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Public Hearing and Public Comments: Revision of Tier 4 Criteria Pollutant Standards – Ends July 6

by Rob | May 29, 2026 | Comment and Consultation

https://www.epa.gov/regulations-emissions-vehicles-and-engines/public-hearing-and-public-comments-revision-tier-4 EPA invites public comment on the proposed rule, Revision of Tier 4 Criteria Pollutant Standards, Part 1: Amendments to Phase-In Schedule for Light-Duty...

“Begin Actual Construction” in the Clean Air Act NSR Program – Ends June 26

by Rob | May 29, 2026 | Comment and Consultation

TCOTS Link The U.S. Environmental Protection Agency is initiating consultation with federally recognized Indian Tribes to obtain input on the agency’s proposed rule, “Begin Actual Construction in the New Source Review (NSR) Preconstruction Permitting Program.” In this...

CAA Review of Tier 4 Criteria Pollutant Standards for Motor Vehicles, Part 1 – Ends July 6

by Rob | May 22, 2026 | Comment and Consultation

TCOTS Link The U.S. Environmental Protection Agency (EPA) is offering consultation with federally recognized Indian Tribes to obtain input on the first step (“Part 1”) of the Agency’s proposed two-part action to reconsider the light-and medium-duty Tier 4 criteria...

CWA Section 312(n) Uniform National Discharge Standards Phase II Batch Three Rulemaking – Ends July 14

by Rob | May 16, 2026 | Comment and Consultation

TCOTS Link Webinar: June 2, 2026 Webinar Registration: https://events.gcc.teams.microsoft.com/event/cd4f68b7-b19b-4936-ba96-c3769a98c4f1@88b378b3-6748-4867-acf9-76aacbeca6a7 The U.S. Environmental Protection Agency, in coordination with the Department of War, is...

“Begin Actual Construction” in the Clean Air Act NSR Program – Ends June 26

by Rob | May 16, 2026 | Comment and Consultation

TCOTS Link The U.S. Environmental Protection Agency is initiating consultation with federally recognized Indian Tribes to obtain input on the agency’s proposed rule, “Begin Actual Construction in the New Source Review (NSR) Preconstruction Permitting Program.” In this...
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Recent Posts

  • Public Hearing and Public Comments: Revision of Tier 4 Criteria Pollutant Standards – Ends July 6
  • “Begin Actual Construction” in the Clean Air Act NSR Program – Ends June 26
  • CAA Review of Tier 4 Criteria Pollutant Standards for Motor Vehicles, Part 1 – Ends July 6
  • CWA Section 312(n) Uniform National Discharge Standards Phase II Batch Three Rulemaking – Ends July 14
  • “Begin Actual Construction” in the Clean Air Act NSR Program – Ends June 26

Recent Comments

  • Posted 7/14/21: EPA Response to Transition Letter from RTOC | Region 10 Tribal Operations Committee on Posted 3/26/21: RTOC Letter to EPA on transition

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