Phase I Environmental Site Assessment at Lower Grey Cloud Slough Islands
Solicitation · Dept of Defense · Responses due Nov 11, 2026
Phase I Environmental Site Assessment at Lower Grey Cloud Slough Islands is a solicitation posted on SAM.gov by Dept of Defense (W07V Endist ST Paul) on Oct 29, 2026, under NAICS 541620 (Environmental Consulting Services). It is set aside: Small Business Set Aside - Total. Responses are due Nov 11, 2026.
- Notice type
- Solicitation
- Agency
- Dept of Defense
- Office
- Dept of the Army / US Army Corps of Engineers / Engineer Division Mississippi Valley / Endist ST Paul / W07V Endist ST Paul
- Solicitation number
- W912ES27QA010
- Industry (NAICS)
- 541620 Environmental Consulting Services
- Set-aside
- Small Business Set Aside - Total
- Place of performance
- Not stated
- Posted
- Oct 29, 2026
- Responses due
- Nov 11, 2026 (10 days left)
The full description, attachments and response instructions are on SAM.gov: read this notice on SAM.gov. To respond you need an active SAM.gov registration, which is free.
What this solicitation means
A solicitation (an RFP, RFQ or IFB) asks businesses to submit bids, quotes or proposals. Your response is an offer the agency can accept and turn into a contract.
- Read the full solicitation and every attachment on SAM.gov, including the scope of work and evaluation criteria.
- Confirm you are eligible: active SAM.gov registration, the NAICS size standard and any set-aside.
- Submit questions to the contracting officer before the question deadline, if there is one.
- Prepare your response exactly as instructed and submit it before the deadline.
Who wins environmental consulting government contracts
Federal agencies obligated $3.7B on contracts under NAICS 541620 from FY2024 to FY2026, including $1.1B in FY2026. The largest contractors in this industry, possible competitors or teaming partners for this bid:
- Eastern Research Group Inc: $219M
- Project Enhancement Corporation: $144M
- The Cadmus Group LLC: $130M
- Weston Solutions Inc: $126M
- Lynker Corporation: $112M
Recent environmental consulting contract awards
| Start date | Recipient | Agency and description | Amount | Record |
|---|---|---|---|---|
| Sep 30, 2026 | Signature Science LLC | Department of Homeland SecurityTHE PURPOSE OF THIS MODIFICATION IS TO EXERCISE OPTION PERIOD FOUR (4). THIS REPLACES CONTRACT NUMBER 70RWMD22F00000035. | $3,283,470 | 70FA9026F00000011 |
| Sep 30, 2026 | Stantec Consulting Services Inc. | Department of Health and Human ServicesOFAAM78 C 6409 - ENVIRONMENTAL FOR CONSTRUCTION EARMARKS | $2,255,815 | 75R60226F34015 |
| Sep 30, 2026 | The Cadmus Group LLC | Department of Health and Human ServicesEXERCISE, EVALUATION AND AFTER-ACTION (E2A2) | $114,434 | 75A50226F62012 |
| Sep 30, 2026 | The Cadmus Group LLC | Department of Health and Human ServicesCORRECTIVE ACTION PROGRAM AND CAP TOOL MANAGEMENT | $156,291 | 75A50226F62011 |
| Sep 30, 2026 | The Cadmus Group LLC | Department of Health and Human ServicesCORRECTIVE ACTION PROGRAM (CAP) | $72,060 | 75A50226F62010 |
More: government environmental consulting contracts · NAICS 541620
DoD contract spending
The Department of Defense obligated $1.3T on contracts from FY2024 to FY2026. Its largest contractors were Lockheed Martin Corporation, Electric Boat Corporation, Lockheed Martin Corporation. What it buys most: aircraft manufacturing, engineering services, research and development in the physical, engineering, and life sciences (except nanotechnology and biotechnology).
See Department of Defense contracts: top contractors, what it buys and recent awards.
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Guides for this bid
Frequently asked questions
- When is the response deadline for W912ES27QA010?
- Responses are due Nov 11, 2026. Always confirm the date and time zone in the notice on SAM.gov, since agencies sometimes extend deadlines with an amendment.
- Who can respond to Phase I Environmental Site Assessment at Lower Grey Cloud Slough Islands?
- This notice is set aside for any business that is small under the SBA size standard for the contract's NAICS code. You also need an active SAM.gov registration, which is free.
- Who usually wins environmental consulting government contracts?
- Under NAICS 541620, the largest federal contractors from FY2024 to FY2026 were Eastern Research Group Inc ($219M), Project Enhancement Corporation ($144M), The Cadmus Group LLC ($130M).
Source: SAM.gov Contract Opportunities, last checked Oct 30, 2026. Independent website. Not affiliated with any government agency.