The purpose of this IDIQ contract is to provide technical assessment services for the abandoned uranium mines on and around the navajo nation for regions 6 & 9.
Active Indefinite Delivery Contract Awarded Last action
- Contract number
- 68HE0923D0002
- Awardee
-
Tetra Tech, Inc. UEI J8CNBANBZ6U8 Part of Tetra Tech, Inc.
- Awarding agency
-
EPA Region 9
Regional Offices, Environmental Protection Agency
- Task orders
- 30 $76,624,441 obligated
Award facts
- Opportunity
-
- NAUM- Response, Assessment and Evaluation Services Pre-Solicitation · 68HE0921R0006 · Posted Apr 7, 2021
- Combined order value
- $78,754,955 Current and potential, with all options
- Last date to order 71% complete
- IDV ceiling 78% used
- $98,000,000.00
- Award type
- Single award
- Who can order
- Only the awarding agency
- NAICS code
- 541620 Environmental Consulting Services
- Set-aside
- No set-aside
- Competition
- Full and Open Competition · 2 offers Negotiated Proposal / Quote
- Pricing
- Time and Materials
Award details come from SAM.gov/FPDS.
About this IDV
EPA Region 9 awarded an indefinite-delivery contract to Tetra Tech, Inc. on April 7, 2023, with a ceiling of $98 million for technical assessment services for abandoned uranium mines on and around the Navajo Nation in EPA Regions 6 and 9. This is a single-award contract. The contract, formally titled the Navajo Area Uranium Mines Response Assessment and Evaluation Services II (NAUMRAES II), extends through April 9, 2028.
Work is performed across multiple sites on the Navajo Nation and surrounding areas in Arizona, New Mexico, and Utah. The originating solicitation, posted as a Sources Sought notice in April 2021, sought to continue providing assessment and scientific/technical support services at uranium mining-related sites. The contract authorizes removal site evaluations, engineering evaluations and cost analyses, remedial investigation and feasibility studies, technical design services, cleanup verification of temporary removal actions, data and records management, community involvement outreach, and development of program standards and training.
Under this IDIQ, Tetra Tech has received over 30 delivery orders with cumulative awarded value exceeding $70 million. Recent task orders include technical support for ARCO's Remedial Investigation/Feasibility Study oversight in Paguate, New Mexico (awarded August 2025, $539,685); oversight of BNSF Railway Company's background study and engineering evaluations at an unspecified site (July 2025, $359,073); technical support for the Homestake Mining Company RI/FS at Milan, New Mexico (June 2025, $685,955); and removal site evaluation oversight for the Wells Cargo abandoned uranium mines in Cameron, Arizona (April 2025, $96,818). Earlier orders included substantial task orders for Tronox abandoned uranium mines remediation ($10.66 million), the Skyline abandoned uranium mine removal site evaluation in Oljato-Monument Valley ($3.39 million), and the Tronox Cove Transfer Station cleanup verification ($3.69 million). Task orders employ time-and-materials pricing with no set-aside designation.
Task orders
Show all 30
Transactions
| Action | Obligated | Date |
|---|---|---|
| Supplemental Agreement for work within scope | $0 | |
| Other Administrative Action | $0 | |
| Other Administrative Action | $0 | |
| Change Order | $0 | |
| Other Administrative Action | $0 | |
| Supplemental Agreement for work within scope | $0 | |
| Other Administrative Action | $0 | |
| Funding Only Action | -$100,000 | |
| Original award | $100,000 |
Subawards
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Quick answers
Who was awarded contract 68HE0923D0002?
68HE0923D0002 was awarded to Tetra Tech, Inc. by EPA Region 9 (Regional Offices) on April 7, 2023.
How much is contract 68HE0923D0002 worth?
Orders under 68HE0923D0002 have obligated $76,624,441. Their combined current value, with exercised options, is $78,754,955. 68HE0923D0002's own ceiling is $98,000,000.
How many orders have been placed under contract 68HE0923D0002?
30 orders have been placed under 68HE0923D0002, the latest on September 28, 2026.
Who can order from contract 68HE0923D0002?
68HE0923D0002 is a single award indefinite delivery contract. Only the awarding agency can place orders on it.
Was contract 68HE0923D0002 competed?
The extent of competition for 68HE0923D0002 was full and open competition. The government received 2 offers.
On GovTribe
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