EPA Proposed Rule to reduce air pollution from highway heavy-duty vehicles and engines

The Environmental Protection Agency (EPA) proposed a rule that would reduce air pollution from highway heavy-duty vehicles and engines, including ozone, particulate matter, and greenhouse gases. This proposal would change the heavy-duty emission control program—including the standards, test procedures, useful life, warranty, and other requirements—to further reduce the air quality impacts of heavy-duty engines across a range of operating conditions and over a longer period of the operational life of heavy-duty engines.

On April 14, NTAA participated in a public hearing on the first of these proposed regulations. These comments supported a rule requiring that heavy-duty vehicles be “as clean as possible” – EPA’s stated commitment in describing the proposed rule. You can read NTAA Chairwoman, Syndi Smallwood’s comment during the Public Testimony hearing held by the EPA. A comment letter written by NTAA is below as well as a Tribal Template Letter for your Tribe’s convenience. The comment deadline was May 16, 2022.

NTAA created these resources for Tribes on the Proposed Rule: