Below is the delegation agreement, and other supporting information, between EPA and the Navajo Nation for the implementation of the title V operating permit program under 40 CFR part 71. The initial delegation agreement became effective on October 15, 2004. See 69 FR 222. In addition, a supplemental agreement became effective March 26, 2006. See 71 FR 16773.

• Navajo Nation EPA Part 71 delegation agreement (PDF)(16 pp, 68 K)
• Supplemental Eligibility Determination for the Navajo Nation (PDF)(8 pp, 456 K)
• Navajo Nation EPA Supplemental Part 71 delegation agreement (PDF)(9 pp, 4 MB, March, 2006)
  This agreement allows the Navajo Nation Environmental Protection Agency to administer the federal Part 71 operating permits program on behalf of EPA.
• Voluntary Compliance Agreement, Air Quality (PDF)(30 pp, 16 MB, May 2005)
  Agreement entered into by the Salt River Project Agricultural Improvement and Power District ("SRP"), as operating agent for the Navajo Generating Station ("NGS") and with the express written consent of each Participant of NGS.
• Navajo Nation Part 71 program description and transition plan (PDF)(16 pp, 134 K, 7-16-2004)
  NNEPA Part 71 program descrition and trasition plan between EPA and the Navajo Nation for the implementation of the federal Operating Permit Program.
• Navajo Nation Treatment as State (PDF)(7 pp, 110 K, March, 2006)
  Supplemental Eligibility Determination for the Navajo Nation for Treatment in the Same Manner As A State for Purposes of Delegation of Administration of the Clean Air Act Title V, 40 CFR Part 71 Program
• Voluntary Compliance Agreement (PDF)(30 pp, 16 MB, May 18, 2005)
  May 2005 compliance agreement between Navajo Nation EPA, SRP, and APS regarding the Four Corners Power Plant and Navajo Generating Station.