Air Plan Approval; AK: Fine Particulate Matter Infrastructure Requirements

Whenever a new or revised National Ambient Air Quality Standard (NAAQS) is promulgated, the Clean Air Act (CAA) requires states to submit a plan for the implementation, maintenance, and enforcement of the standard, commonly referred to as infrastructure requirements. The Environmental Protection Agency (EPA) is proposing to approve the Alaska State Implementation Plan (SIP) as meeting specific infrastructure requirements for the fine particulate matter (PM2.5) NAAQS.