68HE0923F0041↗
Tetra Tech, Inc. received this contract from Region 9 Contracting Office, Environmental Protection Agency: $4.67M obligated so far for special studies/analysis- environmental assessments. It runs to 2028-04-10.
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
- $4.67M
- Potential value
- $4.67M
- Ends
- 2028-04-10
Source: USAspending.gov prime award records (obligations: money committed, not outlays), data as of Oct 26, 2026.
Cite this page: SpendQuery, Award 68HE0923F0041, data as of Oct 26, 2026, https://spendquery.com/award?id=CONT_AWD_68HE0923F0041_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
CONTRACTOR WILL PERFORM ENGINEERING EVALUATION/COST ANALYSIS (EE/CA) AND RELATED TASKS AT THE QUIVIRA MINE FOR THE RESPONSE ASSESSMENT AND EVALUATION SERVICES (RAES) II CONTRACT FOR EPA FOR REGIONS 6 & 9.
Up for re-bid: ends 2028-04-10. 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
- Mckinley, NM · district NM-03
Obligations by fiscal year
SpendQuery holds FY2023 on; earlier years are on USAspending.gov.
Subcontractors: where the money went next
13 subawards totaling $2.22M (47.5% of what was obligated), as Tetra Tech, Inc. reported them. Primes report subawards of $30,000 or more; smaller ones and unreported ones aren't here.
| Subcontractor | Amount | Subawards | Where | First | Last |
|---|---|---|---|---|---|
| Iina Ba Inc | $1.24M | 7 | NM | 2023-06-26 | 2024-05-01 |
| Riley Engineering, LLC | $484.4K | 2 | AZ | 2025-07-23 | 2025-07-24 |
| Dinetahdoo Cultural Resources LLC | $300.0K | 1 | NM | 2023-06-13 | 2023-06-13 |
| Eurofins Environment Testing South Central, LLC | $94.2K | 1 | NM | 2026-05-13 | 2026-05-13 |
| BSN Santa Fe Enterprises Inc | $58.4K | 1 | NM | 2025-11-11 | 2025-11-11 |
| Environmental Restoration Group, Inc | $47.1K | 1 | NM | 2023-06-26 | 2023-06-26 |
The largest single subawards
| Date | To | Amount | For |
|---|---|---|---|
| 2024-01-12 | Iina Ba Inc | $411.5K | TEAM SUB LABOR SUPPORT AND EQUIPMENT RENTAL FOR QUIVIRA PROJECT |
| 2023-06-13 | Dinetahdoo Cultural Resources LLC | $300.0K | CULTURAL RESOURCE MONITORING SERVICES |
| 2025-07-24 | Riley Engineering, LLC | $256.3K | RED ROCKS BASELINE H&H STUDY |
| 2023-10-31 | Iina Ba Inc | $240.6K | TEAM SUB LABOR SUPPORT AND EQUIPMENT RENTAL |
| 2025-07-23 | Riley Engineering, LLC | $228.1K | TEAM SUB LABOR SUPPORT. ALL WORK UNDER THIS RELEASE ORDER IS COMPLETE. |
| 2024-04-11 | Iina Ba Inc | $223.7K | TEAM SUB LABOR SUPPORT AND EQUIPMENT RENTAL FOR QUIVIRA PROJECT |
| 2024-05-01 | Iina Ba Inc | $159.6K | TEAM SUB LABOR SUPPORT AND EQUIPMENT RENTAL FOR QUIVIRA PROJECT |
| 2024-03-05 | Iina Ba Inc | $117.0K | TEAM SUB LABOR SUPPORT AND EQUIPMENT RENTAL FOR QUIVIRA PROJECT |
| 2026-05-13 | Eurofins Environment Testing South Central, LLC | $94.2K | LABORATORY ANALYSIS FOR PROPOSED WASTE REPOSITORY AT RED ROCK REGIONAL LANDFILL FACILITY |
| 2025-11-11 | BSN Santa Fe Enterprises Inc | $58.4K | SURVEYING SERVICE - RED ROCKS LANDFILL SITE, THOREAU, NM |
| 2023-08-24 | Iina Ba Inc | $51.5K | TEAM SUB LABOR SUPPORT AND EQUIPMENT RENTAL |
| 2023-06-26 | Environmental Restoration Group, Inc | $47.1K | TEAM SUB LABOR SUPPORT AND EQUIPMENT RENTAL |
| 2023-06-26 | Iina Ba Inc | $31.1K | TEAM SUB LABOR SUPPORT AND EQUIPMENT RENTAL |
Every action
5 actions since 2023-05-31. Each is a modification or amendment with the money it added or took back.
| Date | Modification | Kind | Amount | What the agency wrote |
|---|---|---|---|---|
| 2026-05-22 | P00004 | Supplemental agreement (work within scope) | $0 | THE PURPOSE OF THIS BILATERAL MODIFICATION IS TO EXTEND THE POP. CONTRACTOR WILL PERFORM EE/CA TASKS AT THE QUIVIRA MINE FOR THE RAES 2 CONTRACT. |
| 2024-11-18 | P00003 | Administrative change | $0 | THE PURPOSE OF THIS UNILATERAL MODIFICATION IS TO EXTEND THE POP. CONTRACTOR WILL PERFORM EE/CA TASKS AT THE QUIVIRA MINE FOR THE RAES 2 CONTRACT. |
| 2024-01-31 | P00002 | Change order | $1.27M | THE PURPOSE OF THIS BILATERAL MOD IS TO ADD SCOPE AND FUNDING. CONTRACTOR WILL PERFORM ENGINEERING EVALUATION/COST ANALYSIS (EE/CA) AND RELATED TASKS AT THE QUIVIRA MINE FOR THE RESPONSE ASSESSMENT AND EVALUATION SERVICES CONTRACT. |
| 2023-09-22 | P00001 | Administrative change | $0 | THE PURPOSE OF THIS UNILATERAL MOD IS TO CHANGE THE PRIMARY TOCOR. CONTRACTOR WILL PERFORM ENGINEERING EVALUATION/COST ANALYSIS (EE/CA) AND RELATED TASKS AT THE QUIVIRA MINE FOR THE RESPONSE ASSESSMENT AND EVALUATION SERVICES (RAES) II CONTRACT FOR E |
| 2023-05-31 | 0 | $3.40M | CONTRACTOR WILL PERFORM ENGINEERING EVALUATION/COST ANALYSIS (EE/CA) AND RELATED TASKS AT THE QUIVIRA MINE FOR THE RESPONSE ASSESSMENT AND EVALUATION SERVICES (RAES) II CONTRACT FOR EPA FOR REGIONS 6 & 9. |
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 ↗