The Environmental Protection Agency (EPA) proposes partial approval and partial disapproval of Arizona's plan to meet the air quality standards for PM₁₀ in West Pinal County. This decision includes approving the emissions inventory for 2008 and disapproving several parts of the plan, including the measures for controlling pollution and the plan to reduce emissions over time. The EPA noted that Arizona's current strategies have not been sufficient to meet the required air quality standards and that some of the actions assumed in the plan have already been implemented too early to serve as backup measures if the state fails to meet its goals. Public comments are invited before the final decision is made.
Simple Explanation
The EPA is like a watchdog for clean air, and they found that Arizona's plan to keep the air clean in a town called West Pinal County isn't good enough, so they're saying yes to one small part and no to a lot of other parts of the plan. They want people to share their thoughts before they make a final decision.