Hino Motors, Ltd. and U.S. subsidiaries reached criminal and civil resolutions valued at over $1.6 billion for a Clean Air Act and smuggling conspiracy involving 110,000+ non-conforming diesel engines (2010–2022). The plea includes a $521.76 million criminal fine, $1.087 billion forfeiture, probation, and a civil penalty of $525 million. Mitigation and recall programmes will offset excess emissions.

U.S. Department of Labor | A Chambersburg soap and detergent manufacturer faces $161,310 in OSHA penalties after a July 2024 nitrogen dioxide gas release sent 12 workers to hospital (two admitted).

AFCO (subsidiary of Zep Inc.) had no emergency response plan, did not evacuate workers, and lacked compliant respiratory protection and hazard communication programmes. OSHA issued one repeat, nine serious, and two other-than-serious violations. The company may contest or comply within 15 business days.

The EPA and DOJ announced a settlement with Manitowoc Company, Inc. and subsidiaries for Clean Air Act violations: importing/selling 1,032 uncertified non-road diesel engines (2014–2018). Manitowoc will pay a $42.6 million penalty and retrofit a diesel locomotive to zero-emission standard in Sparrows Point, MD, with benefits to overburdened communities.

An order requires Ameren Missouri to spend $61 million to mitigate Clean Air Act violations and 14 years of unpermitted SO₂ emissions at its Rush Island power plant. $25 million funds HEPA filters for 125,000 low-income households; $36 million for zero-emission school buses or alternative energy efficiency projects. The original CAA compliance order dates to a 2017 ruling upheld on appeal.