EPA poised to propose tougher ‘secondary’ NAAQS

The White House Office of Management and Budget (OMB) has completed review of EPA’s draft plan that could propose a tightening of “secondary” welfare-based air limits for nitrogen oxides (NOx), sulfur oxides (SOx) and fine particulate matter (PM2.5), clearing the way for EPA to release the plan by its April target date. OMB completed its interagency review March 15, according to its website. EPA is facing an April 9 consent decree deadline agreed in litigation brought by environmentalists to propose...