Top DOJ environmental consulting services contractors
In the 12 months ending Oct 5, 2026, the Department of Justice obligated $7.6M in net prime contract dollars under NAICS 541620, up 45.5% from $5.2M in the preceding 12 months. 17 prime contractors received positive obligations, and 3 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Justice. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DOJ contractors for NAICS 541620
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 | Melwood Horticultural Training Center, Inc. | $3.4M | $3.3M | 43.3% | — |
| 2 | Solv LLC | $1.7M | $754K | 22.3% | ▲ 1 |
| 3 | Clark Group, LLC, the | $1.6M | $1.9M | 20.3% | ▼ 1 |
| 4 | hazard3 LLC | $279K | $491K | 3.6% | — |
| 5 | All Environmental Compliance Inc. | $206K | $160K | 2.6% | — |
| 6 | Atmos Solutions Inc | $173K | $102K | 2.2% | ▲ 1 |
| 7 | University of Texas at Arlington | $94K | $0 | 1.2% | New |
| 8 | Kuntz Environmental Services LLC | $89K | $0 | 1.1% | New |
| 9 | Aarcher, Inc. | $87K | −$94K | 1.1% | New |
| 10 | Amtivo (USA) Inc. | $56K | $0 | 0.7% | New |
| 11 | Forensic Environmental Services Inc | $45K | −$47K | 0.6% | New |
| 12 | Miscellaneous Foreign Awardees | $24K | $0 | 0.3% | New |
| 13 | Building Diagnostics and Property Science, LLC | $14K | $0 | 0.2% | New |
| 14 | Applied Water Technology, Inc. | $11K | $4K | 0.1% | ▲ 5 |
| 15 | Sierra Piedmont, Inc | $6K | $5K | 0.1% | ▲ 2 |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Solv LLC$754K → $1.7M (+$984K) · now #2
- Johnson Thomas−$412K → $0 (+$412K) · no latest-period obligations
- Aarcher, Inc.−$94K → $87K (+$181K) · now #9
Largest declines
- Clark Group, LLC, the$1.9M → $1.6M (−$346K) · now #3
- hazard3 LLC$491K → $279K (−$211K) · now #4
- LRS Federal LLC$150K → $0 (−$150K) · no latest-period obligations
New to this market
5 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| University of Texas at Arlington | Aug 4, 2026 | $94K |
| Kuntz Environmental Services LLC | Mar 10, 2026 | $89K |
| Amtivo (USA) Inc. | Feb 19, 2026 | $56K |
| Miscellaneous Foreign Awardees | Jun 3, 2026 | $24K |
| Timmons Group Inc | Jul 31, 2026 | $4K |
Where the money comes from
Funding sub-agencies within the Department of Justice, 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 |
|---|---|---|---|
| Offices, Boards and Divisions | $3.4M | $2.0M | Up $1.5M (72.9%) |
| Federal Bureau of Investigation | $1.7M | $754K | Up $984K (130.5%) |
| Office of Justice Programs | $1.6M | $1.9M | Down $346K (17.9%) |
| Drug Enforcement Administration | $279K | $492K | Down $212K (43.2%) |
| Federal Prison System / Bureau of Prisons | $274K | −$41K | Up $315K (763.6%) |
| Federal Prison Industries / Unicor | $262K | $229K | Up $33K (14.3%) |
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 |
|---|---|---|---|
| 15PBJA23F00000002 | Clark Group, LLC, the NEPA SUPPORT SERVICES | $4.0M | May 23, 2027 |
| 15F06726F0001104 | Solv LLC OCCUPATIONAL SAFETY AND INDUSTRIAL HYGIENE AND ENVIRONMENTAL SERVICES | $1.7M | Sep 15, 2027 |
| 15JPSS23C00000081 | Melwood Horticultural Training Center, Inc. ROBERT F KENNEDY BUILDING CUSTODIAL SERVICES | $10.8M | Sep 30, 2027 |
Common questions
Who are the top DOJ contractors for NAICS 541620?
In the latest 12 months, Melwood Horticultural Training Center, Inc. ($3.4M), Solv LLC ($1.7M), Clark Group, LLC, the ($1.6M) received the most DOJ obligations for environmental consulting services.
How concentrated is this market?
The eight largest primes held 96.8% of positive obligations, and Melwood Horticultural Training Center, Inc. alone held 43.3%. 5 contractors won their first obligations in this market during the latest 12 months.
Are any large DOJ NAICS 541620 contracts ending soon?
3 of the largest awards in this market reach their current end date in the next 18 months. The first is 15PBJA23F00000002 (Clark Group, LLC, the, $4.0M obligated), ending May 23, 2027. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
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$24.7MFigures 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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