United States Environmental Protection Agency / US EPA MPO Metropolitan Planning Organization MVEB Motor Vehicle Emissions Budget NAAQS National Ambient Air Quality Standards NH3 Ammonia NJ DOT New Jersey Department / Metropolitan Planning Organization for the Greater Philadelphia Region / U.S. Department of Transportation’s Federal Highway Administration / Federal Transit Administration / Delaware Valley Regional Planning Commission / DVRPC Board / United States Department of Transportation / New Jersey Department of Transportation / Pennsylvania Department of Transportation / Environmental Protection Agency / / /