DEEP: Connecticuts Diesel Reduction Initiatives

Connecticut's Diesel Reduction Initiatives

Why Does Diesel Pollution Matter?
Connecticut communities, especially those in urban areas, suffer from sooty exhaust emitted by trucks, buses and other diesel engines that can make breathing difficult - particularly for children, the elderly and other sensitive groups.
Connecticut's Clean Diesel Plan
DEEPís strategy for reducing diesel pollution was set out in the CT Clean Diesel Plan of 2006, authorized by Special Act 05-7, which received an Environmental Merit Award from the U.S. Environmental Protection Agency (EPA) in 2006.  Reducing diesel emissions is a DEEP priority and we continue to move forward with a multi-faceted reduction strategy that includes mobile and stationary source applications for a number of reasons.
  • Diesel exhaust is a significant contributor to air pollution and has been classified as a probable human carcinogen by EPA.
  • Diesel engines emit high levels of nitrogen oxides and particulate matter, as well as a complex mixture of gases many of which are known or suspected cancer causing agents. Diesel exhaust exacerbates asthma and causes inflammation of the airways.
  • Diesel engines are a source of toxic air pollutants.
  • Emissions from diesel powered electricity generators used to meet peak energy demand usually occur on high ozone or ozone action days.
  • Diesel exhaust is an important contributor to airborne concentrations of fine particle pollution, especially in urban areas.
  • Diesel exhaust contains the greenhouse gas, carbon dioxide and black carbon, significant contributors to climate change.
More Clean Diesel Information:
{Freight Train} Freight movement by truck, rail, ship and plane contributes to air pollution in Connecticut, DEEP is developing new plans to reduce emissions from this important economic sector.
{Idling is Fuelish}
Anti-Idling Efforts: CT laws and regulations limit vehicle idling to three minutes.  Anti-idling programs provide a cost effective mechanism to improve air quality and reduce risk exposure from the potential health impacts of vehicle exhaust.
{Clean Diesel Fuels}
Clean Diesel Fuels: Diesel emissions are also being reduced through the use of cleaner fuels.  Standards are set at the national level and information is found on the EPA website for Fuels and Fuel Additives.
{Tug Boat}
Clean Diesel Projects & Programs: Programs that replace older diesel vehicles with clean, new equipment are important in reducing diesel emissions. Diesel retrofit programs have also been successful in reducing air pollution from older diesel vehicles and equipment.
{Diesel Filter}
Clean Diesel Technologies: A number of technologies are available to reduce diesel emissions.  They range from exhaust emission controls to idle-reduction technologies to aerodynamic and fuel-efficient equipment.
{School Buses}
Connecticut Clean School Bus Program: DEEP has reduced childrenís exposure to harmful pollutants by installing or securing funds for the installation of emission controls on over 800 Connecticut school buses under this program.
{DOT Truck}
Diesel Grants and Funding: For diesel emissions reduction projects funded under the Diesel Emissions Reduction Act (DERA).
Diesel and Health: Emissions from diesel exhaust can aggravate existing heart and lung conditions to cause asthma attacks, bronchitis, cardiovascular symptoms, arrhythmias and heart attacks.  EPA Health Assessment Document For Diesel Engine Exhaust (PDF) (May 2002)
{Sooty Truck}
Heavy Duty Diesel Inspection & Maintenance programs in Connecticut consist of roadside monitoring and fleet certification to ensure compliance with the CT DMV Diesel-Powered Commercial Motor Vehicle Emissions Standards.  New standards to reduce opacity cutpoint standards are being evaluated.

Content Last Updated on November 7, 2019