National Mining Association filed 1 comment on this docket between Sep 19, 2025 and Sep 19, 2025. 4 other organizations filed here. The comment window closed 316d ago.
The National Mining Association submits these comments on the U.S. Environmental Protection Agency's proposed rule entitled "Air Plan Partial Approval and Partial Disapproval; Colorado; Regional Haze Plan for the Second Implementation Period." 90 Fed. Reg. 31,926 (July 16, 2025); Docket ID No. EPA–R08–OAR–2024–0607.
The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) submission submitted by the State of Colorado on May 20, 2022, and supplemented on August 2, 2022, and June 23, 2023 (Colorado’s 2022 SIP submission) under the Clean Air Act (CAA) and the EPA’s Regional Haze Rule (RHR) for the program’s second implementation period. Colorado’s 2022 SIP submission addresses the requirement that states revise their long-term strategies every implementation period to make reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. Colorado’s 2022 SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. Concurrently, the EPA is proposing to approve a revision to Colorado’s SIP, which incorporates moving the regional haze provisions in Regulation Number 3 to the newly adopted Regulation Number 23. The EPA is taking this action pursuant to the CAA.
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