The Environmental Protection Agency said $1 million in grant funding is available for tribal applicants to establish clean diesel projects, and is taking proposals through Aug. 23.
The agency said it anticipates awarding up to five tribal assistance agreements, and that grant-funded projects may include replacing, upgrading or retrofitting school buses, transit buses, heavy-duty diesel trucks, marine engines, locomotives, energy production generators or other diesel engines.
This competition is part of the EPA's broader Diesel Emission Reduction Act program, which funds projects to clean up the nation's legacy fleet of older diesel engines that emit pollutants such as nitrogen oxides and particulate matter. Those pollutants are linked to a range of serious health problems including asthma, lung and heart disease, other respiratory ailments and premature death, the EPA said.
The agency said this is the program's third tribes-only competition for clean diesel funding.
In 2014 it awarded more than $925,000 to three tribes in Washington state to replace older marine engines with newer, more efficient ones, the EPA said. In 2015 it awarded $1.5 million to six tribes in three regions for engine repowers and replacement, and for truck stop electrification to reduce truck idling.
The tribal program gives priority to projects that achieve significant reductions in diesel emissions and exposure in areas designated as having poor air quality, and areas that receive a disproportionate amount of air pollution from diesel fleets