2024-08-28_PERMIT FILE - C1981019A (2)

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RULE 4 PERFORMANCE STANDARDS Rule 4 Performance Standards 4-33 Revision Date: 6/24/24 Revision No.: MR-255 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 Colowyo. Tri-State will be expanding the footprint of the substation within the permit boundary on the east and west side of the current substation location. The ground disturbing activities from the expansion of the Axial Basin Substation 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). In 2018, approximately 22 acres within Colowyo’s permit boundary (outside of the disturbance boundary) was affected by the wild land fire caused by a lighting strike. The location of the fire is shown on Figure 4.12-6. The area that was burned is mostly comprised of pinyon juniper and low- density sagebrush. Because the fire was not related to Colowyo’s mining activities, Colowyo, as the surface landowner will reseed or managed the post-fire area, as it deems appropriate. In 2019, the surface landowner replaced a culvert under the Taylor Creek Access Road (please see Map 25C for location of the road) to support long-term access up the Taylor Creek drainage. Minimal ground disturbance was associated with replacing the culvert. Since the activity is related to the surface landowner, it is not permitted and bonded for in accordance with Rule 3.02.1(2). In 2019, approximately 13.5 acres within Colowyo’s permit boundary (outside of the disturbance boundary) adjacent to the Collom Haul Road was affected by the wild land fire caused by high winds slapping power lines together. The location of the fire is shown on Figure 4.12-7. The area that was burned is mostly comprised of sagebrush. Because the fire was not related to Colowyo’s mining activities, Colowyo, as the surface landowner will reseed or managed the post-fire area, as it deems appropriate. Tri-State Generation and Transmission Association, Inc. owns and operates a 138kV power line that traversers through the east portion of the permit boundary. The 138kV line runs north to south through the reclaimed East Pit, and just east of the reclaimed Section 16 Pit. To ensure access to all pole locations along the power line for maintenance and emergency repairs, Tri-State will be improving existing ranch roads and/or constructing new roads to access their power line within the permit boundary. Most of this activity will take place south of the reclaimed East Pit and outside of Colowyo’s ground disturbance and reclamation areas. Nonetheless, some of these access locations will traverse across Phase III released areas (Section 16 reclamation areas) and reclaimed