Tetra Tech, INC.
UEI J8CNBANBZ6U8 · CA · subsidiary of Tetra Tech, INC. · SAM.gov record ↗
$23.9M
FY2025 obligations
33
Contract awards
Sep 25, 2022
First action
Jun 28, 2026
Latest action
Obligations by agency
- Environmental Protection Agency$23.4M
- Department Of Transportation$277K
- Department Of Defense$165K
Obligations by NAICS
Monthly obligations
Oct 24
Nov 24
Jan 25
Feb 25
Mar 25
Apr 25
May 25
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Dec 25
Jan 26
Feb 26
Mar 26
Apr 26
May 26
Jun 26
Contracts ending within 18 months (recompete watch)
| PIID | Description | Agency | NAICS | Obligated | Start | End |
|---|---|---|---|---|---|---|
| 697DCK25C00133 ↗ | ENVIRONMENTAL ASSESSMENT REPLACEMENT OF THE AIR ROUTE SURVEILLANCE RADAR (ARSR) ON MT. KA`ALA, OAHU, HAWAII | Federal Aviation Administration | 541715 | $277K | Apr 27, 2025 | Jul 23, 2026 |
| 68HE0923F0061 ↗ | THE PURPOSE OF THIS BILATERAL MODIFICATION EXTEND THE POP AND ADD UPDATED UAV MEMO. TO FOR UAV SUPPORT ON NAVAJO NATION IN ACCORDANCE UNDER THE RAES2 CONTRACT #68HE0923D0002 FOR EPA FOR REGIONS 6 & 9. | Environmental Protection Agency | 541620 | $97K | Jul 24, 2023 | Jul 24, 2026 |
| 68HE0923F0073 ↗ | THE PURPOSE OF THIS UNILATERAL MOD IS TO ADD INCREMENTAL FUNDING. CONTRACTOR SHALL PROVIDE TECHNICAL DESIGN SERVICES FOR PLANNING & CONDUCTING CLEANUP VERIFICATION UNDER THE RAES 2 CONTRACT #68HE0923D0002 FOR REGIONS 6 & 9. | Environmental Protection Agency | 541620 | $2.2M | Sep 17, 2023 | Jul 31, 2026 |
| 68HE0925F0051 ↗ | THE PURPOSE OF THIS TASK ORDER IS TO PROVIDE TECHNICAL SUPPORT TO EPA REGION 6 IN FULFILLMENT OF ITS RESPONSIBILITIES FOR OVERSIGHT AND ENFORCEMENT OF ARCO'S ONGOING RI/FS UNDER THE ASAOC AND TO ASSIST EPA IN COORDINATION AND COMMUNICATION WITH | Environmental Protection Agency | 541620 | $540K | Aug 5, 2025 | Aug 3, 2026 |
| 68HE0923F0068 ↗ | THE PURPOSE OF THIS UNILATERAL MOD IS TO CHANGE THE PRIMARY TOCOR. CONTRACTOR PROVIDES ASSISTANCE FOR OVERSIGHT OF THE PRP - WESTERN NUCLEAR AS THEY PERFORM EE/CAS AND RAS IN THE MARIANO LAKE AREA OF THE EASTERN AGENCY NAVAJO NATION. | Environmental Protection Agency | 541620 | $0 | Aug 10, 2023 | Aug 9, 2026 |
| 68HE0923F0069 ↗ | THE PURPOSE OF THIS UNILATERAL MODIFICATION IS TO ADD ATOCOR FOR THIS TO FOR THE REMOVAL SITE EVALUATIONS (RSES) AT THE ABANDONED URANIUM MINES (AUMS) AND MINE AREAS NAMED IN THE CYPRUS AMAX MINERALS COMPANY UNDER THE RAES 2 CONTRACT # 68HE0923D0002. | Environmental Protection Agency | 541620 | $0 | Aug 14, 2023 | Aug 13, 2026 |
| 68HE0923F0070 ↗ | THE PURPOSE OF THIS UNILATERAL MOD IS TO ADD SCOPE AND DOGE APPROVED FUNDING. THE CONTRACTOR SHALL PROVIDE EVALUATIONS FOR KNOWN 278 UNFUNDED AUMS ON THE NAVAJO NATION UNDER RAES II FOR EPA FOR REGIONS 6 & 9. | Environmental Protection Agency | 541620 | $746K | Sep 12, 2023 | Sep 12, 2026 |
| 68HE0923F0045 ↗ | THE PURPOSE OF THIS UNILATERAL MODIFICATION IS TO EXTEND THE POP. TO IS FOR TIME-CRITICAL REMOVAL ACTION (TCRA) PLANNING AND OVERSIGHT SUPPORT ASSOCIATED WITH THE OLD CHURCH ROCK MINE SITE, AS WELL AS PLANNING AND SCOPING FOR A NON-TIME CRITICAL REMO | Environmental Protection Agency | 541620 | $852K | Jun 6, 2023 | Sep 29, 2026 |
| 68HE0923F0074 ↗ | THE PURPOSE OF THIS UNILATERAL ADMINISTRATIVE MODIFICATION IS TO CORRECT LINE ITEM POPS. THE CONTRACTOR SHALL PROVIDE THE SUPPORT NEEDED FOR INTERIM ACTIONS AT TRONOX AUMS UNDER THE RAES II CONTRACT #68HE0923D0002 FOR EPA FOR REGIONS 6 AND 9. MOD P00 | Environmental Protection Agency | 541620 | $3.3M | Sep 28, 2023 | Sep 29, 2026 |
| 68HE0924F0017 ↗ | THE PURPOSE OF THIS NO-COST MODIFICATION IS TO EXTEND THE PERIOD OF PERFORMANCE FOR R6 SCMB- TO 23 - NAVAJO NATION AUM RESPONSE ASSESSMENT AND EVALUATION SERVICES (RAES) II FOR EPA FOR REGIONS 6 & 9. | Environmental Protection Agency | 541620 | $0 | May 12, 2024 | Sep 29, 2026 |
Largest awards
| PIID | Description | Agency | NAICS | Obligated | Start | End |
|---|---|---|---|---|---|---|
| 68HE0923F0051 ↗ | THE PURPOSE OF THIS BILATERAL MOD IS TO ADD SCOPE AND FUNDING TO CONDUCT EE/CAS IN NAVAJO NATION'S NORTHERN AGENCY. THIS IS A MOD 3 FOR TO 07 UNDER RAES 2 CONTRACT #68HE0923D0002. | Environmental Protection Agency | 541620 | $6.0M | Jul 19, 2023 | Nov 18, 2026 |
| 68HE0923F0071 ↗ | THE PURPOSE OF THIS BILATERAL MOD IS TO INCORPORATE A REVISED SOW AND KTR WORK PLAN, INCREASE THE LOE FOR A FEW TASKS, AND ADD A NEW ALTERNATE TOCOR. THIS IS MOD P00005 FOR TO 15 THAT PROVIDES SUPPORT FOR NAUM PROGRAM TO DEVELOP PROGRAM STANDARDS UND | Environmental Protection Agency | 541620 | $5.0M | Sep 11, 2023 | Apr 7, 2028 |
| 68HE0923F0074 ↗ | THE PURPOSE OF THIS UNILATERAL ADMINISTRATIVE MODIFICATION IS TO CORRECT LINE ITEM POPS. THE CONTRACTOR SHALL PROVIDE THE SUPPORT NEEDED FOR INTERIM ACTIONS AT TRONOX AUMS UNDER THE RAES II CONTRACT #68HE0923D0002 FOR EPA FOR REGIONS 6 AND 9. MOD P00 | Environmental Protection Agency | 541620 | $3.3M | Sep 28, 2023 | Sep 29, 2026 |
| 68HE0923F0073 ↗ | THE PURPOSE OF THIS UNILATERAL MOD IS TO ADD INCREMENTAL FUNDING. CONTRACTOR SHALL PROVIDE TECHNICAL DESIGN SERVICES FOR PLANNING & CONDUCTING CLEANUP VERIFICATION UNDER THE RAES 2 CONTRACT #68HE0923D0002 FOR REGIONS 6 & 9. | Environmental Protection Agency | 541620 | $2.2M | Sep 17, 2023 | Jul 31, 2026 |
| 68HE0923F0072 ↗ | THE PURPOSE OF THIS BILATERAL MODIFICATION IS TO ADD SCOPE AND FUNDING TO TO 16 UNDER RAES 2 CONTRACT #68HE0923D0002. | Environmental Protection Agency | 541620 | $1.5M | Aug 15, 2023 | Dec 30, 2026 |
| 68HE0924F0004 ↗ | THE PURPOSE OF MODIFICATION P00005 IS TO ADD NEW TASKS AND ADD ADDITIONAL FUNDING FOR THE RSE AT THE SKYLINE AUM UNDER THE RAES II CONTRACT FOR EPA FOR REGIONS 6 & 9. | Environmental Protection Agency | 541620 | $1.4M | Nov 21, 2023 | Dec 30, 2026 |
| 68HE0923F0045 ↗ | THE PURPOSE OF THIS UNILATERAL MODIFICATION IS TO EXTEND THE POP. TO IS FOR TIME-CRITICAL REMOVAL ACTION (TCRA) PLANNING AND OVERSIGHT SUPPORT ASSOCIATED WITH THE OLD CHURCH ROCK MINE SITE, AS WELL AS PLANNING AND SCOPING FOR A NON-TIME CRITICAL REMO | Environmental Protection Agency | 541620 | $852K | Jun 6, 2023 | Sep 29, 2026 |
| 68HE0923F0070 ↗ | THE PURPOSE OF THIS UNILATERAL MOD IS TO ADD SCOPE AND DOGE APPROVED FUNDING. THE CONTRACTOR SHALL PROVIDE EVALUATIONS FOR KNOWN 278 UNFUNDED AUMS ON THE NAVAJO NATION UNDER RAES II FOR EPA FOR REGIONS 6 & 9. | Environmental Protection Agency | 541620 | $746K | Sep 12, 2023 | Sep 12, 2026 |
| 68HE0925F0048 ↗ | THE PURPOSE OF THIS TASK ORDER IS ESTABLISH A TASK ORDER 27 TO PROVIDE TECHNICAL SUPPORT TO REGION 6 FOR OVERSIGHT OF AN ONGOING PRP RI/FS AND GOVERNMENT RI/FS AT THE HOMESTAKE MINING COMPANY UNDER THE RAES 2 CONTRACT. | Environmental Protection Agency | 541620 | $686K | Jun 1, 2025 | Apr 30, 2027 |
| 68HE0925F0051 ↗ | THE PURPOSE OF THIS TASK ORDER IS TO PROVIDE TECHNICAL SUPPORT TO EPA REGION 6 IN FULFILLMENT OF ITS RESPONSIBILITIES FOR OVERSIGHT AND ENFORCEMENT OF ARCO'S ONGOING RI/FS UNDER THE ASAOC AND TO ASSIST EPA IN COORDINATION AND COMMUNICATION WITH | Environmental Protection Agency | 541620 | $540K | Aug 5, 2025 | Aug 3, 2026 |
| 68HE0923F0049 ↗ | THE PURPOSE OF THIS BILATERAL MOD IS TO EXTEND THE POP, CHANGE ALTERNATE TOCORS, AND ADD FUNDS. THE CONTRACTOR PROVIDES TA FOR DATA AND RECORDS MANAGEMENT RELATED TO THE NAVAJO AUM PROGRAM. THIS IS MOD P00002, TASK ORDER 6 FOR THE RAES 2 CONTRACT, #6 | Environmental Protection Agency | 541620 | $371K | Jul 11, 2023 | Jul 11, 2026 |
| 697DCK25C00133 ↗ | ENVIRONMENTAL ASSESSMENT REPLACEMENT OF THE AIR ROUTE SURVEILLANCE RADAR (ARSR) ON MT. KA`ALA, OAHU, HAWAII | Federal Aviation Administration | 541715 | $277K | Apr 27, 2025 | Jul 23, 2026 |
| 68HE0923F0077 ↗ | 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. | Environmental Protection Agency | 541620 | $268K | Sep 17, 2023 | Apr 29, 2028 |
| 68HE0923F0048 ↗ | 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. | Environmental Protection Agency | 541620 | $231K | Jun 6, 2023 | Jun 5, 2028 |
| W9123823F0036 ↗ | REA MODIFICATION | Department Of The Army | 562910 | $165K | Aug 1, 2023 | Jun 23, 2025 |
| 68HE0923F0042 ↗ | THE PURPOSE OF THIS BILATERAL MOD ADDS SCOPE, FUNDING, AND TWO (2) OPTION YEARS. THE CONTRACTOR WILL ASSIST EPA IN COMMUNITY INVOLVEMENT OUTREACH SUPPORT INCLUDING CALLS, REMOTE MEETINGS AND FACE TO FACE ASSEMBLIES UNDER THE RAES 2 CONTRACT #68HE0092 | Environmental Protection Agency | 541620 | $114K | May 31, 2023 | Apr 8, 2028 |
| 68HE0923F0061 ↗ | THE PURPOSE OF THIS BILATERAL MODIFICATION EXTEND THE POP AND ADD UPDATED UAV MEMO. TO FOR UAV SUPPORT ON NAVAJO NATION IN ACCORDANCE UNDER THE RAES2 CONTRACT #68HE0923D0002 FOR EPA FOR REGIONS 6 & 9. | Environmental Protection Agency | 541620 | $97K | Jul 24, 2023 | Jul 24, 2026 |
| 68HE0925F0047 ↗ | THE CONTRACTOR SHALL PERFORM OVERSITE AND TECHNICAL REVIEW FOR REMOVAL SITE EVALUATIONS (RSE) AND RISK ASSESSMENT DOCUMENTS FOR WELLS CARGO ABANDONED URANIUM MINES (AUMS) UNDER THE RAES 2 CONTRACT 68HE0923D0002. | Environmental Protection Agency | 541620 | $97K | Apr 22, 2025 | Apr 29, 2028 |
| 68HE0923F0067 ↗ | THE PURPOSE OF THIS UNILATERAL MOD IS TO ADD INCREMENTAL FUNDING. THE CONTRACTOR SHALL PROVIDE TECH ASSIST, FOR OVERSIGHT OF PRP AS THEY PERFORM AN EE/CA FOR THE MAC & BLACKJACK MINES FOR CONTRACT 68HE0923D0002, THE (RAES)II FOR EPA FOR RGNS 6 AN | Environmental Protection Agency | 541620 | $50K | Aug 9, 2023 | Aug 8, 2027 |
| 68HE0925F0054 ↗ | TO 29 IS TO TO PROVIDE TECHNICAL ASSISTANCE FOR OVERSIGHT OF THE POTENTIALLY RESPONSIBLE PARTY (PRP) BNSF RAILWAY COMPANY (BNSF) AS THEY PERFORM A BACKGROUND STUDY, DATA GAPS ANALYSIS AND ENGINEERING EVALUATIONS/COST ANALYSES (EE/CA). | Environmental Protection Agency | 541620 | $50K | Jun 30, 2025 | Jun 29, 2027 |
| 68HE0923F0068 ↗ | THE PURPOSE OF THIS UNILATERAL MOD IS TO CHANGE THE PRIMARY TOCOR. CONTRACTOR PROVIDES ASSISTANCE FOR OVERSIGHT OF THE PRP - WESTERN NUCLEAR AS THEY PERFORM EE/CAS AND RAS IN THE MARIANO LAKE AREA OF THE EASTERN AGENCY NAVAJO NATION. | Environmental Protection Agency | 541620 | $0 | Aug 10, 2023 | Aug 9, 2026 |
| 68HE0923F0044 ↗ | THE PURPOSE OF UNILATERAL MODIFICATION IS TO EXTEND THE POP. CONTRACTOR WILL PERFORM EE/CAS AT THE SECTION 32/33 MINES FOR THE RAES II CONTRACT. | Environmental Protection Agency | 541620 | $0 | Jun 4, 2023 | Apr 8, 2028 |
| 68HE0923F0078 ↗ | THE PURPOSE OF THIS NO-COST BILATERAL MODIFICATION P00005 IS TO EXTEND THE PERIOD OF PERFORMANCE. THE CONTRACTOR SHALL PROVIDE SUPPORT NEEDED FOR NTCRA PLANNING AND OVERSIGHT ON BABBITT RANCHES UNDER RAES 2 CONTRACT #68HE0923D0002. | Environmental Protection Agency | 541620 | $0 | Sep 17, 2023 | Apr 8, 2028 |
| 68HE0924F0051 ↗ | THE PURPOSE OF THIS UNILATERAL MOD IS TO ADD AN ALTERNATE TOCOR. TO IS FOR AGENCY OVERSIGHT OF UNC/GE WORK AT NECR MINE SITE UNDER RAES 2 CONTRACT. | Environmental Protection Agency | 541620 | $0 | Jul 22, 2024 | Apr 8, 2028 |
| 68HE0923F0041 ↗ | 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. | Environmental Protection Agency | 541620 | $0 | May 31, 2023 | Apr 9, 2028 |