Company lists · Data refreshed September 2026

Top 25 Environmental engineering firms based in Irvine, United States

Name: Environmental engineering firms based in Irvine, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 35 companies tracked

RevenueBase identified 35 company matches for environmental engineering firms associated with Irvine, United States as of September 2026 and tracks 2,121 professional contacts across them, including 873 with verified work emails. Across the United States, Houston is the largest hub for this category (138 companies); Irvine has 35.

This list covers company matches for environmental engineering firms associated with Irvine, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 16, 2026 How this list was built

35Companies

2,121Contacts tracked

873Verified emails

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The 25 largest environmental engineering firms based in Irvine, United States

Ranked by team size

Top 25 of 35 company matches for environmental engineering firms based in Irvine, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Shimmick Corporation	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	760 contacts →
	Exact match “At Shimmick (NASDAQ: SHIM), we’re shaping the future of sustainable infrastructure through innovative solutions that advance communities and protect our environment.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	LSA	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	201-500	332 contacts →
	Exact match “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	IDS Group, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	51-200	205 contacts →
	Exact match “IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	Leighton	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	51-200	190 contacts →
	Exact match “Leighton, a Verdantas Company, provides environmental, geotechnical, materials testing, and special inspection services across the built community.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5	RBF Consulting, A Company Of Michael Baker International	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	176 contacts →
	Exact match “RBF Consulting, a Company of Michael Baker International, LLC, is one of the Nation's leading civil engineering, design, planning, surveying and construction management firms…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	AKM Consulting Engineers	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	49 contacts →
	Exact match “Based in Irvine, California, AKM Consulting Engineers is a multidisciplinary firm providing expert engineering solutions to municipalities, public agencies, and state and federal…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7	C&v Consulting, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	37 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8	Ultrasystems Environmental, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	51-200	35 contacts →
	Exact match “UltraSystems is a leader in compliance with federal, state, and local environmental regulations governing project planning and development.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	Advanced Construction Technologies	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	51-200	32 contacts →
	Exact match “Advanced Construction Technologies (ACT) is a diverse construction company that specializes in environmental engineering, geotechnical engineering and general construction…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10	Adep Precision Contracting	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	51-200	30 contacts →
	Exact match “ADEP Precision’s (ADEP) vision is to be the safest, most reliable demolition and remediation contractor in the nation, persistent in the pursuit of client and employee excellence.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11	M.S. Hatch Consulting, LLC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	20 contacts →
	Exact match “M.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	N2w Engineering, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	17 contacts →
	Exact match “We’re redefining what it means to partner with a consulting engineering firm.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	Terra Pacific Group Incorporated	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	14 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	PBA Engineering	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	11 contacts →
	Exact match “PBA is a full-service structural, mechanical, and plumbing engineering firm founded by Sharad T.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15	Murex Environmental	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	10 contacts →
	Exact match “Murex Environmental, Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	Advanced Earth Sciences, A Verdantas Company	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	9 contacts →
	Exact match “Advanced Earth Sciences, Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	Avocet Environmental, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	7 contacts →
	Exact match “A civil and environmental engineering company with expertise in environmental infrastructure (water, wastewater, storm water, landfills), environmental assessment, and remediation.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	Adams Streeter Civil Engineers, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	6 contacts →
	Exact match “Adams-Streeter is Southern California’s most trusted civil engineering firm offering a wide-range of services based around bringing communities together and increasing overall…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	Genterra Consultants, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	5 contacts →
	Exact match “GENTERRA Consultants, Inc.(GENTERRA) offers a full range of engineering and geotechnical consulting services for all types of projects, with emphasis on those involving proposed…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	Noble Consultants, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	51-200	4 contacts →
	Exact match “Noble Consultants-G.E.C, Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21	Spurgin & Associates	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	1-10	4 contacts →
	Exact match “For three decades Spurgin & Associates has assisted government and industry in the development and management of environmental programs.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22	KES Environmental	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	3 contacts →
	Exact match “Our goal is to efficiently assist New and Existing construction, along with Industrial customers with the complex array of Environmental rules and regulations issued by the local…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23	Zmassociates Environmental Corporation	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	3 contacts →
	Exact match “ZMassociates Environmental Corp.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24	Remediation Sciences	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	11-50	3 contacts →
	Exact match “Remediation Sciences is a full service environmental consulting and remediation organization that provides services in environmental sciences and hydrology.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25	Enviro-Terra, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 2026	1-10	1 contacts →
	Exact match “Enviro-Terra is a modern engineering firm specializing primarily in efficient application of environmental remediation, horizontal construction, and infrastructure advancement.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 35 environmental engineering firms based in Irvine, United States

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Environmental engineering firms based in Irvine, United States at a glance

As of Sep 16, 2026

41.2%Verified-email coverage

60.6Average contacts per company

11-50Median size (employees)

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 35 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Irvine, United States whose business descriptions match “environmental engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 873 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Environmental engineering firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental engineering firms are there based in Irvine, United States?

RevenueBase identified 35 company matches for environmental engineering firms associated with Irvine, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Shimmick Corporation tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most environmental engineering firms?

Houston leads the United States with 138 company records, followed by New York (101) and Austin (73). Irvine has 35.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 873 professional contacts with verified work emails tracked across these 35 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.