Proposed Cross-State Air Pollution Update Rule

On this page:

• Rule Summary
• Rule History
• Additional Resources

Rule Summary

On November 16, 2015, the EPA proposed an update to the Cross-State Air Pollution Rule (CSAPR) for the 2008 ozone National Ambient Air Quality Standards (NAAQS) by issuing the proposed CSAPR Update Rule. 

EPA held a public hearing on December 17, 2015 and the public comment period for the proposal ended on February 1, 2016.

Rule History

November 16, 2015 - Proposed Cross-State Air Pollution Update Rule

The EPA proposed Federal Implementation Plans (FIPs) in the CSAPR Update Rule to address air quality impacts of the interstate transport of ozone air pollution in the eastern United States.

• Proposed Cross-State Air Pollution Update Rule
• Proposed CSAPR Update Rule - Regulatory Impact Analysis (pdf) (2.92 MB)
  This Regulatory Impact Analysis (RIA) presents the health and welfare benefits and climate co-benefits of the proposal to update CSAPR, and compares the benefits to the estimated costs of implementing the proposed rule for the 2017 analysis year. This RIA also reports certain estimated impacts of the proposed rule, such as its effect on employment and energy prices.

• Technical support documents
  • Air Quality Modeling Technical Support Document for the 2008 Ozone NAAQS Cross-State Air Pollution Rule Proposal (pdf) (4.38 MB)  (The data files posted below pertain to this proposal and were also released as part of the July 23, 2015 Notice of Data Availability)
    • Updated 8-Hour Ozone Model Performance Statistics by Monitoring Site for the 2011 Base Year CAMx Model Simulation (xlsx) (292.52 KB)
    • Data File with 2017 Ozone Contributions (xlsx) (329.94 KB)
    • Data File with Ozone Design Values (xlsx) (63.96 KB)
  • EGU NOX Mitigation Strategies Proposed Rule TSD (pdf) (295.08 KB)
  • Ozone Transport Policy Analysis TSD (pdf) (1.24 MB)
  • Status of 110(a)(2)(D)(i)(I) SIPs Proposed Rule TSD (pdf) (164.4 KB, November, 2015)
  • Assessment of Non-EGU NOX Emission Controls, Cost of Controls, and Time for Compliance TSD with Appendices (pdf) (4.26 MB)
  • Unit Level Allocations and Underlying Data for the CSAPR for the 2008 Ozone NAAQS (xls) (1.61 MB)

• Power Sector Modeling
• CSAPR Update Rule Fact Sheet (pdf) (500.59 KB)

Previous Actions:

• July 23, 2015 - Notice of Data Availability

• January 2015 - Memo and Information Sharing

Additional Resources

• Cross-State Air Pollution