Waste Management Inc. has partnered with the American Lung Association and the U.S. Environmental Protection Agency (EPA) to convert seven diesel engine waste haulers to compressed natural gas (CNG).

The waste haulers will reduce 47.3 tons of nitrogen oxides and 2.38 tons of particulate matter, among other emissions.

The Houston-based Waste Management partnered with the American Lung Association of the Upper Midwest and the American Lung Association in Utah, according to a news release from the association.

“Mobile source emissions are the leading cause of outdoor air pollution. This project achieved significant emission reductions, helping the American Lung Association’s mission to fight lung disease and improve lung health,” said Glenn Lanham, executive director, American Lung Association in Utah.