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Cross-State Air Pollution Rule (CSAPR)

About the Rule

  • Good Neighbor Plan for 2015 Ozone NAAQS
  • Revised CSAPR Update (2020- Present)
  • CSAPR Update (2017 – Present) - Regulatory Actions
  • CSAPR (2015 – Present) - Regulatory Actions and Litigation

Basic Information

  • Overview of CSAPR
  • State Budgets, Variability Limits, and Assurance Provisions
  • States Affected by CSAPR
  • Compliance and Results

Implementation Tools

  • Resources for Implementation
  • Allowance Allocations
  • Fact Sheets
  • New Unit Set-aside Notices of Data Availability (NUSA NODA)

Additional Resources

  • Clean Air Markets
  • Air Transport
  • Air Market Program Data (AMPD)
  • Clean Air Markets - Business Center

Environmental Issue Addressed by CSAPR

  • Interstate Air Pollution Transport
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 11, 2022
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