Title V Permitting

Air Emissions

CT Air Quality Forecasts

Depot Campus

Other Air Compliance Resources

Installing New Generators or Other Fuel-Burning Equipment

We must carefully consider how any new sources or any changes to our existing sources will affect our permit compliance at any of the UConn campuses.

For further information, please contact the OEP at (860) 486-8148 or email

TITLE V Permitting


The UConn Storrs campus is a Title V air-permitted source.This means UConn has a campus-wide permit from the CT DEEP that specifically names every applicable source of air pollutants.

Nearly all of our sources involve fuel-burning equipment, from large industrial boilers to residential-type hot water heaters.

We must carefully consider how any new sources or any changes to our existing sources will affect our permit compliance.

Please contact the OEP at (860) 486-8148 or e-mail for further information.


Air Pollutant Emissions

UConn tracks the amount of pollutants emitted into the air at the Storrs campus.This is done largely by tracking the amount of daily fuel usage or the amount of time that our equipment is running.

The amounts of pollutants emitted are then calculated. The emissions are reported to DEEP once per year in March.

An example of the calculated campus-wide totals looks like this:


…more on Air Pollutant Sources and Emissions at UConn

All fuel burning equipment and other applicable emission units are accounted for in the Storrs’ Title V permit. Examples of emission sources at UConn Storrs include emergency generators, boilers, parts washers, heaters and combustion turbines.

Daily operating hours or daily fuel consumption is recorded, depending on the type of equipment. Monthly, the recorded information is consolidated and  pollutant emissions are calculated to provide a 12-month rolling total estimated summary of emissions from the campus.

The pollutants covered by our Title V permit covers Nitrogen Oxides (NOX), Volatile Organic Compounds (VOCs), Sulfur Dioxides (SOX), and particulate matter (PM), and other Hazardous Air Pollutants (HAPs). The campus is a “major source” for each pollutant except the HAPs.

Major fuel burning equipment includes five boilers, two chiller engines, and two emergency engines at the Central Heating Plant. UConn’s cogeneration facility has three combustion turbines each with a corresponding duct burner. Another emergency diesel engine located at the Central Heating Plant provides black-start emergency power to the cogeneration facility. The separate South Campus chiller plant includes one natural gas fired chiller engine and one diesel fired emergency engine.

There are also includes several other emergency engines throughout campus that either have individual permits or operate under the general conditions of the CT air regulations.

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CT Air Quality Forecasts

This is the DEEP’s Connecticut’s Air Quality forecast webpage. The forecast for ozone must be checked before UConn can run routine tests of emergency generators.

Fuel burning equipment like generators emit nitrogen oxides. Nitrogen oxides leads to the formation of ground level ozone, the primary cause of smog. When weather conditions like high temperatures

and sustained sunlight cause a buildup of ground level ozone, the use of emergency generators is restricted to prevent air quality from getting worse.


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Depot Campus

UConn’s Depot Campus, located on Route 44 in Mansfield Depot, also has regulated sources of air pollutants.

These include emergency generators, various small boilers, furnaces, and water heaters, and several rooftop HVAC units.

The Depot Campus has an approved registration for coverage (No. 098-0059-GPLPE) under CTDEP General Permit to Limit Potential to Emit (GPLPE).

Depot Campus
air generator

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Other Air Compliance Resources

For more information on the State of Connecticut’s Department of Environmental Protection guidance on air permitting.

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