DEQ Home > School Bus Retrofit Program
Retrofits are aftermarket vehicle additions that help reduce harmful pollutants found in the bus cabin and in tailpipe emissions. The selected technologies are efficient, easy to install, and cost effective. Based on analysis, recommendations, and cost effectiveness, the Utah Division of Air Quality is recommending the use of Diesel Oxidation Catalyst and Close Crank Ventilation systems for this project.
The technologies are expected to reduce particulate matter by 30%, carbon monoxide by 50% and volatile organic compounds (also referred to as hydrocarbons) by 74%1. Based on initial analysis, the cost per bus is $2,025.
Several sources of funding have been secured for the project. These include monies from the Clean School Bus USA Project and the Clean Fuel Vehicles Grant and Loan Program, funds from the Utah Department of Environmental Quality as appropriated by House Bill 146 (2008) and money from the Congestion Mitigation Air Quality (CMAQ) fund.

Funds from the American Recovery and Reinvestment Act have been used in conjunction
with monies from the above sources to complete portions of the retrofit project.
1 – http://www.epa.gov/oms/retrofit/verif-list.htm
Revised: November 3, 2009