68HE0923F0077↗
Tetra Tech, Inc. received this contract from Region 9 Contracting Office, Environmental Protection Agency: $428.9K obligated so far for special studies/analysis- environmental assessments. It runs to 2028-04-30.
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
- $428.9K
- Potential value
- $428.9K
- Ends
- 2028-04-30
Source: USAspending.gov prime award records (obligations: money committed, not outlays), data as of Oct 26, 2026.
Cite this page: SpendQuery, Award 68HE0923F0077, data as of Oct 26, 2026, https://spendquery.com/award?id=CONT_AWD_68HE0923F0077_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 PROVIDE SUPPORT FOR NON TIME-CRITICAL REMOVAL ACTION PLANNING & OVERSIGHT SUPT ASSOCIATED W/ENPRO HOLDINGS ON NAVAJO NATION UNDER THE RESPONSE ASSESSMENT & EVALUATION SERVICES (RAES) II CONTRACT #68HE0923D0002.
Up for re-bid: ends 2028-04-30. 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
- Where the work is
- Coconino, AZ · district AZ-02
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
5 actions since 2023-09-18. Each is a modification or amendment with the money it added or took back.
| Date | Modification | Kind | Amount | What the agency wrote |
|---|---|---|---|---|
| 2026-02-18 | P00004 | Change order | $267.5K | THE PURPOSE OF THIS BILATERAL MODIFICATION P00004 IS TO INCREASE LEVEL OF EFFORT, ADD FUNDING, AND EXTEND THE POP. CONTRACTOR SHALL PROVIDE SUPPORT FOR NTCRA PLANNING & OVERSIGHT SUPT ASSOCIATED W/ENPRO HOLDINGS ON NAVAJO NATION UNDER THE RAES2 C |
| 2025-06-25 | P00003 | Supplemental agreement (work within scope) | $0 | THE PURPOSE OF NO COST BILATERAL MODIFICATION P00003 IS TO EXTEND THE POP. CONTRACTOR SHALL PROVIDE SUPPORT FOR NTCRA PLANNING & OVERSIGHT SUPT ASSOCIATED W/ENPRO HOLDINGS ON NAVAJO NATION UNDER THE RAES2 CONTRACT #68HE0923D0002. |
| 2024-08-21 | P00002 | Supplemental agreement (work within scope) | $0 | THE PURPOSE OF UNILATERAL MOD P00002 IS TO EXTEND THE POP. CONTRACTOR SHALL PROVIDE SUPPORT FOR NTCRA PLANNING & OVERSIGHT SUPT ASSOCIATED W/ENPRO HOLDINGS ON NAVAJO NATION UNDER THE RAES2 CONTRACT #68HE0923D0002. |
| 2023-09-19 | P00001 | Administrative change | $0 | THE PURPOSE OF THIS UNILATERAL MOD IS TO CORRECT VERBIAGE IN LINE ITEM 0001 DESCRIPTION AND MAXIMUM EXPIRATION DATE. THE CONTRACTOR SHALL PROVIDE SUPPORT FOR NTCRA PLANNING & OVERSIGHT SUPT ASSOCIATED W/ENPRO HOLDINGS ON NAVAJO NATION UNDER THE R |
| 2023-09-18 | 0 | $161.3K | THE CONTRACTOR SHALL PROVIDE SUPPORT FOR NON TIME-CRITICAL REMOVAL ACTION PLANNING & OVERSIGHT SUPT ASSOCIATED W/ENPRO HOLDINGS ON NAVAJO NATION UNDER THE RESPONSE ASSESSMENT & EVALUATION SERVICES (RAES) II CONTRACT #68HE0923D0002. |
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 ↗