68HE0923F0048↗
Tetra Tech, Inc. received this contract from Region 9 Contracting Office, Environmental Protection Agency: $439.8K obligated so far for special studies/analysis- environmental assessments. It runs to 2028-06-06.
Key facts · data as of Oct 26, 2026
- Recipient
- Tetra Tech, Inc.
- Awarding agency
- Environmental Protection Agency
- Contracting office
- Region 9 Contracting Office (68HE09)
- Obligated to date
- $439.8K
- Potential value
- $439.8K
- Ends
- 2028-06-06
Source: USAspending.gov prime award records (obligations: money committed, not outlays), data as of Oct 26, 2026.
Cite this page: SpendQuery, Award 68HE0923F0048, data as of Oct 26, 2026, https://spendquery.com/award?id=CONT_AWD_68HE0923F0048_6800_68HE0923D0002_6800
Tetra Tech, Inc.: all federal awards · Environmental Protection Agency: spending · Region 9 Contracting Office: what it buys · The follow-on: recompete brief
THE CONTRACTOR SHALL SUPPORT AGENCY OVERSITE OF REMOVAL SITE EVALUATIONS (RSES), INTERIM REMOVAL ACTIONS, WATER STUDIES, ENGINEERING EVALUATIONS AND COST ANALYSIS (EE/CAS), AND REMOVAL ACTIONS AT THE ABANDONED URANIUM MINES (AUMS) AND MINE AREAS NAME
Up for re-bid: ends 2028-06-06. Recompete brief →
What it is
- Product or service
- Special Studies/Analysis- Environmental Assessments (PSC B510)
- Industry
- Environmental Consulting Services (NAICS 541620)
- Contracting office
- Region 9 Contracting Office (68HE09)
- Competition
- Full and open competition
- Pricing
- Time and materials
- How it was bought
- Single-award IDIQ · under 68HE0923D0002
- Solicitation
- TO0005
- Where the work is
- Apache, AZ · district AZ-01
Obligations by fiscal year
SpendQuery holds FY2023 on; earlier years are on USAspending.gov.
Subcontractors: where the money went next
No subawards reported for this award. Primes report subawards of $30,000 or more; many awards have none.
Every action
7 actions since 2023-06-07. Each is a modification or amendment with the money it added or took back.
| Date | Modification | Kind | Amount | What the agency wrote |
|---|---|---|---|---|
| 2026-06-29 | P00006 | Supplemental agreement (work within scope) | $0 | THE PURPOSE OF THIS NO-COST, BILATERAL MODIFICATION IS TO EXTEND THE PERIOD OF PERFORMANCE AND ADD A NEW ALTERNATE TOCOR. THE CONTRACTOR SUPPORTS AGENCY OVERSITE OF RSES,, INTERIM RAS, WATER STUDIES, EE/CAS, AND RAS AUMS IN THE PHASE 2 EXPANDED TRUST |
| 2025-09-29 | P00005 | Supplemental agreement (work within scope) | $231.0K | THE PURPOSE OF THIS BILATERAL MODIFICATION IS TO INCORPORATE A REVISED SOW, INCORPORATE WORK PLAN/COST PLAN (WP/CP), INCREASE HOURS FOR CERTAIN TASKS OF THE SOW, AND ADD FUNDING FOR THE INCREASED HOURS. THE CONTRACTOR SUPPORTS AGENCY OVERSITE OF RSES |
| 2025-08-20 | P00004 | Administrative change | $0 | THE PURPOSE OF THIS UNILATERAL MOD IS TO CORRECT THE POP ON LINE ITEM 0001 . THE CONTRACTOR SUPPORTS AGENCY OVERSITE OF RSES,, INTERIM RAS, WATER STUDIES, EE/CAS, AND RAS AUMS IN THE PHASE 2 EXPANDED TRUST AGREEMENT UNDER THE RAES 2 CONTRACT. |
| 2025-06-04 | P00003 | Supplemental agreement (work within scope) | $0 | THE PURPOSE OF THIS UNILATERAL MOD IS TO EXTEND THE POP. THE CONTRACTOR SUPPORTS AGENCY OVERSITE OF RSES,, INTERIM RAS, WATER STUDIES, EE/CAS, AND RAS AUMS IN THE PHASE 2 EXPANDED TRUST AGREEMENT UNDER THE RAES 2 CONTRACT. |
| 2024-08-05 | P00002 | Supplemental agreement (work within scope) | $125.4K | THE PURPOSE OF THIS BILATERAL MOD IS TO INCORPORATE REVISED SOW, EXTEND THE POP, AND CHANGE THE TOCORS. THE CONTRACTOR SUPPORTS AGENCY OVERSITE OF RSES,, INTERIM RAS, WATER STUDIES, EE/CAS, AND RAS AUMS IN THE PHASE 2 EXPANDED TRUST AGREEMENT UNDER T |
| 2024-06-18 | P00001 | Supplemental agreement (work within scope) | $0 | THE PURPOSE OF THIS BILATERAL MOD IS TO EXTEND THE POP. THE CONTRACTOR SHALL SUPPORT AGENCY OVERSITE OF RSES,, INTERIM RAS, WATER STUDIES, EE/CAS, AND RAS AT THE ABANDONED URANIUM MINES (AUMS) AND MINE AREAS NAMED IN THE PHASE 2 EXPANDED TRUST AGREEM |
| 2023-06-07 | 0 | $83.4K | THE CONTRACTOR SHALL SUPPORT AGENCY OVERSITE OF REMOVAL SITE EVALUATIONS (RSES), INTERIM REMOVAL ACTIONS, WATER STUDIES, ENGINEERING EVALUATIONS AND COST ANALYSIS (EE/CAS), AND REMOVAL ACTIONS AT THE ABANDONED URANIUM MINES (AUMS) AND MINE AREAS NAME |
Source: USAspending.gov prime award transactions and FSRS subaward reports, as loaded by SpendQuery (data as of 2026-10-26). Amounts are obligations (money committed), not outlays. The official record on USAspending.gov ↗