Comment submitted by Manufacturers of Emission Controls Association (MECA)

Summary: The Manufacturers of Emission Controls Association (MECA) is requesting an extension of the public comment period for the Tier 4 Criteria Pollutant Standards rulemaking. They argue that the current 49-day window is insufficient due to the technical complexity of the proposal and the upcoming July 4th holiday, and they seek at least 60 days to ensure adequate industry participation.