February 27, 2017

Postponement of Effectiveness of the Consolidated Federal Oil & Gas and Federal & Indian Coal Valuation Reform 2017 Valuation Rule

September 26, 2016

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

May 23, 2014

Notice of Correction on the Draft Environmental Impact Statement for the Four Corners Power Plant and Navajo Mine Energy Project

May 16, 2014

Notice of Intent To Prepare an Environmental Impact Statement and Notice of Public Scoping Meetings for the Navajo Generating Station-Kayenta Mine Complex Project, Arizona

May 16, 2014

Notice To Extend the Public Comment Period on the Draft Environmental Impact Statement for the Four Corners Power Plant and Navajo Mine Energy Project

March 28, 2014

Notice of Availability of the Four Corners Power Plant and Navajo Mine Energy Project Draft Environmental Impact Statement

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

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

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

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