Fearing GHG Delays, States Renew Press On EPA To Speed Truck NOx Rule

Update Appended State air regulators are stepping up their push for EPA to accelerate the timeline for adopting rules to slash nitrogen oxide (NOx) emissions from heavy-duty (HD) trucks, raising new fears that the agency’s plan to combine that measure with tighter greenhouse gas limits could delay the NOx standards and undercut states’ air quality goals. “EPA must take immediate action to issue a proposed rule, not only because revised HD NOx standards are long overdue, but...