States Urge EPA To Speed NOx Rules For Large Vessels As Truck Push Fails

State officials are urging EPA to speed plans for new regulations to cut releases of nitrogen oxide (NOx) emissions from ocean-going vessels, locomotives and aircraft, even as the agency rejects their call to accelerate new rules to slash emissions of the ozone-forming pollutant from heavy-duty (HD) trucks. In addition to the truck sector, “There are also several other important ‘federal source’ categories within the heavy-duty mobile source sector for which EPA needs to develop pathways to reduce emissions, namely ships,...