NAICS 541620 · Environmental Consulting Services
121 open opportunities · 7,964 FY2025 awards · $1.74B obligated
Top contractors in this NAICS
- Weston Solutions INC$104.6M
- Eastern Research Group INC$100.9M
- Lynker Corporation$63.6M
- S C & A INC$60.0M
- Hsg, LLC$52.0M
- Vernadero Group INC$49.2M
- Gulf South Research Corp$47.0M
- Tetra Tech, INC.$35.1M
Hunting recompetes here?
10+ contracts in this NAICS end within 18 months. The largest are listed below — incumbents and end dates included.
All expiring 541620 contracts →Open opportunities
- B--AK-DIV OF MIG BIRDS-MURRELET FINAL REPOR
- Deadline
- Sep 19, 2026(14d)
- Agency
- US FISH AND WILDLIFE SERVICE
- Type
- Special Notice
- NAICS
- 541620
- Posted
- Sep 3, 2026
- Industrial Hygiene Surveys for 19 MSARNG Maintenance Facilities - Synopsis of Contract Award (pursuant to FAR 5.3)
- Deadline
- —
- Agency
- DEPT OF THE ARMY
- Type
- Award Notice
- NAICS
- 541620
- Posted
- Sep 3, 2026
- ONYX RANCH SVRA PROJECT
- Deadline
- Sep 17, 2026(12d)
- Agency
- US GEOLOGICAL SURVEY
- Type
- Solicitation
- NAICS
- 541620
- Posted
- Sep 3, 2026
- F--Oregon/Washington Terrestrial Assessment, Inventory, and Monitoring Surveys
- Deadline
- —
- Agency
- BUREAU OF LAND MANAGEMENT
- Type
- Award Notice
- NAICS
- 541620
- Posted
- Sep 3, 2026
- B--AZ BUENOS AIRES NWR WATER WELL STUDY BPA Call
- Deadline
- —
- Agency
- US FISH AND WILDLIFE SERVICE
- Type
- Award Notice
- NAICS
- 541620
- Posted
- Sep 3, 2026
- Industrial Hygiene Survey at NAS JRB New Orleans Louisiana
- Deadline
- Sep 11, 2026(6d)
- Agency
- DEPT OF THE NAVY
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541620
- Posted
- Sep 2, 2026
- WSMR DPW Air Permit
- Deadline
- —
- Agency
- DEPT OF THE ARMY
- Type
- Award Notice
- NAICS
- 541620
- Posted
- Sep 2, 2026
- Underground Storage Tank (UST) Compliance Services at Miramar National Cemetery
- Deadline
- —
- Agency
- VETERANS AFFAIRS, DEPARTMENT OF
- Type
- Award Notice
- NAICS
- 541620
- Posted
- Sep 2, 2026
- F--MINUTE MAN NHP - PRE-DEMO HAZMAT SURVEY
- Deadline
- Sep 4, 2026
- Agency
- NATIONAL PARK SERVICE
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541620
- Posted
- Sep 2, 2026
- The purpose of this solicitation is to provide sur
- Deadline
- Sep 16, 2026(11d)
- Agency
- BUREAU OF LAND MANAGEMENT
- Type
- Solicitation
- NAICS
- 541620
- Posted
- Sep 1, 2026
- St. Louis District Environmental Consulting Services
- Deadline
- —
- Agency
- DEPT OF THE ARMY
- Type
- Presolicitation
- NAICS
- 541620
- Posted
- Sep 1, 2026
- Air Emissions Inventory & Compliance Assessment
- Deadline
- Sep 11, 2026(6d)
- Agency
- VETERANS AFFAIRS, DEPARTMENT OF
- Type
- Presolicitation
- NAICS
- 541620
- Posted
- Sep 1, 2026
- B--BLM KFO VEGETATION MGMT PLAN
- Deadline
- —
- Agency
- BUREAU OF LAND MANAGEMENT
- Type
- Award Notice
- NAICS
- 541620
- Posted
- Sep 1, 2026
- R--OH - OH ESFO - Conservation Framework for Listed S
- Deadline
- —
- Agency
- US FISH AND WILDLIFE SERVICE
- Type
- Award Notice
- NAICS
- 541620
- Posted
- Sep 1, 2026
- Pine Ridge Environmental Assessment for Great Plai
- Deadline
- Sep 11, 2026(6d)
- Agency
- BUREAU OF INDIAN AFFAIRS
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541620
- Posted
- Sep 1, 2026
| Title | Agency | Type | NAICS | Posted | Deadline |
|---|---|---|---|---|---|
| B--AK-DIV OF MIG BIRDS-MURRELET FINAL REPOR | US FISH AND WILDLIFE SERVICE | Special Notice | 541620 | Sep 3, 2026 | Sep 19, 2026(14d) |
| Industrial Hygiene Surveys for 19 MSARNG Maintenance Facilities - Synopsis of Contract Award (pursuant to FAR 5.3) | DEPT OF THE ARMY | Award Notice | 541620 | Sep 3, 2026 | — |
| ONYX RANCH SVRA PROJECT | US GEOLOGICAL SURVEY | Solicitation | 541620 | Sep 3, 2026 | Sep 17, 2026(12d) |
| F--Oregon/Washington Terrestrial Assessment, Inventory, and Monitoring Surveys | BUREAU OF LAND MANAGEMENT | Award Notice | 541620 | Sep 3, 2026 | — |
| B--AZ BUENOS AIRES NWR WATER WELL STUDY BPA Call | US FISH AND WILDLIFE SERVICE | Award Notice | 541620 | Sep 3, 2026 | — |
| Industrial Hygiene Survey at NAS JRB New Orleans Louisiana | DEPT OF THE NAVY | Combined Synopsis/Solicitation | 541620 | Sep 2, 2026 | Sep 11, 2026(6d) |
| WSMR DPW Air Permit | DEPT OF THE ARMY | Award Notice | 541620 | Sep 2, 2026 | — |
| Underground Storage Tank (UST) Compliance Services at Miramar National Cemetery | VETERANS AFFAIRS, DEPARTMENT OF | Award Notice | 541620 | Sep 2, 2026 | — |
| F--MINUTE MAN NHP - PRE-DEMO HAZMAT SURVEY | NATIONAL PARK SERVICE | Combined Synopsis/Solicitation | 541620 | Sep 2, 2026 | Sep 4, 2026 |
| The purpose of this solicitation is to provide sur | BUREAU OF LAND MANAGEMENT | Solicitation | 541620 | Sep 1, 2026 | Sep 16, 2026(11d) |
| St. Louis District Environmental Consulting Services | DEPT OF THE ARMY | Presolicitation | 541620 | Sep 1, 2026 | — |
| Air Emissions Inventory & Compliance Assessment | VETERANS AFFAIRS, DEPARTMENT OF | Presolicitation | 541620 | Sep 1, 2026 | Sep 11, 2026(6d) |
| B--BLM KFO VEGETATION MGMT PLAN | BUREAU OF LAND MANAGEMENT | Award Notice | 541620 | Sep 1, 2026 | — |
| R--OH - OH ESFO - Conservation Framework for Listed S | US FISH AND WILDLIFE SERVICE | Award Notice | 541620 | Sep 1, 2026 | — |
| Pine Ridge Environmental Assessment for Great Plai | BUREAU OF INDIAN AFFAIRS | Combined Synopsis/Solicitation | 541620 | Sep 1, 2026 | Sep 11, 2026(6d) |
Largest contracts ending within 18 months
- 89233121FNA400380 ↗$46.5M
U.S. DEPARTMENT OF ENERGY/NATIONAL NUCLEAR SECURITY ADMINISTRATION (DOE/NNSA)OFFICE OF COUNTERTERRORISM AND COUNTER-PROLIFERATION (NA-80) TECHNICAL SUPPORT SERVICES
- Ends
- Dec 30, 2026
- Started
- Jun 30, 2021
- Agency
- Department Of Energy
- NAICS
- 541620
- 1305M224F0196 ↗$40.2M
NWS/NDBC: TECHNICAL SUPPORT SERVICES
- Ends
- Jun 29, 2027
- Started
- Jun 30, 2024
- Agency
- National Oceanic And Atmospheric Administration
- NAICS
- 541620
- 68HERC24F0515 ↗$36.2M
R499- TACKLING EMERGING CONTAMINANTS (TEC) WATER TECHNICAL ASSISTANCE (WATERTA)
- Ends
- Sep 17, 2027
- Started
- Sep 18, 2024
- Agency
- Environmental Protection Agency
- NAICS
- 541620
- 68HERC24F0156 ↗$22.9M
CLOSING AMERICAS WASTEWATER ACCESS GAP COMMUNITY PROGRAM SUPPORT
- Ends
- Feb 14, 2027
- Started
- Mar 3, 2024
- Agency
- Environmental Protection Agency
- NAICS
- 541620
- 70B01C26F00000059 ↗$19.1M
CONSTRUCTION MONITORING SERVICES FOR TCA-2 BORDER BARRIER CONSTRUCTION.
- Ends
- Jan 29, 2028
- Started
- Feb 11, 2026
- Agency
- U.S. Customs And Border Protection
- NAICS
- 541620
- 68HERC26F0013 ↗$18.5M
R499 SUPPORT FOR LEAD SERVICE LINE INVENTORIES AND REPLACEMENT - GET THE LEAD OUT (GLO) INITIATIVE
- Ends
- Nov 3, 2026
- Started
- Nov 3, 2025
- Agency
- Environmental Protection Agency
- NAICS
- 541620
- 68HERC24F0211 ↗$18.1M
F115- SUPPORT FOR 2023 WATER TECHNICAL ASSISTANCE ENGINEERING SUPPORT SERVICES FOR OFFICE OF WASTERWATER MANAGEMENT (OWM)
- Ends
- Feb 26, 2027
- Started
- Feb 27, 2024
- Agency
- Environmental Protection Agency
- NAICS
- 541620
- 1305M221FNCNP0096 ↗$14.6M
1305M419DNCNA0018/1305M221FNCNP0096, NOS/OCM TECHNICAL SUPPORT SERVICES (TSS)
- Ends
- Sep 29, 2026
- Started
- Sep 30, 2021
- Agency
- National Oceanic And Atmospheric Administration
- NAICS
- 541620
- 68HERH25F0091 ↗$12.6M
COMPETITIVE EARTH T&M/FFP HYBRID CALL ORDER FOR ORD ENTITLED BIL DRINKING WATER LEAD TECHNICAL SUPPORT. PERIOD OF PERFORMANCE MAY 5, 2025, TO MAY 4, 2026.
- Ends
- May 3, 2027
- Started
- May 4, 2025
- Agency
- Environmental Protection Agency
- NAICS
- 541620
- 89243322FAU400003 ↗$11.4M
THE PURPOSE OF THIS MODIFICATION IS TO DEOBLIGATE FUNDING FROM ONE CLIN AND REOBLIGATING TO ANOTHER CLIN.
- Ends
- Mar 30, 2027
- Started
- Feb 28, 2022
- Agency
- Department Of Energy
- NAICS
- 541620
| PIID | Contractor | Description | Agency | NAICS | Obligated | Start | End |
|---|---|---|---|---|---|---|---|
| 89233121FNA400380 ↗ | Project Enhancement Corporation | U.S. DEPARTMENT OF ENERGY/NATIONAL NUCLEAR SECURITY ADMINISTRATION (DOE/NNSA)OFFICE OF COUNTERTERRORISM AND COUNTER-PROLIFERATION (NA-80) TECHNICAL SUPPORT SERVICES | Department Of Energy | 541620 | $46.5M | Jun 30, 2021 | Dec 30, 2026 |
| 1305M224F0196 ↗ | Lynker Corporation | NWS/NDBC: TECHNICAL SUPPORT SERVICES | National Oceanic And Atmospheric Administration | 541620 | $40.2M | Jun 30, 2024 | Jun 29, 2027 |
| 68HERC24F0515 ↗ | S C & A INC | R499- TACKLING EMERGING CONTAMINANTS (TEC) WATER TECHNICAL ASSISTANCE (WATERTA) | Environmental Protection Agency | 541620 | $36.2M | Sep 18, 2024 | Sep 17, 2027 |
| 68HERC24F0156 ↗ | Eastern Research Group INC | CLOSING AMERICAS WASTEWATER ACCESS GAP COMMUNITY PROGRAM SUPPORT | Environmental Protection Agency | 541620 | $22.9M | Mar 3, 2024 | Feb 14, 2027 |
| 70B01C26F00000059 ↗ | Vernadero Group INC | CONSTRUCTION MONITORING SERVICES FOR TCA-2 BORDER BARRIER CONSTRUCTION. | U.S. Customs And Border Protection | 541620 | $19.1M | Feb 11, 2026 | Jan 29, 2028 |
| 68HERC26F0013 ↗ | General Dynamics Information Technology, INC. | R499 SUPPORT FOR LEAD SERVICE LINE INVENTORIES AND REPLACEMENT - GET THE LEAD OUT (GLO) INITIATIVE | Environmental Protection Agency | 541620 | $18.5M | Nov 3, 2025 | Nov 3, 2026 |
| 68HERC24F0211 ↗ | Eastern Research Group INC | F115- SUPPORT FOR 2023 WATER TECHNICAL ASSISTANCE ENGINEERING SUPPORT SERVICES FOR OFFICE OF WASTERWATER MANAGEMENT (OWM) | Environmental Protection Agency | 541620 | $18.1M | Feb 27, 2024 | Feb 26, 2027 |
| 1305M221FNCNP0096 ↗ | Lynker Corporation | 1305M419DNCNA0018/1305M221FNCNP0096, NOS/OCM TECHNICAL SUPPORT SERVICES (TSS) | National Oceanic And Atmospheric Administration | 541620 | $14.6M | Sep 30, 2021 | Sep 29, 2026 |
| 68HERH25F0091 ↗ | S C & A INC | COMPETITIVE EARTH T&M/FFP HYBRID CALL ORDER FOR ORD ENTITLED BIL DRINKING WATER LEAD TECHNICAL SUPPORT. PERIOD OF PERFORMANCE MAY 5, 2025, TO MAY 4, 2026. | Environmental Protection Agency | 541620 | $12.6M | May 4, 2025 | May 3, 2027 |
| 89243322FAU400003 ↗ | Project Enhancement Corporation | THE PURPOSE OF THIS MODIFICATION IS TO DEOBLIGATE FUNDING FROM ONE CLIN AND REOBLIGATING TO ANOTHER CLIN. | Department Of Energy | 541620 | $11.4M | Feb 28, 2022 | Mar 30, 2027 |