United States of America (USA/631: New Highway Vehicles and Engines (HS 8408))
EPA is requesting comment on draft guidance and related interpretations concerning the application of certain emission certification regulations to those on-highway heavy-duty diesel engines that are using selective catalytic reduction systems to meet Federal emission standards. EPA will review the comments and provide final guidance and interpretations in a future Federal Register document.
Final Comment Date: July, 07, 2011
(Texts provided by the World Trade Organization.)