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  2. Air Quality Implementation Plans

Approved Air Quality Implementation Plans in Region 1

This site contains information about air quality regulations called State Implementation Plans (SIPs), Federal Implementation Plans (FIPs), and Tribal Implementation Plans (TIPs) approved by EPA Region 1. To find the status of SIP submittals, visit SIP status reports.

State Implementation Plans

Approved regulations, sources specific requirements, and non-regulatory provisions.

EPA-approved regulations and planning documents.

Connecticut

  • EPA Approved Regulations in the Connecticut SIP
  • EPA Approved Connecticut Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Connecticut SIP

Maine

  • EPA Approved Regulations in the Maine SIP
  • EPA Approved Maine Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Maine SIP

Massachusetts

  • EPA Approved Regulations in the Massachusetts SIP
  • EPA Approved Massachusetts Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Massachusetts SIP

New Hampshire

  • EPA Approved Regulations in the New Hampshire SIP
  • EPA Approved New Hampshire Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the New Hampshire SIP

Rhode Island

  • EPA Approved Regulations in the Rhode Island SIP
  • EPA Approved Rhode Island Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Rhode Island SIP

Vermont

  • EPA Approved Regulations in the Vermont SIP
  • EPA Approved Vermont Source-Specific Requirements
  • EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Vermont SIP

Federal Implementation Plans

Region 1 currently has no approved FIPs.

Tribal Implementation Plans

Connecticut

  • Mohegan Tribe of Indians EPA-approved regulations
  • Mashantucket Pequot Tribal Nation EPA-approved Regulations

Maine

  • EPA has not approved any TIPs in Maine

Massachusetts

  • EPA has not issued any TIPs in Massachusetts

New Hampshire

  • EPA has not issued any TIPs in New Hampshire

Rhode Island

  • EPA has not approved any TIPs in Rhode Island

Vermont

  • EPA has not issued any TIPs in Vermont

About this website: The official SIPs, TIPs, and FIPs are contained in regulations promulgated in the Federal Register and codified in the U.S. Code of Federal Regulations (CFR). EPA’s web-versions of the approved SIPs, TIPs, and FIPs are for reference. While we make every effort to maintain the accuracy of the files accessible here, inconsistencies may occur. Please contact us using the link below if you find any errors in these files.

Air Quality Implementation Plans

  • About Air Quality Implementation Plans
  • Approved Air Quality Implementation Plans
  • Develop an Air Quality SIP
  • Find a Regional Contact for Air Quality SIPs/FIPS/TIPs
  • Tools for SIP Status
Contact Us about Air Quality Implementation Plans
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on August 26, 2024
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