associated with Colwoyo’s mining activities, and will not be required to be bonded in accordance with Rule 3.02.1(2). The power line will service the area post-mining in Collom. Tri-State Generation and Transmission Association, Inc. (Tri-State) owns and operates the Axial Basin Substation, which provides electrical services locally in the Axial Basin area including to