Connecticut Department of Energy & Environmental Protection

Proposed State Implementation Plan (SIP) Revisions

The public notices in this section are provided as a convenience to the public. The official legal notice has been published in accordance with the requirements of all applicable laws.

When available, supporting documents (draft permits, etc.) are formatted as Adobe PDF files and can be read online or downloaded for printing.

If there are no public notices currently available in a proposed action category (SIP Revisions, General Permits, Individual Permits, Miscellaneous, Adjacent States) that category will not display.

Note: Notices of Proposed Regulations can be viewed on the Connecticut eRegulations website.

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  • Notice of Intent of Two Revisions to the State Implementation Plan: Periodic Emissions Inventory Year 2014 and 2017

    The Department of Energy and Environmental Protection (DEEP) hereby gives notice of intent of two revisions to the SIP to satisfy the requirements of sections 172(c)(3) and 182(a)(3)(A) of the federal Clean Air Act (CAA). Each revision to the SIP is a Periodic Emissions Inventory (PEI), one for year 2014 and one for year 2017, to satisfy inventory requirements for the 2008 and 2015 National Ambient Air Quality Standards (NAAQS) for ozone. The State of Connecticut is classified as nonattainment for the 2008 and 2015 ozone NAAQS and must therefore submit a periodic inventory of ozone precursors every three years. These two Periodic Emissions Inventories will be submitted to the U.S. Environmental Protection Agency (EPA) for review and approval as revisions to the SIP. Written comments are due no later than 4pm on January 26, 2024. A public hearing was not requested by January 4, 2024, therefore the public hearing originally scheduled for January 23, 2024 has been cancelled.

    Date Posted: 12/19/2023

  • Notice of Intent to Revise the State Implementation Plan for Air Quality: 2015 Ozone National Ambient Air Quality Standards

    Notice of intent to revise the State Implementation Plan to comply with the 2015 National Ambient Air Quality Standards for Ozone. This plan revision is necessary to fulfill the requirements under sections 172 and 182(b) of the Clean Air Act (CAA) for moderate nonattainment areas. Written comments are due no later than 4:00 PM on January 23, 2024. A public hearing was not requested by January 10, 2024, therefore the public hearing originally scheduled for January 23, 2024 has been cancelled.

    Date Posted: 12/6/2023