Trendpublic
Sort by: Title Date

Filter Items

Select Date Range

  
Proposed Rule 11 Sep 2025 incorporation by reference, reporting and recordkeeping requirements, environmental regulations, intergovernmental relations, environmental protection, montana, air pollution control, volatile organic compounds, air quality, ozone, nitrogen dioxide, emissions, carbon monoxide, state implementation plans, particulate matter, epa, visibility, greenhouse gases, sulfur oxides, lead

🌁Montana's Regional Haze Plan

The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) submission submitted by the State of Montana on August 10, 2022, under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation period. Montana'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. Montana's 2022 SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. The EPA is also proposing to approve the prong 4 visibility portion of Montana's October 1, 2018 Infrastructure SIP submission for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The EPA is taking these actions pursuant to the CAA.

Learn More
Proposed Rule 24 Mar 2025 compliance, environmental regulation, environmental protection, epa, reporting and recordkeeping requirements, incorporation by reference, intergovernmental relations, ozone, air pollution control, volatile organic compounds, air quality, particulate matter, sulfur oxides, idaho, regional haze, visibility

🌫️Idaho's Regional Haze Plan

The Environmental Protection Agency (EPA) is proposing to approve the Idaho regional haze State Implementation Plan (SIP) revision submitted on August 5, 2022, and supplemented on May 8, 2024. Idaho submitted the SIP revision to address the requirement to make reasonable progress toward the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility in certain national parks and wilderness areas.

Learn More