OMB starts review of NOx-SOx-PM air standards plan

EPA has sent its proposal likely tightening “secondary” federal air quality standards for nitrogen oxides (NOx), sulfur oxides (SOx) and particulate matter (PM) for White House Office of Management and Budget (OMB) pre-publication review, as the agency races to meet deadlines for proposed and final rules this year. OMB received the proposal Feb. 5, according to its website, triggering a review process that typically takes up to 90 days, but can be faster or slower, depending on the circumstances. EPA...