Delivery Order 68HE0923D0002-68HE0923F0061
- Not listed
- This federal contract award, valued at $98,642.25, was issued by the Environmental Protection Agency (EPA) Region 9 to Tetra Tech, Inc., a global consulting and engineering services firm. The purpose of this Task Order #00017 is to provide data support for the Navajo Area Uranium Mines (NAUM) Response, Assessment and Evaluation Services (RAES) program, which is focused on investigating and remediating abandoned uranium mines on and around the Navajo Nation. This task order is part of a larger...
- This is a $1,068,301.22 Delivery Order awarded to Tetra Tech, Inc. under the Navajo Area Uranium Mines Response Assessment and Evaluation Services II (NAUMRAES II) Indefinite Delivery/Indefinite Quantity (IDIQ) contract with the U.S. Environmental Protection Agency (EPA) Region 9. The task order requires Tetra Tech to provide technical assistance to the EPA for data and records management related to the Navajo Abandoned Uranium Mines (AUM) program. This is the sixth task order issued under the...
- Tetra Tech, Inc. was awarded a no-cost bilateral modification to extend the period of performance on a delivery order under the Navajo Area Uranium Mines Response Assessment and Evaluation Services II (NAUMRAES II) contract with the Environmental Protection Agency Region 9. The modification extends work through December 31, 2026, with a contract ceiling of approximately $6.1 million under time-and-materials pricing. The contractor will support the development of a conceptual site model, remedial...
- This federal contract award, valued at $529,309.13, was issued by the U.S. Environmental Protection Agency (EPA) Region 9 to Tetra Tech, Inc., a global consulting and engineering services firm. The contract is for the NN-AUM Response Assessment and Evaluation Services (RAES) II, an Indefinite Delivery/Indefinite Quantity (IDIQ) contract that supports EPA's Navajo Area Uranium Mines program. Under this contract, Tetra Tech will provide evaluations for the remaining 278 unfunded abandoned...
- This federal contract award is for the U.S. Environmental Protection Agency (EPA) Region 9 to provide technical assistance to the Contaminated Structures Program under the Navajo Area Uranium Mines Response Assessment and Evaluation Services II (NAUMRAES II) Indefinite Delivery/Indefinite Quantity (IDIQ) contract. The prime contractor is Tetra Tech, Inc., a global consulting and engineering services firm specializing in environmental assessment, compliance, and remediation services for federal...
- This federal contract award, issued by the Environmental Protection Agency (EPA) Region 9, tasks Tetra Tech, Inc. to provide oversight and technical review for Removal Site Evaluations (RSEs) and Risk Assessment documents for abandoned uranium mines (AUMs) under the Navajo Area Uranium Mines Response Assessment and Evaluation Services II (NAUMRAES II) contract, which has a ceiling value of $96,818.19. The contract is a Delivery Order under a Time and Materials pricing type, with a performance...
- This is a Time and Materials delivery order contract awarded by the U.S. Environmental Protection Agency (EPA) Region 9 to Tetra Tech, Inc., a large business prime contractor, for $439,774.54. The contract supports EPA oversight of Removal Site Evaluations (RSEs), Interim Removal Actions, Water Studies, Engineering Evaluations and Cost Analysis (EE/CAs), and Removal Actions at Abandoned Uranium Mines (AUMs) and mine areas on the Navajo Nation. This work is being performed under Tetra Tech's...
- This delivery order, awarded on September 29, 2023, to Tetra Tech, Inc. (Tetra TECH Em Inc.) by the EPA Region 9, provides technical design services, planning, and cleanup verification support for Tronox Abandoned Uranium Mines (AUMs) under the parent Navajo Area Uranium Mines Response Assessment and Evaluation Services II (NAUMRAES II) Indefinite Delivery/Indefinite Quantity contract (#68HE0923D0002). The task order, valued at $10.66 million with a ceiling, is performed on a Time and...
- This task order was awarded by the U.S. Environmental Protection Agency (EPA) Region 9 to Tetra Tech, Inc. under the EPA's $65 million Response, Assessment and Evaluation Services (RAES) indefinite delivery/indefinite quantity (IDIQ) contract. The purpose is to provide technical services for the Navajo Area Uranium Mines (NAUM) data support. This is task order #26, valued at $893,240.05, with a completion date of June 11, 2024. The contract type is time and materials, and there was no...
- This is a $8,393,087.69 delivery order contract awarded by the EPA Region 9 to Tetra Tech, Inc., a large business environmental consulting and engineering firm. The purpose of the contract is to provide technical support and assistance for the Navajo Abandoned Uranium Mines (NAUM) program, including developing program standards, training, workshops, and other technical support work for site investigations. The contract has no set-aside designation and runs through April 8, 2028. Key...
- 68HE0923D0002Indefinite Delivery Contract
- 68HE0923D0002-68HE0923F0061Delivery Order
This delivery order, valued at approximately $206K, was awarded to Tetra Tech, Inc. on July 25, 2023, under the Navajo Area Uranium Mines Response Assessment and Evaluation Services II (NAUMRAES II) contract—a $65 million Indefinite Delivery/Indefinite Quantity vehicle with EPA Region 9. The contractor will provide technical assistance for operating unmanned aerial vehicles and systems on Navajo Nation in accordance with EPA policy on unmanned aerial vehicle/unmanned aerial systems (UAV/UAS). The work is being performed in Window Rock, Arizona, and is structured as a time and materials delivery order with an ultimate completion date of July 25, 2026. The award included a unilateral modification designating Danielle Huang as the primary Contracting Officer's Representative and Kenyon Larsen as the alternate representative for UAV support activities. This contract award does not utilize a small business set-aside designation, consistent with Tetra Tech's status as a large business federal contractor. Tetra Tech specializes in environmental assessment, compliance, and remediation services and has demonstrated extensive experience delivering environmental and technical services to the EPA, particularly focused on abandoned uranium mine site evaluations and cleanup efforts on Navajo Nation. The contractor frequently engages minority-owned and small business subcontractors, such as Environmental Restoration Group, Iina Ba Inc., and Validata Chemical Services, to support complex environmental projects within this region.
Mod # | Description | ReasonForModification | Federal Obligation | Date |
|---|---|---|---|---|
| P00006 | Other Administrative Action | $0 | 10/23/25 | |
| P00005 | Supplemental Agreement for work within scope | $94.9k | 9/16/25 | |
| P00004 | Supplemental Agreement for work within scope | ($95k) | 8/28/25 | |
| P00003 | Supplemental Agreement for work within scope | $97.4k | 8/27/25 | |
| P00002 | Supplemental Agreement for work within scope | $0 | 4/1/25 |