Presidential Memorandum
Promoting Domestic Manufacturing and Job CreationPolicies and Procedures Relating to Implementation of Air Quality Standards
This April 12, 2018 memorandum directs the EPA Administrator to streamline implementation of National Ambient Air Quality Standards (NAAQS) and the Regional Haze Program to reduce permitting burdens on domestic manufacturing. It sets specific processing timelines for State Implementation Plans (18 months), preconstruction permits (1 year), and exceptional event demonstrations (120 days), while expanding flexibility for states on offsets, international emissions considerations, and modeling approaches.