Top DoD remediation services contractors
In the 12 months ending Oct 5, 2026, the Department of Defense obligated $616.0M in net prime contract dollars under NAICS 562910, down 46.3% from $1.1B in the preceding 12 months. 315 prime contractors received positive obligations, and 55 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Defense. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
DoD publishes contract data to USAspending with a 90-day delay, so the most recent months understate DoD activity.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DoD contractors for NAICS 562910
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Sevenson Environmental Services, Inc. | $62.4M | $41.9M | 9.7% | ▲ 2 |
| 2 | Amentum Technology, Inc. | $32.7M | $0 | 5.1% | New |
| 3 | Enviro-FIX Solutions LLC | $28.9M | $0 | 4.5% | New |
| 4 | Brice Engineering, LLC | $27.2M | $27.2M | 4.3% | ▲ 7 |
| 5 | EA Engineering, Science, and Technology, Inc., PBC | $24.6M | $49.8M | 3.8% | ▼ 4 |
| 6 | KFS, LLC | $23.7M | $2.1M | 3.7% | ▲ 91 |
| 7 | Weston Solutions Inc | $22.9M | −$3.9M | 3.6% | New |
| 8 | Eastern Shawnee - Bay West JV, LLC | $21.9M | $14.4M | 3.4% | ▲ 17 |
| 9 | Hydrogeologic, Inc. | $17.0M | $49.6M | 2.6% | ▼ 7 |
| 10 | Environmental Chemical Corporation | $16.1M | $37.8M | 2.5% | ▼ 5 |
| 11 | USA Environmental, Inc. | $12.6M | $23.6M | 2.0% | ▲ 4 |
| 12 | Aptim Federal Services, LLC | $9.9M | $27.9M | 1.6% | ▼ 3 |
| 13 | Lata-CTI Environmental Services LLC | $9.4M | $7.0M | 1.5% | ▲ 32 |
| 14 | HGL-Aptim JV LLC | $8.9M | $25.3M | 1.4% | — |
| 15 | Sevenson-USA Environmental Joint Venture II | $8.9M | $0 | 1.4% | New |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Amentum Technology, Inc.$0 → $32.7M (+$32.7M) · now #2
- Enviro-FIX Solutions LLC$0 → $28.9M (+$28.9M) · now #3
- RSI Remediation, LLC−$26.5M → $1.1M (+$27.6M) · now #99
Largest declines
- Tetra Tech EC Inc$32.0M → −$3.7M (−$35.8M) · no latest-period obligations
- Oneida Environmental, LLC$41.7M → $6.8M (−$34.9M) · now #21
- Hydrogeologic, Inc.$49.6M → $17.0M (−$32.6M) · now #9
New to this market
54 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Amentum Technology, Inc. | Dec 23, 2025 | $32.7M |
| Enviro-FIX Solutions LLC | Jan 8, 2026 | $28.9M |
| Sargent Corporation | May 12, 2026 | $5.4M |
| Orin Technologies, LLC. | Dec 4, 2025 | $4.0M |
| North Wind Portage, Inc. | Feb 13, 2026 | $3.0M |
| BES-Lata JV, LLC | Jun 1, 2026 | $2.3M |
| 3 Arrows Catlin LLC | Feb 16, 2026 | $2.1M |
| Gulf Remediation, Inc | Apr 23, 2026 | $1.9M |
Where the money comes from
Funding sub-agencies within the Department of Defense, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Department of the Army | $442.5M | $803.3M | Down $360.8M (44.9%) |
| Department of the Navy | $88.1M | $137.0M | Down $49.0M (35.7%) |
| Department of the Air Force | $73.6M | $169.4M | Down $95.8M (56.5%) |
| Defense Logistics Agency | $9.7M | $31.7M | Down $22.1M (69.6%) |
| Defense Health Agency | $1.6M | $756K | Up $862K (114.1%) |
| Washington Headquarters Services | $390K | $0 | New |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| N6274224F0133 | Cape-Weston jv3 LLC CTO N6274224F0133 CONFINED DISPOSAL FACILITY CELL DREDGE MATERIAL PROCESSING CELL #2 & CELL #3 JOINT BASE PEARL HARBOR-HICKAM, OAHU HAWAII | $24.5M | Oct 31, 2026 |
| W912DW24C0014 | Sevenson Environmental Services, Inc. REPLACE A FAILING SHEET PILE WALL AT A U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA) SUPERFUND REMEDIAL SITE ON THE NATIONAL PRIORITIES LIST (NPL) LOCATED ON BAINBRIDGE ISLAND,… | $72.1M | Nov 16, 2026 |
| W912BV22C0019 | SES Civil and Environmental LLC PFAS MITIGATION AND MONITORING FORMER REESE AIR FORCE BASE (AFB), LUBBOCK, TX PROJECT NO. UBNY20227242C 8(A) SOLE SOURCE CONTRACT TO SES BASE TASKS ONLY L OPTION 1 AND 2 NOT… | $27.7M | Nov 30, 2026 |
| W912DR20C0031 | Aptim AECOM Decommissioning, LLC DECOMMISSIONING AND DISPOSAL OF THE SM-1 NUCLEAR REACTOR FACILITY, FORT BELVOIR, VIRGINIA | $47.5M | Dec 31, 2026 |
| W912HN25CA016 | Eastern Shawnee - Bay West JV, LLC THIS REQUIREMENT IS FOR FOLLOW-ON ENVIRONMENTAL REMEDIATION ACTIVITIES FOR FORMERLY USED DEFENSE SITE (FUDS) IN BUXTON, NORTH CAROLINA (NC). | $36.3M | Mar 10, 2027 |
| W912BU25F0006 | Sevenson Environmental Services, Inc. SEED TASK ORDER - MOBILIZATION AND REMEDIATION SERVICES AT FORMER DUPONT CHAMBERS WORKS FUSRAP IN DEEPWATER, NJ | $29.5M | May 13, 2027 |
| W9128F22F0300 | Pika International, Inc. IMPLEMENT CMI AT SWMU 4 - SPA | $24.6M | Sep 28, 2027 |
| W911KB23C0005 | Brice Engineering, LLC PFAS SOIL WASHING TREATMENT | $43.2M | Nov 10, 2027 |
| W912P425F0005 | Amentum Technology, Inc. TRENCH EXCAVATION | $32.7M | Nov 30, 2027 |
| W912WJ23F0046 | Sevenson Environmental Services, Inc. REMEDIATION SERVICES FOR FERRY CREEK (OU3) AND ADDITIONAL OU6 PROPERTIES AT RAYMARK SUPERFUND SITE IN STRATFORD, CONNECTICUT | $39.5M | Mar 28, 2028 |
Common questions
Who are the top DoD contractors for NAICS 562910?
In the latest 12 months, Sevenson Environmental Services, Inc. ($62.4M), Amentum Technology, Inc. ($32.7M), Enviro-FIX Solutions LLC ($28.9M) received the most DoD obligations for remediation services.
How concentrated is this market?
The eight largest primes held 38.1% of positive obligations, and Sevenson Environmental Services, Inc. alone held 9.7%. 54 contractors won their first obligations in this market during the latest 12 months.
Are any large DoD NAICS 562910 contracts ending soon?
10 of the largest awards in this market reach their current end date in the next 18 months. The first is N6274224F0133 (Cape-Weston jv3 LLC, $24.5M obligated), ending Oct 31, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 562910 across all agencies
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$173.3MState Department · NAICS 562910
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$17.9MInterior · NAICS 562910
$14.8MVA · NAICS 562910
$14.1MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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