October 7, 2016

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

May 16, 2016

Revised Interpretation of Clean Water Act Tribal Provision

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

February 24, 2015

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

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

April 21, 2014

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

March 27, 2014

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

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

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

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

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

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

July 1, 2011

Review of New Sources and Modifications in Indian Country

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