Revised Cross-State Air Pollution Rule Update
Proposed Rulemaking
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Rule Summary
On October 15, 2020, EPA proposed the Revised Cross-State Air Pollution Rule (CSAPR) Update in order to fully address 21 states' outstanding interstate pollution transport obligations for the 2008 ozone National Ambient Air Quality Standards (NAAQS). Starting in the 2021 ozone season, the proposed rule would require additional emissions reductions of nitrogen oxides (NOX) from power plants in 12 states, improving air quality for millions of Americans.
EPA held a public hearing on November 12, 2020. The public comment period for the proposal closed on December 14.
Cross-State Air Pollution Rule Regions
Rule History
October 15, 2020 - Revised Cross-State Air Pollution Rule Update
EPA proposed to issue new or amended Federal Implementation Plans (FIPs) to revise emission budgets in 12 states to address air quality impacts of the interstate transport of ozone air pollution.
- Proposed Revised Cross-State Air Pollution Update Rule
- Fact Sheet
- Table of State Budgets
- Regulatory Impact Analysis
- Power Sector Modeling
Technical Support Documents (TSDs)
Links to the TSDs have been updated to direct users to beta.regulations.gov. Users may click here to access the docket on the current regulations.gov (except on Tuesdays and Thursdays when regulations.gov will redirect to beta.regulations.gov).
- Air Quality Modeling TSD for the Proposed Revised Cross-State Air Pollution Rule Update
- Allowance Allocation Under the Proposed Revised CSAPR Update Rule TSD
- Assessing Non-EGU Emission Reduction Potential TSD
- Ozone Transport Policy Analysis Proposed Rule TSD
- EGU NOX Mitigation Strategies Proposed Rule TSD
- Preparation of Emissions Inventories for 2016v1 North American Emissions Modeling Platform TSD
- Status of CAA Section 110(a)(2)(D)(i)(I) SIPs for the 2008 Ozone NAAQS for States Covered by the proposed Revised CSAPR Update TSD
Additional supporting information and data for the listed TSDs are available in the official docket.