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.