ACCMA Signs Onto Two Clean Air Letters September 4, 2024 Advocacy, Legislation ACCMA has co-signed two letters related to clean air at the request of the American Lung Association. The first letter urges the U.S. Environmental Protection Agency (EPA) to authorize a series of waivers that will enable California to implement clean air programs that are projected to deliver over $116 billion in health benefits and save over 11,600 lives over the course of the programs in California alone. The second letter calls on the EPA to authorize California’s proposed standards that will transition large truck fleets, which are a major source of harmful air pollutants along with toxic diesel particulate matter, to zero-emission vehicles.