01 / Contract Profile
68HE0923F0048 Federal Contract Award
Agency code 6800
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
02 / Contract Size and Status
What is the recorded size and timing of this contract?
03 / Spending Trend
68HE0923F0048 contract spending by fiscal year
Annual net obligations across the complete period available for this agency and PIID, from the first recorded fiscal year through the latest contract action.
Latest fiscal year obligations$0
FY 2026Net obligationsComplete recorded range
| Fiscal year | Net obligations | Actions | Change |
|---|---|---|---|
| FY 2023 | $83.4K | 1 | — |
| FY 2024 | $125.4K | 2 | +50.5% |
| FY 2025 | $231.0K | 3 | +84.2% |
| FY 2026 | $0 | 1 | −100.0% |
04 / Federal Buyer
Which organization manages this contract?
| Department | Contracting agency | Contracting office |
|---|---|---|
| ENVIRONMENTAL PROTECTION AGENCY | ENVIRONMENTAL PROTECTION AGENCY | REGION 9 CONTRACTING OFFICE |
05 / Contractor
Who holds this federal contract?
TETRA TECH, INC.
UEI J8CNBANBZ6U8 · CAGE 1HWF1
06 / NAICS Industries
Which industries classify this contract?
| Code | Description | Obligations | Actions | Share |
|---|---|---|---|---|
| 541620 | ENVIRONMENTAL CONSULTING SERVICES | $439.8K | 7 | 100.0% |
07 / Products and Services
What products or services were purchased?
| Code | Description | Obligations | Actions | Share |
|---|---|---|---|---|
| B510 | SPECIAL STUDIES/ANALYSIS- ENVIRONMENTAL ASSESSMENTS | $439.8K | 7 | 100.0% |
08 / Place of Performance
Where is the work recorded?
WINDOW ROCK, APACHE, ARIZONA, UNITED STATES
ZIP 865150001
09 / Contract Actions
What modifications and obligations were recorded?
| Signed date | Modification | Obligation | Contracting office | NAICS | PSC |
|---|---|---|---|---|---|
| Jun 29, 2026 | P00006 | $0 | REGION 9 CONTRACTING OFFICEOffice code 68HE09 | 541620 | B510 |
| Sep 29, 2025 | P00005 | $231.0K | REGION 9 CONTRACTING OFFICEOffice code 68HE09 | 541620 | B510 |
| Aug 20, 2025 | P00004 | $0 | REGION 9 CONTRACTING OFFICEOffice code 68HE09 | 541620 | B510 |
| Jun 4, 2025 | P00003 | $0 | REGION 9 CONTRACTING OFFICEOffice code 68HE09 | 541620 | B510 |
| Aug 5, 2024 | P00002 | $125.4K | REGION 9 CONTRACTING OFFICEOffice code 68HE09 | 541620 | B510 |
| Jun 18, 2024 | P00001 | $0 | REGION 9 CONTRACTING OFFICEOffice code 68HE09 | 541620 | B510 |
| Jun 7, 2023 | Base action | $83.4K | REGION 9 CONTRACTING OFFICEOffice code 68HE09 | 541620 | B510 |
10 / Reading the Contract
How should this award record be interpreted?
Read the PIID as a transaction history, not as a single purchase price. Net obligations combine the base action with later increases, reductions, corrections, and deobligations recorded under the same contract.
Verify the buyer
Agency and office identify who manages the procurement relationship.
Follow modifications
Each action can change funding, scope, dates, or administrative terms.
Compare the market
Use NAICS, PSC, and the contractor profile to identify related buyers and competitors.