An emissions inventory is a detailed list of air pollutant emissions associated with the various sources of emissions. Emissions sources are designated as either stationary or mobile sources. Stationary sources are categorized as either point sources, which emit a confined air stream through a stack or pipe, or area sources, which are numerous small activities that are not individually tracked. Point sources include stationary sources at manufacturing facilities and power plants. Typical area sources are gasoline stations, dry cleaners, wood stoves, forest fires and house paints. Mobile sources are categorized as on-road or off-road. On-road mobile sources include passenger vehicles, motorcycles and trucks; off-road sources include construction equipment, lawn mowers, chainsaws, snowmobiles and motorboats.
Air emissions inventories are crucial to DEEP's efforts to improve Connecticut's air quality in furtherance of public and environmental health. Air emissions inventory information assists in planning to reduce emissions to meet federal and state mandates, tracking Connecticut's progress towards meeting our air quality goals, and mitigating significant impacts of air pollution.
Periodic Emissions Inventory (PEI)
The EPA requires a PEI every three years. The PEI quantifies actual air emissions for all categories of air pollution sources in Connecticut. Below is the Department of Energy and Environmental Protection's submittal for the 2011 PEI. (all documents are available as PDF files)
Point Source Inventory
Greenhouse Gas (GHG) Inventory
The U.S. Environmental Protection Agency (EPA) has a mandatory reporting program for GHG emissions from major point sources. More information about this program can be found here:
EPA Greenhouse Gas Reporting Program
EMIT Emissions Inventory
Title V sources are expected to submit an electronic emissions statement annually. Emission statements must be submitted by March 1st of each year.
EMIT - Connecticut's web -based Emissions Reporting application
Note: Please use the Google Chrome web browser to access the EMIT system. Use of alternate browsers may result in reduced system functionality.
Content Last Updated on January 16, 2019