Air Quality State Implementation Plans; Approvals and Promulgations: Kentucky; Redesignation of the Kentucky Portion of the Louisville 1997 Annual PM2.5 Nonattainment Area to Attainment
Air Quality State Implementation Plans; Approvals and Promulgations: Kentucky; Redesignation of the Kentucky Portion of the Louisville 1997 Annual PM2.5 Nonattainment Area to Attainment
Source: EPA Regulations news 2