NAICS 541620: expiring federal contracts in Environmental Consulting Services, California

What NAICS 541620 covers, and the national list →

NAICS 541620, performed in California. 181 prime contracts reach the end of their current period of performance within 365 days, 2 of them within 30. The national list for this code covers every state, and every industry in California is on one page.

Data as of October 21, 2026, from USAspending.

Expiring: 181; within 365 days in California
In the next 30 days: 2; 57 within 90 days
Current holders: 87; across 11 agencies
Obligated to date: $155.2M; median $218.0K

The 10 soonest to end

Ordered by end date. Every identifier links to the award on USAspending.

The 10 contracts under NAICS 541620 in California that end soonest
Current holder	Agency	Ends	Value	Renewal score
AECOM TECHNICAL SERVICES, INC. 1305M326F0064 — open this award on USAspending	Department of Commerce National Oceanic and Atmospheric Administration	Oct 28, 2026	$47,982	10few signals No option periods left (current end date is the potential end date)
AARCHER, INC. 140L0624F0189 — open this award on USAspending	Department of the Interior Bureau of Land Management	Nov 15, 2026	$45,891	10few signals No option periods left (current end date is the potential end date)
GULF SOUTH RESEARCH CORP W9123823F0069 — open this award on USAspending	Department of Defense Department of the Army	Nov 30, 2026	$324,290	45some signals 3 options have been exercised 1 offer received No option periods left (current end date is the potential end date)
WESTON-TECHLAW JV LLC 68HERL26F0009 — open this award on USAspending	Environmental Protection Agency Environmental Protection Agency	Nov 30, 2026	$150,000	10few signals No option periods left (current end date is the potential end date)
TETRA TECH, INC. 89233125FNA000174 — open this award on USAspending	Department of Energy Department of Energy	Dec 3, 2026	$1,091,961	45some signals One option has been exercised 1 offer received No option periods left (current end date is the potential end date)
TERRAPHASE ENGINEERING INC 6991PE21P000011 — open this award on USAspending	Department of Transportation Maritime Administration	Dec 5, 2026	$288,519	60likely recompete 6 options have been exercised 2 offers received Set-aside applies (SMALL BUSINESS SET ASIDE - TOTAL) No option periods left (current end date is the potential end date)
WSP USA ENVIRONMENT & INFRASTRUCTURE INC. 68HERF26F0143 — open this award on USAspending	Environmental Protection Agency Environmental Protection Agency	Dec 15, 2026	$153,273	25some signals 1 offer received No option periods left (current end date is the potential end date)
EAGLE SYNERGISTIC OPTIMIZING TECHNOLOGIES, LLC W912P726CA007 — open this award on USAspending	Department of Defense Department of the Army	Dec 21, 2026	$150,278	30some signals One option has been exercised No option periods left (current end date is the potential end date)
INTEGRAL ECOLOGY RESEARCH CENTER 140L1225P0070 — open this award on USAspending	Department of the Interior Bureau of Land Management	Dec 22, 2026	$149,937	25some signals Limited competition (NOT COMPETED), 1 offer received No option periods left (current end date is the potential end date)
HANA RESOURCES, INC. W912PL19C0039 — open this award on USAspending	Department of Defense Department of the Army	Dec 27, 2026	$6,217,178	25some signals Set-aside applies (SMALL BUSINESS SET ASIDE - TOTAL) No option periods left (current end date is the potential end date)

171 more expiring contracts in this list

This page shows the 10 soonest of 181 contracts under NAICS 541620 in California that end within 365 days. A subscription opens the rest, with filters, renewal scores and a weekly email when something new enters your window.

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Who buys in California

Environmental Protection Agency72 expiring
Department of the Interior34 expiring
Department of Defense33 expiring
Department of Veterans Affairs15 expiring
Department of Energy8 expiring

NAICS 541620 in California: questions vendors ask

How many federal contracts under NAICS 541620 in California are expiring?

181 prime contracts in Environmental Consulting Services (NAICS 541620) in California reach the end of their current period of performance within 12 months: 2 within 30 days and 57 within 90. They are held by 87 different vendors and were bought by 11 agencies. The figures are counted from USAspending, the government’s own record of prime contract awards, and rebuilt nightly.

When does the next NAICS 541620 contract in California end?

The soonest ends on Oct 28, 2026. The table on this page lists the 10 soonest to end, in order, with the incumbent, the awarding agency, the end date and the amount obligated so far. An end date is the date in the award record, not a forecast.

Which agencies buy environmental consulting services in California?

The agencies with the most expiring work here are Environmental Protection Agency (72 contracts), Department of the Interior (34 contracts), Department of Defense (33 contracts). In total 11 agencies have work under Environmental Consulting Services (NAICS 541620) in California ending within 12 months.

Does an expiring contract mean a recompete is coming?

Not on its own. A period of performance that ends is work somebody has to win again, but agencies also extend, consolidate, insource or cancel, and the award record does not say which in advance. Findingbase shows the dates and a renewal score built from five fixed rules, with the reasons each one fired; it does not predict the outcome and does not publish solicitations. The solicitation, when there is one, appears on SAM.gov.

How this page is built

Every contract here comes from USAspending, the federal government’s own record of prime contract awards. A contract appears when its current period of performance ends within 365 days. The table lists the 10 soonest to end — not the largest, and not the highest scoring — so it is a sample of what is really coming rather than a showcase. Award identifiers link back to the source. This page was last rebuilt for Oct 21, 2026.

10 of the 10 contracts in the table above carry a renewal score, and 181 of the 181 in the whole list do. A contract with no score has not been through scoring yet: that is not a low score, it is no score. Scoring works through the soonest expiry dates first.