Top 100 Contractors in PSC AH: Natural Resources and Environment R&D Services, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC AH: Natural Resources and Environment R&D Services, FY2025.
The top 10 won 89% of PSC AH contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $187,890,492 Net of deobligations, by contracts coded PSC AH or a code under it
- Contractors
- 120 Parent companies with an obligation
- Largest contractor
- RTX Corporation $144 million, 75.9% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $143,800,000 | |||
| 2 | $4,433,865 | |||
| 3 | $4,245,334 | |||
| 4 |
M2 Strategy Inc.
Top agencies
|
$3,415,288 | ||
| 5 | $2,999,612 | |||
| 6 |
Credere Associates, LLC
Top agencies
|
$2,281,236 | ||
| 7 |
Stockton Port District
Top agencies
|
$2,114,577 | ||
| 8 | $2,113,237 | |||
| 9 | $1,372,517 | |||
| 10 | $955,920 | |||
| 11 | $893,275 | |||
| 12 | $892,523 | |||
| 13 |
GSI North America Inc.
Top agencies
|
$771,827 | ||
| 14 |
Brown University
Top agencies
|
$697,137 | ||
| 15 | $657,076 | |||
| 16 | $580,743 | |||
| 17 | $541,533 | |||
| 18 |
Jacobs Engineering Group Inc.
Top agencies
|
$535,469 | ||
| 19 |
CDM Smith Inc.
Top agencies
|
$532,698 | ||
| 20 |
Taylor-Woolpert, LLC
Top agencies
|
$522,057 | ||
| 21 | $520,387 | |||
| 22 | $511,773 | |||
| 23 | $499,587 | |||
| 24 | $471,150 | |||
| 25 |
Sapere Consulting Inc.
Top agencies
|
$442,900 | ||
| 26 |
Aquatonomy, Inc.
Top agencies
|
$400,000 | ||
| 27 | $377,392 | |||
| 28 | $360,953 | |||
| 29 |
Arizona State University
Top agencies
|
$340,932 | ||
| 30 | $340,245 | |||
| 31 | $320,502 | |||
| 32 | $319,923 | |||
| 33 | $300,000 | |||
| 34 | $272,676 | |||
| 35 | $272,295 | |||
| 36 | $264,011 | |||
| 37 |
Cornerturn LLC
Top agencies
|
$263,419 | ||
| 38 |
Water Institute of the Gulf
Top agencies
|
$248,003 | ||
| 39 |
Creare LLC
Top agencies
|
$247,449 | ||
| 40 |
Arizona Board of Regents
Top agencies
|
$230,000 | ||
| 41 |
Aquatechnex LLC
Top agencies
|
$227,910 | ||
| 42 |
Tetra Tech, Inc.
Top agencies
|
$210,099 | ||
| 43 | $201,952 | |||
| 44 |
Onterris, Inc.
Top agencies
|
$200,000 | ||
| 45 | $200,000 | |||
| 46 |
Clarkson University
Top agencies
|
$195,562 | ||
| 47 | $195,478 | |||
| 48 |
Azura Consulting LLC
Top agencies
|
$194,571 | ||
| 49 |
Oregon State University
Top agencies
|
$188,679 | ||
| 50 | $187,014 | |||
| 51 |
Trustees of Dartmouth College
Top agencies
|
$186,049 | ||
| 52 |
University of Hawaii
Top agencies
|
$185,881 | ||
| 53 | $185,684 | |||
| 54 |
University of Florida
Top agencies
|
$184,330 | ||
| 55 | $183,645 | |||
| 56 |
University of Utah
Top agencies
|
$178,283 | ||
| 57 |
University of Washington
Top agencies
|
$176,613 | ||
| 58 | $175,043 | |||
| 59 | $174,585 | |||
| 60 |
Smru, LLC
Top agencies
|
$173,582 | ||
| 61 |
Syracuse University
Top agencies
|
$151,513 | ||
| 62 | $150,000 | |||
| 63 | $143,366 | |||
| 64 |
University of Miami
Top agencies
|
$140,400 | ||
| 65 | $133,406 | |||
| 66 | $132,000 | |||
| 67 |
Northern Arizona University
Top agencies
|
$130,000 | ||
| 68 | $126,137 | |||
| 69 |
Zara Environmental LLC
Top agencies
|
$123,298 | ||
| 70 |
Desert Star Systems LLC
Top agencies
|
$117,188 | ||
| 71 | $115,000 | |||
| 72 | $112,364 | |||
| 73 | $105,845 | |||
| 74 | $105,123 | |||
| 75 |
University of Texas System
Top agencies
|
$101,374 | ||
| 76 | $97,785 | |||
| 77 | $94,589 | |||
| 78 |
RB Becken, Inc.
Top agencies
|
$92,969 | ||
| 79 | $92,804 | |||
| 80 | $88,081 | |||
| 81 | $87,367 | |||
| 82 | $86,705 | |||
| 83 |
Aron Roland
Top agencies
|
$82,500 | ||
| 84 |
Bizsolutions 360 Inc.
Top agencies
|
$76,000 | ||
| 85 | $74,200 | |||
| 86 | $73,116 | |||
| 87 |
Purdue University
Top agencies
|
$68,444 | ||
| 88 |
Applied Ocean Sciences, LLC
Top agencies
|
$67,261 | ||
| 89 |
Southall Environmental Associates Inc.
Top agencies
|
$66,832 | ||
| 90 |
Nalas Engineering Services Inc
Top agencies
|
$60,072 | ||
| 91 |
University of Tennessee
Top agencies
|
$60,000 | ||
| 92 | $59,997 | |||
| 93 |
Fredericktowne Labs Inc.
Top agencies
|
$56,224 | ||
| 94 |
Greenwood Enterprises, LLC
Top agencies
|
$49,742 | ||
| 95 |
Molekule Group, Inc.
Top agencies
|
$48,088 | ||
| 96 | $42,260 | |||
| 97 |
Alaska Biomap, Inc.
Top agencies
|
$41,008 | ||
| 98 |
Ta Instruments - Waters L.L.C.
Top agencies
|
$40,020 | ||
| 99 |
Midwest Natural Resources Inc.
Top agencies
|
$35,419 | ||
| 100 | $35,232 |
Show 75 more
100 of 120 contractors listed here. See the rest on GovTribe.
How this ranking works
- Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
- Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $189 million obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
- Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
- Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.
Quick answers
Who were the top 10 PSC AH contractors in Aug 2025–Jul 2026?
1. RTX Corporation ($144M), 2. University Corporation for Atmospheric Research ($4.43M), 3. University of Wisconsin System ($4.25M), 4. M2 Strategy Inc. ($3.42M), 5. Nevada System of Higher Education Board of Regents ($3M), 6. Credere Associates, LLC ($2.28M), 7. Stockton Port District ($2.11M), 8. Specpro Sustainment and Environmental, LLC ($2.11M), 9. S.l. Ross Environmental Research Limited ($1.37M), 10. Applied Research Associates, Inc. ($956K).
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