Company lists · Data refreshed September 2026

Top 25 Marine environmental compliance consultants based in the United States

Name: Marine environmental compliance consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 965 companies tracked

RevenueBase identified 965 marine environmental compliance consultants headquartered in the United States as of September 2026 and tracks 14,270 professional contacts across them, including 6,541 with verified work emails. Houston is the largest hub.

This list covers marine environmental compliance consultants headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

965Companies

14,270Contacts tracked

6,541Verified emails

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The 25 largest marine environmental compliance consultants based in the United States

Ranked by team size

Top 25 of 965 marine environmental compliance consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to marine environmental compliance consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Alliance Technical Group	Partial evidence	Decatur, AL, United StatesHQ checked Sep 20, 2026	1,001-5,000	956 contacts →
	Partial evidence “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Source: RevenueBase Database · checked Sep 20, 2026
2	VLS Environmental Solutions, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	481 contacts →
	Partial evidence “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Source: RevenueBase Database · checked Sep 20, 2026
3	Anchor QEA	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	501-1,000	479 contacts →
	Partial evidence “Headquartered in Seattle, Washington, Anchor QEA is a nationally recognized environmental science and engineering consulting firm specializing in aquatic, shoreline, and water…” Source: RevenueBase Database · checked Sep 20, 2026
4	Groundwater & Environmental Services, INC	Partial evidence	Wall Township, NJ, United StatesHQ checked Sep 20, 2026	201-500	447 contacts →
	Partial evidence “We are Groundwater & Environmental Services, Inc, better known as GES.” Source: RevenueBase Database · checked Sep 20, 2026
5	ROUX	Partial evidence	Islandia, NY, United StatesHQ checked Sep 20, 2026	201-500	433 contacts →
	Partial evidence “Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Source: RevenueBase Database · checked Sep 20, 2026
6	Drew Marine	Strong evidence	Waterbury, CT, United StatesHQ checked Sep 20, 2026	201-500	304 contacts →
	Strong evidence “Drew Marine is a global leader in maritime water treatment, fuel management, refrigerant compliance, cleaning solutions, and technical services trusted by ship owners, operators…” Source: RevenueBase Database · checked Sep 20, 2026
7	Resolve Marine	Strong evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 20, 2026	51-200	277 contacts →
	Strong evidence “Resolve Marine, a global leader in vessel salvage, emergency response, compliance and specialized marine services, has served and supported clients and projects for 40 years.” Source: RevenueBase Database · checked Sep 20, 2026
8	Metiri Group	Partial evidence	Clovis, CA, United StatesHQ checked Sep 20, 2026	n/a	233 contacts →
	Partial evidence “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Source: RevenueBase Database · checked Sep 20, 2026
9	Global Diving & Salvage, INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	201-500	217 contacts →
	Partial evidence “Global is a leader in the marine services industry with decades of experience managing complex, critical and technical projects in and around the water.” Source: RevenueBase Database · checked Sep 20, 2026
10	Normandeau Associates, INC	Indirect evidence	Bedford, NH, United StatesHQ checked Sep 20, 2026	201-500	189 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
11	Enviroscience, INC	Partial evidence	Stow, OH, United StatesHQ checked Sep 20, 2026	51-200	176 contacts →
	Partial evidence “EnviroScience is a team of over 150 expert biologists, commercial divers, environmental engineers, and environmental scientists that provides biomonitoring, environmental…” Source: RevenueBase Database · checked Sep 20, 2026
12	A.I.S. INC	Indirect evidence	North Dartmouth, MA, United StatesHQ checked Sep 20, 2026	201-500	173 contacts →
	Indirect evidence “A.I.S, Inc (AIS) supports the stewardship of our nation's ocean resources and their habitats.” Source: RevenueBase Database · checked Sep 20, 2026
13	Ecorp Consulting, INC	Indirect evidence	Rocklin, CA, United StatesHQ checked Sep 20, 2026	51-200	166 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
14	Quest Resource Management Group, A Qrhc Company Nasdaq Qrhc	Partial evidence	The Colony, TX, United StatesHQ checked Sep 20, 2026	51-200	147 contacts →
	Partial evidence “Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…” Source: RevenueBase Database · checked Sep 20, 2026
15	Mostardi Platt	Partial evidence	Elmhurst, IL, United StatesHQ checked Sep 20, 2026	51-200	140 contacts →
	Partial evidence “Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Source: RevenueBase Database · checked Sep 20, 2026
16	Ensolum, LLC	Partial evidence	Dallas, TX, United StatesHQ checked Sep 20, 2026	51-200	136 contacts →
	Partial evidence “OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Source: RevenueBase Database · checked Sep 20, 2026
17	Lanier & Associates Consulting Engineers, INC	Partial evidence	New Orleans, LA, United StatesHQ checked Sep 20, 2026	51-200	122 contacts →
	Partial evidence “Lanier & Associates is a multi-disciplined engineering firm that specializes in industrial marine projects with civil, structural, mechanical, electrical and instrumentation…” Source: RevenueBase Database · checked Sep 20, 2026
18	Edge Engineering And Science, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	51-200	116 contacts →
	Indirect evidence “Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 20, 2026
19	Tdi-Brooks	Partial evidence	College Station, TX, United StatesHQ checked Sep 20, 2026	51-200	107 contacts →
	Partial evidence “TDI-Brooks is a 27-year-old research and service company specializing in geotechnical and offshore survey projects; multi-disciplinary oceanographic and environmental projects…” Source: RevenueBase Database · checked Sep 20, 2026
20	Woods Hole Group, INC	Partial evidence	Bourne, MA, United StatesHQ checked Sep 20, 2026	51-200	105 contacts →
	Partial evidence “Woods Hole Group brings over 35 years of experience, committed to exceeding client objectives while safeguarding the environmental health of our planet.” Source: RevenueBase Database · checked Sep 20, 2026
21	Techlaw	Partial evidence	Chantilly, VA, United StatesHQ checked Sep 20, 2026	201-500	104 contacts →
	Partial evidence “Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.” Source: RevenueBase Database · checked Sep 20, 2026
22	Glosten	Strong evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	104 contacts →
	Strong evidence “Glosten is a full-service naval architecture and marine engineering consultancy with over 65 years of experience successfully taking on one-of-a-kind marine projects.” Source: RevenueBase Database · checked Sep 20, 2026
23	Hart & Hickman, PC	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 20, 2026	51-200	103 contacts →
	Partial evidence “Hart & Hickman PC provides environmental consulting services to commercial, industrial, and governmental clients throughout the Southeast US.” Source: RevenueBase Database · checked Sep 20, 2026
24	CK Associates Environmental Consultants	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 20, 2026	51-200	101 contacts →
	Partial evidence “CK Associates is an environmental consulting firm that is fully owned by its employees.” Source: RevenueBase Database · checked Sep 20, 2026
25	Ocean Associates, INC	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	51-200	100 contacts →
	Indirect evidence “OAI provides professional consulting services to government organizations, the private sector, academia, and UN agencies.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: marine environmental compliance consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names marine environmental compliance consultants.
Partial evidence: Its own public description names part of marine environmental compliance consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine environmental compliance consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 965 marine environmental compliance consultants based in the United States

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Marine environmental compliance consultants based in the United States at a glance

As of Sep 20, 2026

45.8%Verified-email coverage

14.8Average contacts per company

1-10Median size (employees)

4.6%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

537

11-50

326

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 965 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among marine environmental compliance consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “marine environmental compliance consultants”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names marine environmental compliance consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among marine environmental compliance consultants, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 6,541 across the full list. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Marine environmental compliance consultants by metro

Marine environmental compliance consultants in Houston44

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names marine environmental compliance consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many marine environmental compliance consultants are there based in the United States?

RevenueBase identified 965 marine environmental compliance consultants headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Alliance Technical Group, headquartered in Decatur, tops this list with the largest team on record.

Which city has the most marine environmental compliance consultants?

Houston leads with 44 headquartered companies, followed by Seattle (18) and Fort Lauderdale (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 6,541 verified decision-maker contacts tracked across these 965 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 Smart Search, 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.