Panel Backs Call For Ammonia-Based NAAQS, Boosting Environmentalists

Members of EPA's panel examining the ecological effects of nitrogen oxides (NOx), sulfur oxides (SOx) and particulate matter (PM) are urging the agency to set a national ambient air quality standard (NAAQS) for nitrogen to mitigate rising ammonia emissions, a long-standing but so far unsuccessful goal of environmentalists. On a conference call Aug. 31 to discuss a draft letter and report to EPA on the agency's draft integrated science assessment (ISA), synthesizing scientific studies on the ecological effects of...