On April 13, 2018, the Environmental Protection Agency (EPA) published a direct final rule approving the updated delegation of EPA authority for implementation and enforcement of certain New Source Performance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAPs) for all sources (both part 70 and non-part 70 sources) to the New Mexico Environmental Department (NMED). EPA stated in the direct final rule that if EPA received relevant adverse comments by May 14, 2018, EPA would publish a timely withdrawal in the Federal Register. EPA received an adverse comment on May 14, 2018, and accordingly is withdrawing the direct final rule.