Federal Contracts in NAICS 541620 (Environmental Consulting Services)

1,136 total opportunities indexed 306 award notices 830 open / pre-award

What is NAICS 541620?

Providing advice and assistance to businesses and other organizations on environmental issues, such as the control of environmental contamination from pollutants, the restoration of contaminated land and water, and regulatory compliance. EPA Superfund site assessments, NEPA compliance support for federal construction, and USACE Section 404/401 wetlands permitting are three high-volume federal use cases. DOI BLM and USFWS also buy extensively for public-lands stewardship.

SBA small-business size standard: $19.0M average annual receipts

Top Awardees in NAICS 541620

Vendor	Awards	Total Value
MABBETT & ASSOCIATES, INC. CAGE 361J7	5	$603.0M
HISTORICAL RESEARCH ASSOCIATES, INC. CAGE 0KCU2	4	$50.5M
WOODS CANYON ARCHAEOLOGICAL CONSULTANTS, INC. CAGE 3GXZ1	3	$546K
SWCA, INCORPORATED CAGE 0WHS6	3	$1.7M
FE-CT JV, LLC CAGE 01U70	3	$900.0M
Pinyon-Sundance JV, LLC CAGE 05R93	3	$54.1M
STELL SIA SALAS O'BRIEN LLC CAGE 97R33	3	$900.0M
C.J. SETO SUPPORT SERVICES, LLC CAGE 1NAP7	3	$900.0M
LRS FEDERAL LLC CAGE 4B5X4	3	$900.0M
LEGEND TECHNICAL SERVICES, INC. CAGE 02YL3	2	$16K
STELL ENVIRONMENTAL ENTERPRISES INC CAGE 3S0T3	2	$63K
WHITE BUFFALO, INC. CAGE 4CX75	2	$13K
ALLRED RESTORATION, INC. CAGE 30HH7	2	$810K
Colorado State University CAGE 4B575	2	$516K
ENVIRONMENTAL DATA SERVICES, LIMITED CAGE 07LL5	2	$19K
WESTON SOLUTIONS INC CAGE 2M222	2	$154.4M
AFS-IEI JV, LLC CAGE 15U38	2	$8.0M
BIO-WEST INC CAGE 0K4M3	2	$51.0M
MARSTEL-DAY, LLC CAGE 1WA73	2	$477K
ZIMMETRY ENVIRONMENTAL MANAGEMENT, CORP CAGE 3GXC4	2	$8.0M

Award Trends (2024-2026)

Year	Awards	Total Obligated
2026	220	$767.2M
2025	62	$5.3B
2024	24	$148.4M

Top Buying Agencies

Agency	Solicitations
INTERIOR, DEPARTMENT OF THE	349
DEPT OF DEFENSE	238
VETERANS AFFAIRS, DEPARTMENT OF	139
AGRICULTURE, DEPARTMENT OF	131
ENVIRONMENTAL PROTECTION AGENCY	81
GENERAL SERVICES ADMINISTRATION	66
COMMERCE, DEPARTMENT OF	27
TRANSPORTATION, DEPARTMENT OF	26
ENERGY, DEPARTMENT OF	21
HEALTH AND HUMAN SERVICES, DEPARTMENT OF	19

Set-Aside Breakdown

Set-Aside Type	Opportunities
Open / Full and Open	526
SBA	405
NONE	70
SDVOSBC	59
8A	31
ISBEE	16
8AN	9
SBP	8
WOSB	6
VSA	3
WOSBSS	2
IEE	1

Active Opportunities

Title	Agency	Deadline
Sources Sought - SLDA NCSO	DEPT OF DEFENSE	2026-10-09T17:00:00+00:00
H346--Legionella Water Testing	VETERANS AFFAIRS, DEPARTMENT OF	2026-10-13T17:00:00+00:00
AREMP AND WATER SAMPLE ANALYSIS	INTERIOR, DEPARTMENT OF THE	2026-10-15T21:00:00+00:00
F--SDREP Environmental Compliance Support	INTERIOR, DEPARTMENT OF THE	2026-10-06T00:00:00+00:00
R--R10 START VI: Superfund Technical Assessment & Response Team (START) VI	ENVIRONMENTAL PROTECTION AGENCY	2026-10-06T16:00:00+00:00
St. Louis District Environmental Consulting Services	DEPT OF DEFENSE	-
B--MRG RGSM SPAWNING AND EGG MONITORING	INTERIOR, DEPARTMENT OF THE	-
Former General Leonard Wood Army Community Hospital (FGLWACH) Pre-Demolition Environmental Survey	DEPT OF DEFENSE	-
R--CASTNET VII	ENVIRONMENTAL PROTECTION AGENCY	-
CONSOLIDATION DETERMINATION: FFEO Compliance Support Services	ENVIRONMENTAL PROTECTION AGENCY	-

How to Bid Federal Contracts in NAICS 541620

EPA Regional Advisory Contracts (RAC) and Environmental Services Acquisition Team (ESAT) IDIQs are the flagship vehicles. USACE CEMRD and CENWD have large environmental A-E IDIQs. Small-business set-asides are the norm — the sector is dominated by HUBZone-located environmental firms in rural contaminated areas. NEPA expertise + state-specific natural-resources licenses are key differentiators.

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