March 6, 2017

Intention To Review and Rescind or Revise the Clean Water Rule

October 7, 2016

Draft General Permit Under the Federal Indian Country Minor New Source Review Program

September 29, 2016

Federal Baseline Water Quality Standards for Indian Reservations

September 26, 2016

Treatment of Indian Tribes in a Similar Manner as States for Purposes of Section 303(d) of the Clean Water Act

Notice of Approval of Clean Air Act Permit for Navajo Generating Station

June 21, 2016

Reissuance of NPDES General Permit for Discharges From Federal Aquaculture Facilities and Aquaculture Facilities Located in Indian Country Within the Boundaries of Washington State (Permit Number WAG130000)

June 3, 2016

Federal Implementation Plan for True Minor Sources in Indian Country in the Oil and Natural Gas Production and Natural Gas Processing Segments of the Oil and Natural Gas Sector; Amendments to the Federal Minor New Source Review Program in Indian Country T

May 16, 2016

Revised Interpretation of Clean Water Act Tribal Provision

April 7, 2016

National Priorities List

March 14, 2016

Information Collection Request Submitted to OMB for Review and Approval; Comment Request; Federal Implementation Plan for Oil and Natural Gas Well Production Facilities; Fort Berthold Indian Reservation (Mandan, Hidatsa, and Arikara Nation)

January 19, 2016

Treatment of Indian Tribes in a Similar Manner as States for Purposes of Section 303(d) of the Clean Water Act

October 27, 2015

Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) or Superfund, Section 128(a); Notice of Grant Funding Guidance for State and Tribal Response Programs for FY2016

August 7, 2015

Revised Interpretation of Clean Water Act Tribal Provision

June 30, 2015

Proposed Issuance of NPDES General Permits for Wastewater Lagoon Systems Located in Indian Country in EPA Region 8

April 21, 2015

National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma

April 3, 2015

Approval of Tribal Implementation Plan and Designation of Air Quality Planning Area; Pechanga Band of Luiseño Mission Indians

March 30, 2015

Approval and Promulgation of Federal Implementation Plan for Oil and Natural Gas Well Production Facilities; Fort Berthold Indian Reservation (Mandan, Hidatsa and Arikara Nation), North Dakota; Correction

February 24, 2015

National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma

January 29, 2015

Notice of Status Update on the Proposed Determination for the Pebble Deposit Area, Southwest Alaska

January 9, 2015

Notice of Renewal of Federal Operating Permit for Grand Casino Mille Lacs

January 6, 2015

Approval of Tribal Implementation Plan and Designation of Air Quality Planning Area; Pechanga Band of Luiseño Mission Indians

December 3, 2014

Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) or Superfund, Section 128(a); Notice of Grant Funding Guidance for State and Tribal Response Programs for FY2015

September 19, 2014

Announcement To Extend the Period To Evaluate Public Comments Received on the Proposed Determination for the Pebble Deposit Area, Southwest Alaska

August 28, 2014

Agency Information Collection Activities; Submission to OMB for Review and Approval; Comment Request; Clean Air Act Tribal Authority (Renewal)

July 21, 2014

Proposed Determination to Restrict the Use of an Area as a Disposal Site; Pebble Deposit Area, Southwest Alaska

June 24, 2014

Notice of Issuance of Minor New Source Review Construction Permit to Shooting Star Casino and Event Center

June 5, 2014

Managing Emissions From Oil and Natural Gas Production in Indian Country

May 30, 2014

Review of New Sources and Modifications in Indian Country-Amendments to the Federal Indian Country Minor New Source Review Rule

May 2, 2014

Approval and Promulgation of Implementation Plans; Swinomish Indian Tribal Community; Tribal Implementation Plan

April 25, 2014

Notice of Issuance of Minor Permit Modification to a Federal Operating Permit to NRG Reliability Solutions, LLC

April 21, 2014

Amendments to Delegation of Authority Provisions in the Prevention of Significant Deterioration Program

April 14, 2014

Applications for New Awards; Title III, Part A, Alaska Native and Native Hawaiian-Serving Institutions (ANNH) Program

March 27, 2014

Proposed Information Collection Request; Comment Request; Reporting and Recordkeeping Requirements for Clean Air Act Tribal Authority (Renewal)

February 25, 2014

General Permits and Permits by Rule for the Federal Minor New Source Review Program in Indian Country

January 14, 2014

General Permits and Permits by Rule for the Federal Minor New Source Review Program in Indian Country

December 19, 2013

Approval of Application Submitted by Eastern Shoshone Tribe and Northern Arapaho Tribe for Treatment in a Similar Manner as a State Under the Clean Air Act

October 22, 2013

Approval of Air Quality Implementation Plans; Navajo Nation; Regional Haze Requirements for Navajo Generating Station; Supplemental Proposal

October 2, 2013

Source Specific Federal Implementation Plan for Implementing Best Available Retrofit Technology for Four Corners Power Plant; Navajo Nation; Extension of Notification Deadline

September 25, 2013

Approval of Air Quality Implementation Plans; Navajo Nation; Regional Haze Requirements for Navajo Generating Station; Extension of Public Comment Period

July 11, 2013

Source Specific Federal Implementation Plan for Implementing Best Available Retrofit Technology for Four Corners Power Plant; Navajo Nation; Extension of Notification Deadline

July 9, 2013

Approval of Air Quality Implementation Plans; Navajo Nation; Regional Haze Requirements for Navajo Generating Station; Extension of Public Comment Period

July 8, 2013

Delegation of Authority to the Southern Ute Indian Tribe To Implement and Enforce National Emissions Standards for Hazardous Air Pollutants and New Source Performance Standards

Delegation of Authority to the Southern Ute Indian Tribe To Implement and Enforce National Emissions Standards for Hazardous Air Pollutants and New Source Performance Standards

June 19, 2013

Approval of Air Quality Implementation Plans; Navajo Nation; Regional Haze Requirements for Navajo Generating Station; Notice of Intent To Hold Public Hearings

June 4, 2013

Review of New Sources and Modifications in Indian Country

March 22, 2013

Approval and Promulgation of Federal Implementation Plan for Oil and Natural Gas Well Production Facilities; Fort Berthold Indian Reservation (Mandan, Hidatsa, and Arikara Nation), North Dakota

March 19, 2013

Approval of Air Quality Implementation Plans; Navajo Nation; Regional Haze Requirements for Navajo Generating Station; Extension of Comment Period

February 5, 2013

Approval of Air Quality Implementation Plans; Navajo Nation; Regional Haze Requirements for Navajo Generating Station

January 10, 2013

Review of New Sources and Modifications in Indian Country: Notice of Action Partially Granting Petition for Reconsideration and Denying Request for Administrative Stay

August 15, 2012

Approval and Promulgation of Federal Implementation Plan for Oil and Natural Gas Well Production Facilities; Fort Berthold Indian Reservation (Mandan, Hidatsa, and Arikara Nations), North Dakota

Approval and Promulgation of Federal Implementation Plan for Oil and Natural Gas Well Production Facilities; Fort Berthold Indian Reservation (Mandan, Hidatsa, and Arikara Nations), ND

July 1, 2011

Review of New Sources and Modifications in Indian Country