Top 87 Contractors in PSC B503: Archeological/Paleontological Studies, Jul 2025–Jun 2026
Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe
The top 10 won 56% of PSC B503 contract dollars from July 2025 through June 2026
Ranking facts
- Contract obligations
- $32,974,959 Net of deobligations, by contracts coded PSC B503
- Contractors
- 90 Parent companies with an obligation
- Largest contractor
- New South Associates, Inc. $9.19 million, 25.9% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 87 rows as CSV
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 |
New South Associates, Inc.
Top agencies
|
$9,188,907 | ||
| 2 | $2,366,607 | |||
| 3 |
Statistical Research Inc.
|
$2,343,060 | ||
| 4 | $1,505,163 | |||
| 5 |
Egc, Inc.
Top agencies
|
$1,166,409 | ||
| 6 | $749,929 | |||
| 7 |
Espinoza Cultural Services LLC
|
$742,139 | ||
| 8 |
Southeastern Archaeological Research Inc.
Top agencies
|
$683,230 | ||
| 9 |
Environmental Research Group LLC
|
$669,999 | ||
| 10 |
Applied Earthworks, Inc.
Top agencies
|
$582,109 | ||
| 11 | $563,622 | |||
| 12 |
Dawson Mcg, Inc.
Top agencies
|
$552,256 | ||
| 13 |
Stantec Inc.
Top agencies
|
$550,979 | ||
| 14 | $544,060 | |||
| 15 |
Pax Environmental, LLC
Top agencies
|
$542,080 | ||
| 16 | $504,914 | |||
| 17 | $502,123 | |||
| 18 | $490,197 | |||
| 19 |
The Rand Corporation
Top agencies
|
$450,000 | ||
| 20 | $425,987 | |||
| 21 |
Erg-Terracon JV, L.L.C.
Top agencies
|
$386,479 | ||
| 22 | $363,178 | |||
| 23 | $360,216 | |||
| 24 | $340,379 | |||
| 25 |
Paleowest LLC
Top agencies
|
$337,052 | ||
| 26 |
DDC 4C, LLC
Top agencies
|
$320,377 | ||
| 27 | $298,398 | |||
| 28 | $275,744 | |||
| 29 |
ASM Affiliates Inc.
Top agencies
|
$271,846 | ||
| 30 |
NEZ Perce Tribe
Top agencies
|
$261,175 | ||
| 31 | $239,905 | |||
| 32 | $237,816 | |||
| 33 | $235,830 | |||
| 34 | $233,263 | |||
| 35 |
G2 Archaeology
Top agencies
|
$215,193 | ||
| 36 | $203,833 | |||
| 37 | $179,163 | |||
| 38 | $174,320 | |||
| 39 | $163,549 | |||
| 40 | $150,000 | |||
| 41 | $143,950 | |||
| 42 | $143,367 | |||
| 43 | $138,998 | |||
| 44 |
Coastal Environments, Inc.
Top agencies
|
$128,308 | ||
| 45 |
Washington State University
Top agencies
|
$125,959 | ||
| 46 | $125,937 | |||
| 47 |
Pinnacle Archaeology LLC
Top agencies
|
$114,286 | ||
| 48 |
University of Washington
Top agencies
|
$113,994 | ||
| 49 |
Xentity Corporation
Top agencies
|
$109,723 | ||
| 50 |
GCM Services, Inc.
Top agencies
|
$107,900 | ||
| 51 | $100,211 | |||
| 52 | $96,393 | |||
| 53 |
State of Illinois
Top agencies
|
$89,349 | ||
| 54 |
Ethnoscience Inc.
Top agencies
|
$89,069 | ||
| 55 |
Swca Incorporated
Top agencies
|
$85,818 | ||
| 56 | $84,265 | |||
| 57 | $82,179 | |||
| 58 |
Pinyon-Sundance JV, LLC
Top agencies
|
$77,304 | ||
| 59 | $74,620 | |||
| 60 | $63,830 | |||
| 61 |
Logan Simpson Design Inc.
Top agencies
|
$63,323 | ||
| 62 |
Adanta Inc.
Top agencies
|
$56,189 | ||
| 63 |
Edward Otter, Inc.
Top agencies
|
$52,500 | ||
| 64 | $52,328 | |||
| 65 | $49,971 | |||
| 66 |
Confederated Salish & Kootenai Tribes Inc
Top agencies
|
$49,807 | ||
| 67 |
Judy Cooper
Top agencies
|
$48,504 | ||
| 68 |
Xleagle LLC
Top agencies
|
$48,413 | ||
| 69 | $46,500 | |||
| 70 |
Pinyon Environmental Inc.
Top agencies
|
$44,084 | ||
| 71 | $38,017 | |||
| 72 | $38,000 | |||
| 73 | $36,000 | |||
| 74 | $33,055 | |||
| 75 | $28,665 | |||
| 76 |
Erg-Terracon Jv2, L.L.C.
Top agencies
|
$28,393 | ||
| 77 |
Western Cultural Inc.
Top agencies
|
$25,000 | ||
| 78 | $20,851 | |||
| 79 | $20,348 | |||
| 80 | $20,000 | |||
| 81 |
ACR Consultants, Inc.
Top agencies
|
$17,955 | ||
| 82 |
Desert Archaeology, Inc.
Top agencies
|
$13,588 | ||
| 83 | $12,682 | |||
| 84 | $7,054 | |||
| 85 |
Marstel-Day, LLC
Top agencies
|
$4,633 | ||
| 86 | $3,348 | |||
| 87 | $1,180 |
Show 62 more
87 of 90 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 $35.5 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. 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 Jul 2024–Jun 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 B503 contractors in Jul 2025–Jun 2026?
1. New South Associates, Inc. ($9.19M), 2. Environmental Assessment Services, LLC ($2.37M), 3. Statistical Research Inc. ($2.34M), 4. Brockington and Associates, Inc. ($1.51M), 5. Egc, Inc. ($1.17M), 6. R. Christopher Goodwin & Associates, Inc. ($750K), 7. Espinoza Cultural Services LLC ($742K), 8. Southeastern Archaeological Research Inc. ($683K), 9. Environmental Research Group LLC ($670K), 10. Applied Earthworks, Inc. ($582K).
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