NAICS 541620

Environmental Consulting Services — Government Contracts

Environmental Consulting Services (NAICS 541620) covers firms providing advice on environmental remediation, compliance, and assessment. With EPA, DOD, and DOE facing massive cleanup obligations at hundreds of sites, this NAICS code sees consistent demand.

19

Active

10

Closing this week

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Pipeline value

5

States

Top states for NAICS 541620

North Carolina (2)New Mexico (1)Arizona (1)California (1)Illinois (1)

Active Opportunities

Fire Ecology Research

OFFICE OF ACQUISITON GRANTS

SAM

2d left

Expanding Grazing Data Collection (Terrestrial ONL

OREGON STATE OFFICE

SAM

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R428--Indoor Air Quality Testing

246-NETWORK CONTRACTING OFFICE 6 (36C246)

SAM

3d left

R428--Indoor Air Quality Testing

246-NETWORK CONTRACTING OFFICE 6 (36C246)

SAMAsheville, North Carolina

3d left

R428--Indoor Air Quality Testing

246-NETWORK CONTRACTING OFFICE 6 (36C246)

SAMAsheville, North Carolina

3d left

Expanding Grazing Data Collection (Terrestrial ONL

OREGON STATE OFFICE

SAM

3d left

BPA Call Order against The Land Management Integrated Resources BPA (LMIR) - Carson NF Post-fire Recovery Project Manager

USDA-FS, STEWARDSHIP CONTRACTING BRANCH

SAMPenasco, New Mexico

4d left

Spence Basin Heritage Survey Prescott National Forest

USDA-FS, CSA SOUTHWEST 5

SAMPrescott, Arizona

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F--CGB 400 - SJR Salinity Forecast by WARMF PTMS

MP-REGIONAL OFFICE

SAMSacramento, California

5d left

Scott AFB Stage 1 VBS -2026

FA4407 375 CONS LGC

SAMScott Air Force Base, Illinois

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How to Win NAICS 541620 Contracts

Federal agencies classify solicitations using NAICS codes to identify the type of work or product being procured. NAICS 541620 (Environmental Consulting Services) must be listed on your SAM.gov registration to appear in searches and receive notifications for matching opportunities.

Each NAICS code has a small business size standard, which determines whether your firm qualifies as "small" for set-aside competitions. Check the SBA's size standards table for NAICS 541620 — the threshold may be based on annual revenue or number of employees.

Many Environmental Consulting Services contracts are awarded through multi-award indefinite delivery/indefinite quantity (IDIQ) vehicles. Winning a spot on an IDIQ allows you to compete for task orders over 5–10 years, providing a predictable pipeline of work.

Past performance is critical for NAICS 541620 opportunities. Start with smaller contracts (micro-purchases under $10,000 or simplified acquisitions under $250,000) to build your track record, then pursue larger opportunities as your CPARS ratings improve.

Frequently Asked Questions

What is NAICS code 541620?
NAICS 541620 stands for "Environmental Consulting Services" under the North American Industry Classification System. It is used by federal agencies to classify the type of work being solicited. Businesses must have this code on their SAM.gov registration to be eligible for contracts classified under NAICS 541620.
How do I find NAICS 541620 contracts?
All federal contracts under NAICS 541620 are posted on SAM.gov (formerly FBO.gov). You can search by NAICS code, or use GovMatch to automatically receive daily matches for Environmental Consulting Services opportunities based on your business profile.
What is the small business size standard for NAICS 541620?
The SBA sets a size standard for each NAICS code that determines small business eligibility. For NAICS 541620, check the current size standards on the SBA website — standards are updated periodically and may be based on average annual receipts or number of employees.
Can I add NAICS 541620 to my SAM.gov registration?
Yes. You can add multiple NAICS codes to your SAM.gov Entity Registration. Adding NAICS 541620 ensures your business appears in agency market research and receives relevant solicitation notifications. There is no limit to the number of NAICS codes you can list.
What certifications help win NAICS 541620 contracts?
Useful certifications vary by industry. Common ones for Environmental Consulting Services include SBA 8(a) (disadvantaged businesses), HUBZone, SDVOSB, and WOSB. Industry-specific certifications (ISO 9001, CMMI, FedRAMP, etc.) can also strengthen your proposals and differentiate your firm.

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