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State Implementation Plan (SIP)

This page is updated with information about air quality regulations called State Implementation Plans (SIPs). A SIP is a collection of regulations and documents used by our state to reduce air pollution in areas that do not meet National Ambient Air Quality Standards, or NAAQS.

When a notice of public comment period is open for a specific SIP, information will be listed below:

Public Notice: re. Proposed State Implementation Plan Revision to the RI Infrastructure Certification for the 2012 National Ambient Air Quality Standard for Fine Particulate Matter (PM2.5)

For EPA-approved regulations and air quality plan summaries visit:
https://www.epa.gov/air-quality-implementation-plans/approved-air-quality-implementation-plans-region-1