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  1. Home
  2. Navajo Nation: Cleaning Up Abandoned Uranium Mines

Contracting With EPA

This page lists contract opportunities with EPA and resources for abandoned uranium mine (AUM) cleanup work on Navajo Nation. For more information, contact Dennis Tremethick (tremethick.dennis@epa.gov).

On this page:
  • Response Assessment and Evaluation Services Contract II
  • Abandoned Mine Response and Construction Services Contract
  • Response Assessment and Evaluation Services Contract
  • Cove Road Construction Contract
  • Contracting Opportunities
  • Small Business Resources
  • Fact Sheets & Presentations
  • Learn More About Contracting With EPA

Response Assessment and Evaluation Services Contract II

EPA awarded Tetra Tech the second Navajo Area Abandoned Uranium Mines Response, Assessment, and Evaluation Services (RAES) contract, worth $65 million, to address risks to public health and the environment from former mines on Navajo land.

Under this contract, Tetra Tech will focus on providing technical support to EPA through all stages of work addressing abandoned Navajo uranium mines. At sites where EPA assumes cleanup responsibilities directly, the company will investigate mine sites, prepare analyses of possible cleanup plans, assist in designing final plans once they are selected, and provide technical support during and after cleanup actions. At sites where the EPA assumes an oversight role of others conducting investigation and cleanup work, Tetra Tech will support EPA in reviewing site reports, analyses of options, and remedial designs, and conducting field oversight during investigations and cleanup actions. Additionally, the company will work closely with EPA and other experts to guarantee technical consistency across the numerous parties working on Navajo mines to ensure that cleanups are conducted rapidly and effectively. Throughout all this work, the RAES II contract will support EPA’s coordination and outreach with its partners in the Navajo government, local Navajo communities, and many other stakeholders.

  • New Release: EPA Awards Tetra Tech $65 Million Contract to Support Cleanups of Navajo Abandoned Uranium Mines

Abandoned Mine Response and Construction Services Contract

The Abandoned Mine Response and Construction Services (AMRCS) contracts was awarded February 11, 2021, for cleanup efforts at more than 50 abandoned uranium mine sites in and around the Navajo Nation, for up to $220 million over the next five years.

  • News Release: EPA Awards Contracts Worth up to $220 million to Three Companies for Cleanup at Navajo Nation Area Abandoned Uranium Mines

Response Assessment and Evaluation Services Contract

The Response, Assessment and Evaluation Services (RAES) contract was awarded on October 11, 2017, and the scope of work includes site assessment of the abandoned uranium mines.

  • News Release: EPA Awards Tetra Tech Inc. $85 Million Contract to Assess Navajo Abandoned Uranium Mines

Cove Road Construction Contract

EPA Region 9 awarded Navajo-owned Clawson Excavating Inc. a contract worth $918,911 to improve a local access road on the Navajo Nation, paving the way for critical abandoned uranium mine cleanups. Clawson Excavating Inc. will construct improvements to an unmaintained access road in rural Cove, Ariz. Clawson Excavating Inc., a small, Navajo-woman-owned business, will have seven employees working on this contract performing 100% of the work.

  • News Release: U.S. EPA awards Clawson Excavating, Inc. a $918,911 contract for road improvements in Cove, Ariz.

Contracting Opportunities

Hardhat workers standing next what appears to be a mobile drilling rig
  • FedConnect
  • AUM Contract Press Releases
  • Navajo AUM Interested Vendor Registration

Small Business Resources

Tribal and EPA Representative handshake
  • EPA Resources for Small Businesses
  • Procurement Technical Assistance Centers (PTAC)
  • U.S. Small Business Administration
 

Fact Sheets & Presentations

Community Involvement Plan Brochures
  • Companies Working on Navajo Abandoned Uranium Mines (pdf)
  • How to Register for Government Contracting (pdf)
  • AMRCS Industry Day Presentation (pdf)
  • RAES Industry Day Presentation (pdf)
  • Statement of Work (SOW): Navajo Area Uranium Mines Response, Assessment and Evaluation Services (RAES) (pdf)
  • RAES Employment and Training Quarterly Reports

Learn More

Learn More!
  • System for Award Management (SAM)
  • Certified Navajo Businesses (pdf)
  • Navajo AUM (AMRCS) Interested Vendors List (xls) (103.5 KB, March 2019)
  • Navajo AUM (RAES) Interested Vendors List (xls) (57 KB, September 2017)

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
      • 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
  • 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
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Last updated on April 15, 2025
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