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  1. Home
  2. Navajo Nation: Cleaning Up Abandoned Uranium Mines
  3. Legal Documents and Settlements
  4. TRUST MINES

Trust Mines: Legal Documents and Settlements

Related Content: Legal Documents and Settlements

Legal documents and settlements related to Navajo Nation Trust Mines including the 2015 Phase 1 Settlement Agreement, the 2023 Phase 2 Settlement Agreement, and the 2022 Phase 2 Expanded Trust Agreement.

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  • Phase 2 Expanded Trust Agreement (pdf) (753.67 KB, February 14, 2022)
    The Phase 2 Expanded Trust Agreement replaced and expanded the Phase 2 Trust Agreement to manage, administer, fund, and perform EE/CAs and removal actions, as needed, at the 16 AUMs for which RSEs were performed under the Phase 1 Trust Agreement, in addition to RSEs at the 30 additional AUMs and two water studies named under the Phase 2 Settlement Agreement.
  • Phase 2 Settlement Agreement (Including Addendum 1, 2, 3 and 4) (pdf) (573.29 KB, April 19, 2023)
    Phase 2 Settlement Agreement to prepare Engineering Evaluations and Cost Analyses and clean up as necessary the 16 abandoned uranium mines (AUMs) identified in the Phase 1 settlement, conduct Removal Site Evaluations at 30 additional AUMs, and conduct two water studies at AUMs.
  • Phase 1 Settlement Agreement (pdf) (1.45 MB, April 9, 2015)
    The United States and the Navajo Nation entered into a settlement agreement on April 8, 2015 called the Phase 1 Settlement Agreement to investigate 16 priority mines.

Navajo Nation: Cleaning Up Abandoned Uranium Mines

  • Abandoned Mines Cleanup
    • CENTRAL REGION
      • Community Involvement Plans
      • CYPRUS AMAX & WESTERN NUCLEAR MINES
      • BLACK MESA MINING DISTRICT
    • EASTERN REGION
      • Community Involvement Plans
      • Fact Sheets
      • AMBROSIA LAKE MINES (TRONOX)
      • CYPRUS AMAX & WESTERN NUCLEAR MINES
      • HAYSTACK #1 MINE
      • MAC AND BLACK JACK MINES
      • MARIANO LAKE MINE (Old Gulf Mine)
      • NORTHEAST CHURCH ROCK MINE
      • OLD CHURCH ROCK MINE
      • QUIVIRA MINES
      • RUBY MINES
      • SECTION 32/33 MINES (TRONOX)
    • NORTH CENTRAL REGION
      • SKYLINE MINE
      • Community Involvement Plan
    • NORTHERN REGION
      • Community Involvement Plans
      • COVE AREA MINES
      • LUKACHUKAI MOUNTAINS MINING DISTRICT
      • CYPRUS AMAX & WESTERN NUCLEAR MINES
    • WESTERN REGION
      • Community Involvement Plans
      • Fact Sheets
      • Maps
      • EL PASO NATURAL GAS MINES
      • ENPRO MINES
      • SECTION 9 LEASE MINES
    • SUPERFUND NPL SITES (Lukachukai)
  • Administrative Records
  • ASPECT Aerial Survey
  • Atlas Screening Assessment Report
  • Community Involvement Plans
  • Contaminated Structures Program
  • Fact Sheets
  • Interactive Map
  • Legal Documents and Settlements
    • TRONOX MINES
      • Fact Sheets
      • Financial Reports
      • Northern Agency RSE Report
    • TRUST MINES
      • Fact Sheet
      • Legal Document and Settlements
      • Technical Reports
  • Site Screen Reports
  • Ten-Year Plan (2020-2029)
    • Related Documents
  • Treatment Technology Pilot Studies
  • Health Effects of Uranium
    • Water Sampling Results
  • Contracting With EPA
    • Navajo Workforce Development
    • RAES Employment and Training Reports
Contact Us About Navajo Nation Abandoned Mines Cleanup
Contact Us About Navajo Nation Abandoned Mines Cleanup to ask a question, provide feedback, or report a problem.
Last updated on March 13, 2026
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