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

Air

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  • Mobile Source Basics

    Mobile source pollution accounts for a significant portion of all man-made air pollution emitted in Connecticut and throughout the Northeast. Learn the basics about Mobile Sources.

  • CHEAPR - Available Funding

    This page displays the real-time available funding for the CHEAPR program. Funds are distributed on a first come first serve basis.

  • EVConnecticut - How to Report a Broken Charger

    If you drive a plug-in electric vehicle (EV), at some point you may come across a charging station that does not work. Follow these steps to report the broken charger.

  • EVConnecticut - Charging

    Widespread availability of both public and workplace EV charging are reasons why CT is a "range confident" state. Find out about the different types of chargers, workplace charging and installation of EV charging stations!

  • EVConnecticut - EV Charging 101

    If you are thinking about purchasing or leasing a new electric vehicle (EV) or plug-in hybrid electric vehicle (PHEV), you know it must be plugged in at some point. What are the charging options available?

  • VW Settlement - Grants

    View current grant opportunities and common forms required for grantees.

  • VW Settlement - Home

    Connecticut was allocated over $55 million from the VW Settlement for use towards offsetting the excess NOx emissions caused by VW's actions through extensive mitigation projects to reduce NOx from a wide array of mobile sources.

  • VW Settlement - FAQ

    Get quick answers to some commonly asked questions regarding our grant programs and the VW Settlement.

  • VW Settlement - Resources

    View CT's final mitigation plan and documents relating to the development of the plan along with an archive of VW Settlement court documents and links to related VW Settlement web pages.

  • Mobile Sources

    Mobile sources include a variety of vehicles, engines and equipment, and can be classified as either on-road mobile sources (e.g. trucks, buses, passenger cars, motorcycles) or off-road mobile sources (e.g. construction equipment, lawn, garden and snow equipment, personal recreation equipment, locomotives, marine vessels etc.)

  • VW Settlement - Admin Archive

    Access a list of previous VW grant recipients and an archive of other administrative documents, forms and reports that were filed as required by the State Mitigation Trust Agreement.

  • Reasonably Available Control Technology (RACT)

    Reasonably Available Control Technology (RACT) is the lowest emission limitation that a source is capable of meeting considering technological and economic feasibility

  • EVConnecticut - CT's Path to Clean Vehicle Future

    Connecticut's transition to EVs is an essential strategy toward the state’s commitment to creating cleaner, healthier, and more sustainable communities and achieving our state-wide clean air goals.

  • Anti-Idling - Outreach and Education

    Connecticut continues its effort to reduce unnecessary idling and increase awareness of the adverse effects of idling on public health and the environment. Learn more about anti-idling outreach and education.

  • Emission Reduction Credits

    Emission Reduction Credits (ERCs) are uncapped trading systems that sources of air emissions earn by reducing emissions below a specified rate. Learn about Continuous Emission Reduction Credits (CERCs), Discrete Emission Reduction Credits (DERCs), and more.