2020-06-25_REVISION - C1981019 (6)

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RULE 2 PERMITS be used where appropriate to aid in control of erosion both prior to seeding and if necessary, after an area has been seeded. 2.05.4 (2) (e) Reclamation Revegetation Revegetation techniques described in Volume 1, Section 2.05.4 will be employed at the South Taylor mining area. 2.05.4(f-h) Disposal,Mine Openings,Water and Air Control These topics are discussed in Volume 1, Section 2.05.6. There will be no substantive changes to the approaches already employed for these topics. 2.05.5 Post-Mining Land Uses The reclamation plan described in Section 2.05.4 will be implemented to restore the disturbed areas associated with the South Taylor mining areas to the pre-mining use of rangeland. The land use of rangeland for these areas is identical to the pre-mining use. Specifically, Colowyo will reclaim the mined areas to a rangeland condition capable of supporting both domestic livestock and wildlife. Other information relevant to this section can be found in Volume 1, Section 2.05.5. 2.05.6 Mitigation of Impacts of Mining Operations 2.05.6 (1) Air Pollution Control Plan Air quality will be protected in accordance with the procedures outlined in Volume 1 and Exhibit 15 in Volume 513. 2.05.6(2) Fish and Wildlife Plan Procedures specified in the Volume 1, Section 2.05.6 will be followed by Colowyo to ensure minimal impacts to fish and wildlife in the South Taylor mining areas. At the conclusion of the mining activities, disturbed lands will be restored in accordance with the reclamation plan. 2.05.6 (3)(a) Protection of the Hydrologic Balance Surface Water Surface water will be protected in the mining areas as described in Section 2.05.3(4) . Protection includes the use of diversion ditches to route surface water around the mining impact areas and sediment ponds downstream of the mining impact areas. Current surface water rights will not be impacted by mining operations at Lower Wilson or South Taylor. There is no expected long-term measurable impact to the quantity of surface water in Wilson, Taylor, or Good Spring creeks or any of their tributaries. Surface water amounts that will be used in mining operations will be within the water rights owned by Colowyo. Surface water quality of the three creeks is calculated to only be marginally impacted by mining activities. This marginal impact, described in the Probable Hydrologic Consequences section (Section 2.05.6 (3)(b)(111)), will be due to meteoric water being captured in and evaporated from the mine pit during operations, and meteoric water contacting an increased surface area of soil in the vadose zone and South Taylor/Lower Wilson—Rule 2,Page 76 Revision Date: 6/22/20 Revision No.: MR-220