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Tribal Actions and Events Calendar

This calendar includes the following information:

Upcoming outreach activities (e.g., rulemaking webinars, trainings)
National Tribal Council (NTC) monthly meetings,
National Tribal Air Association (NTAA) meetings,
Upcoming regulatory dates (e.g., expected rule proposal dates).
Previous Trainings and Webinars

For inquires or to add an entry to the calendar, please contact: Shojgreen.Ricardo@epa.gov or Kaufman.Amanda@epa.gov

Open Comment Periods and Other Actions

Upcoming Event

Open Comment Periods and Other Actions
Type of Action	Action/ Rulemaking	Due Date
Proposed rule	Reconsideration of Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review	3/3/2025
Proposed rule; correction	Reconsideration of Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review; Correction	3/3/2025
Proposed rule	Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines	3/13/2025
Notice of availability and public comment period	Notice of Availability of One New Chapter in the Environmental Protection Agency’s Air Pollution Control Cost Manual—Dry Sorbent Injection	3/17/2025
Proposed rule	National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review	3/24/2025
Proposed rule; extension of public comment period	National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review; Comment Period Extension	4/14/2025
Proposed rule; reopening of public comment period	Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines; Reopening of Comment Period	4/15/2025
Proposed rule; request for comment; reopening of comment period	Standards of Performance for New Stationary Sources and Emission Guidelines for Existing Sources: Large Municipal Waste Combustors Voluntary Remand Response and 5- Year Review; Reopening of Comment Period	7/16/2025

March 2025

Mon	Tue	Wed	Thu	Fri
3 Proposed rule Reconsideration of Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review Comments Due Today Proposed rule; correction Reconsideration of Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review; Correction Comments Due Today	4	5	6	7
10	11	12	13 Proposed rule Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines Comments Due Today	14
17 Notice of availability and public comment period Notice of Availability of One New Chapter in the Environmental Protection Agency’s Air Pollution Control Cost Manual—Dry Sorbent Injection Comments Due Today	18	19	20	21
24 Proposed rule National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review Comments Due Today	25	26	27	28
31

April 2025

Mon	Tue	Wed	Thu	Fri
	1	2	3	4
7	8	9	10	11
14 Proposed rule; extension of public comment period National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review; Comment Period Extension Comments Due Today	15 Proposed rule; reopening of public comment period Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines; Reopening of Comment Period Comments Due Today	16	17	18
21	22	23	24	25
28	29	30

Previous Trainings and Other Resources
Consultation with Tribes