Emissions flap has already cost the German automaker $20 billion in fines and civil settlements in the US.
Failed as an employer to acquaint the worker with the hazards related to trapped hydrogen.
Has been powering operations and maintenance facilities at the Toronto airport for 10 years.
Has agreed to pay $102 million federal fines and may face civil actions.
NHTSA penalty follows a $105 million fine for mishandling recalls
Fine the largest ever for a polluter in Zhejiang province, one of the most prosperous, but also most polluted provinces in China.
Officials say the releases, between 2006 and 2009, emitted hydrogen cyanide, sulfur dioxide, nitrogen oxides and mercury.
Automaker will agree to government oversight on safety issues.
Automaker in trouble again for failing to quickly report vehicle problems and delaying a product recall.
Hungarian officials say fine justified by unprecedented amount of hazardous materials released during incident