Arizona State Implementation Plan: Rillito PM10 Nonattainment Area

The Clean Air Act states that an area designated as nonattainment due to a violation of the NAAQS may be redesignated to attainment if the State submits and EPA approves a plan demonstrating that permanent emission controls that resulted in attainment will remain in place. This plan demonstrates that all CAA requirements for attainment and maintenance have been met and summarizes the progress of the area in attaining the PM10 standard. This document includes a formal request to EPA to redesignate the Rillito, Arizona PM10 nonattainment area to attainment for the health-based 24-hour average PM10 NAAQS.