SECAT is the Sacramento Emergency Clean Air & Transportation Grant Program. The SECAT Program is a partnership between the Sacramento Metropolitan Air Quality Management District (SMAQMD) and the Sacramento Area Council of Governments (SACOG). Currently, the Program provides grant funds to replace on-road heavy-duty diesel vehicles that have 2006 and older model year engines with diesel particulate filter (DPF) retrofits or other limited exempt vehicles with cleaner emission vehicles. The goal of the SECAT Program is to reduce the harmful surplus emissions from on-road heavy-duty vehicles operating in the Sacramento Federal Nonattainment Area (SFNA). 

The SFNA is comprised of five Air Districts — the Sacramento Metropolitan Air Quality Management District, Yolo-Solano Air Quality Management District, Placer County Air Pollution Control District, El Dorado County Air Quality Management District, and Feather River Air Quality Management District — and it covers all or parts of these six counties. The SFNA has been classified as “severe” for the federal 8-hour ozone standard with an attainment date of 2018. The SECAT Program is one of many programs in place to help reduce emissions in order to meet the attainment date and make the air healthier to breathe.