Defense Environmental and Restoration Program
DoD acquisition program
Program facts
- Program number
- ZDE
- Short name
- DERP
- Program type
- Other
- Lead component
-
Department of Defense
- Contract awards
- 5,551
- Contract obligations
- $4,968,378,418 Since fiscal year 1997
- More information
Program details come from the Department of Defense's acquisition program list. Contract figures come from SAM.gov (formerly FPDS).
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2026 | $50,580,875 |
| FY2025 | $67,543,314 |
| FY2024 | $109,625,994 |
| FY2023 | $109,120,016 |
| FY2022 | $146,551,767 |
| FY2021 | $171,278,651 |
| FY2020 | $135,936,579 |
| FY2019 | $206,322,770 |
| FY2018 | $142,808,035 |
| FY2017 | $163,668,742 |
Top contractors by obligations
| Rank | Contractor | Obligated | Share |
|---|---|---|---|
| 1 | AECOM Technical Services, Inc. | $474,853,730 | |
| 2 | Environmental Chemical Corporation | $189,437,958 | |
| 3 | Arcadis U.s., Inc. | $182,421,207 | |
| 4 | Jacobs Engineering Group Inc. | $178,910,824 | |
| 5 | EA Engineering, Science, And Technology, Inc., PBC | $178,316,892 | |
| 6 | Ch2M Hill Constructors, Inc. | $125,581,213 | |
| 7 | The Source Group, Inc. | $105,703,340 | |
| 8 | Hydrogeologic, Inc. | $103,645,790 | |
| 9 | Ch2M Hill, Inc. | $102,757,199 | |
| 10 | Versar, Inc. | $89,770,355 |
10 of 821 contractors listed here. See the rest on GovTribe.
Contract awards
Show 40 more
Latest 50 of 5,551 listed here. See the rest on GovTribe.
About this program
The Defense Environmental and Restoration Program (DERP) is a Department of Defense initiative that began in 1975 with the Installation Restoration Program (IRP) to address contamination from hazardous substances, pollutants, and contaminants at active military installations, Formerly Used Defense Sites (FUDS), and Base Realignment and Closure (BRAC) locations across the United States. In 2001, the program expanded to include the Military Munitions Response Program (MMRP), which addresses sites containing unexploded ordnance, discarded military munitions, and munitions constituents. The program operates under the federal Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), also known as Superfund.
Contract awards under DERP typically range from $50,000 to $30 million, with performance periods spanning 1-5 years. Primary services include environmental site assessments, remedial investigations, feasibility studies, and long-term monitoring of contaminated sites, with a particular focus on per- and polyfluoroalkyl substances (PFAS) contamination and unexploded ordnance removal. Major prime contractors include AECOM Technical Services, Inc., Cape-Weston JV3 LLC, and Trevet-Noreas JV LLC, with frequent subcontracting for specialized laboratory and unexploded ordnance services. The Naval Facilities Engineering Command (NAVFAC) and U.S. Army Corps of Engineers are the primary funding agencies, with work predominantly performed at military installations in Hawaii, Guam, and California. While some contracts utilize 8(a) and small business set-asides, the majority are unrestricted awards through various indefinite delivery/indefinite quantity (IDIQ) contract vehicles specific to environmental remediation services.
Quick answers
What is DERP?
Defense Environmental and Restoration Program (DERP) is a DoD acquisition program led by the Department of Defense. DoD lists its program type as Other.
How much has DERP obligated on contracts?
5,551 contract awards are coded to DERP, and their actions have obligated $4,968,378,418 since fiscal year 1997.
Who are the top contractors on DERP?
The contractors obligated the most on DERP contracts are AECOM Technical Services, Inc. ($474,853,730), Environmental Chemical Corporation ($189,437,958) and Arcadis U.s., Inc. ($182,421,207).
How much did DERP obligate in fiscal year 2025?
Contracts coded to DERP obligated $67,543,314 in fiscal year 2025.
What is the latest contract award for DERP?
The latest contract award coded to DERP is W9128F26CA042, awarded to Ahtna-Arcadis 8(A) JV, LLC on July 1, 2026.
On GovTribe
See this program's full record
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