Connecticut Department of Energy & Environmental Protection

DEEP headquarters at 79 Elm Street in Hartford has partially re-opened to staff and members of the public as of Tuesday, February 3. The DEEP records room has re-opened. The DEEP Central Permit Processing Unit (CPPU) will be open to the public starting on Wednesday, Feb. 4. For updates, click here

Public Notices

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  • Big Six Towers, Inc, Woodside NY 

    Notice of complete application for a minor modification to a Title V facility at Big Six Towers, Inc. in Woodside NY.

  • Notice of Intent to Revise the State Implementation Plan for Air Quality: Attainment Demonstration for the 2008 Ozone NAAQS Contingency Measures and Motor Vehicle Emissions Budgets

    (Originally posted on 12/31/2025) Notice of Intent to Revise the SIP for Air Quality: Attainment Demonstration for the 2008 Ozone NAAQS Contingency Measures and Motor Vehicle Emissions Budgets. A public online hearing, only upon request, will be held at 2:00 PM on February 24, 2026. Such a request must be made by 4:00 PM on February 18, 2026. If no request for a hearing is received on or before February 18, 2026, the hearing will be cancelled. Written comments are due by February 24, 2026.

  • Woodlake Tax District, Woodbury

    Notice of tentative determination to approve an application for a permit renewal submitted by Woodlake Tax Districts to discharge a maximum of ninety thousand (90,000) gallons per day of treated domestic sewage from condominiums to the groundwaters in the Hessekey Brook Watershed in Woodbury Connecticut. Written comments due by April 5, 2025.

  • The New York and Presbyterian Hospital

    Notice of tentative determination to approve an application submitted by The New York and Presbyterial Hospital for a renewal Title V permit. Written comments are due by February 20, 2026.

  • Connecticut Department of Transportation, Greenwich

    Notice of public hearing for an application submitted by Connecticut Department of Transportation, U.S. Route 1 over Greenwich Creek in Greenwich, CT. This virtual public hearing will be held on October 30 5, 2025 at 5:30 PM via Zoom. Written comments are due by November 6, 2025.

  • MASSPOWER, LLC, Indian Orchard, MA

    Public notice for an application submitted by MassPower LLC for a renewal to a Title V permit. Written comments are due by February 17, 2026.

  • Town of East Lyme DS-202503640

    Notice of tentative determination to approve an application submitted by the Town of East Lyme for a Dam Safety permit. Written comments due on February 19, 2026.

  • Honeyspot Recycling LLC, Enfield

    Notice of tentative determination to approve an application submitted by Honeyspot Recycling, LLC for renewal of modified permit to construct and operate a Reduction Plant . Written comments due February 15, 2026.

  • Connecticut Department of Administrative Services, Hartford

    Notice of tentative determination to approve an application submitted by the Department of Administrative Services to construct and operate an intermediate processing facility. Written comments due February 8, 2026.

  • National Grid Generation LLC - Holtsville GT & Ling Facility, Holtsville NY

    Notice of tentative determination to approve an application to renew the Air Title V permit for National Grid Generation LLC, Holtsville GT & Ling facility in NY. Written comments are due by February 27, 2026.

  • CM 5775, Guilford

    Notice of tentative determination to approve an application for a permit renewal submitted by CM 5775 to discharge a maximum of 9,000 gallons per day of domestic sewage wastewaters to the groundwaters in the West River and South-Central Shoreline watershed from operations at The Guilford House. Written comments due by October 21, 2025.

  • Brian Gardner, Old Saybrook 

    Notice of tentative determination to approve an application submitted by Brian Gardner for proposed activity that includes retaining an existing fixed pier 3.7’ wide by 74’ long for personal use, with a modification of replacing the existing wooden decking with flow-through decking and removing the existing kayak rack. This activity will affect coastal resources and tidal wetlands. Written comments due by October 27, 2025.

  • Connecticut Department of Transportation, Mansfield

    Notice of tentative determination to approve an application submitted by the Connecticut Department of Transportation for proposed activity that includes rehabilitation of Bridge No. 06648 carrying Route 6 Eastbound over an unnamed brook. This activity will impact 2,625 sf of watercourse permanently; 625 sf of watercourse temporarily; 1,325 sf of wetland permanently; and 1,170 sf of wetlands temporarily. Written comments due by February 23, 2025.

  • Town of Stonington

    Notice of tentative determination to approve an application submitted by the Town of Stonington for proposed activity that includes installation of a new boat ramp, public dock, crew dock, and living shoreline. This activity will affect coastal resources and tidal wetlands. Written comments due by April 14, 2025.

  • Connecticut Department of Transportation, Derby and Shelton

    Notice of tentative determination to approve an application submitted by Connecticut Department of Transportation for proposed activity that includes installation of scour countermeasures around Piers 9 and 10 in the Housatonic River occupying 31,120 sf with 3,470 sf of temporary impacts associated with construction access to protect and maintain the bridge. This activity will affect aquatic resources. Written comments due by March 20, 2025.

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