Miami Sulfur Dioxide Nonattainment Area State Implementation and Maintenance Plan

This document is an attainment demonstration, maintenance plan, and formal request to the United States Environmental Agency to redesignate the Miami, Arizona area, a nonattainnlent area for sulfur dioxide (SO,), to attainment for the health-based 24-hour average and annual average SO, National Ambient Air Quality Standards. It summarizes the progress ofthe area in attaining the SO, standards, demonstrates that all Clean Air Act requirements for attainment have been adopted, and includes a maintenance plan to assure continued attainment after redesignation. This document also demonstrates that the emission reduction control measures responsible for the air quality improvement are both permanent and enforceable.