Company lists · Data refreshed September 2026

Top 25 Automotive environmental compliance consultants based in the United States

Name: Automotive 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 30, 2026 405 companies tracked

RevenueBase identified 405 company matches for automotive environmental compliance consultants associated with the United States as of September 2026 and tracks 5,881 professional contacts across them, including 2,524 with verified work emails. Houston is the largest hub.

This list covers company matches for automotive environmental compliance consultants associated with the 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 30, 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 30, 2026 How this list was built

405Companies

5,881Contacts tracked

2,524Verified emails

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

Ranked by team size

Top 25 of 405 company matches for automotive environmental compliance consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 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	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Sep 30, 2026	1,001-5,000	956 contacts →
	Exact match “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	Antea Group USA	Exact match	St. Paul, MN, United StatesHQ recorded Sep 30, 2026	1,001-5,000	658 contacts →
	Exact match “Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Metiri Group	Exact match	Clovis, CA, United StatesHQ recorded Sep 30, 2026	n/a	233 contacts →
	Exact match “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	Cleanair Engineering	Exact match	Palatine, IL, United StatesHQ recorded Sep 30, 2026	51-200	152 contacts →
	Exact match “Since its founding in 1972, CleanAir has an established reputation for excellence on projects of all sizes, ranging from boiler, APC equipment and cooling tower efficiency testing…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Quest Resource Management Group, A Qrhc Company Nasdaq Qrhc	Exact match	The Colony, TX, United StatesHQ recorded Sep 30, 2026	51-200	147 contacts →
	Exact match “Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	Mostardi Platt	Exact match	Elmhurst, IL, United StatesHQ recorded Sep 30, 2026	51-200	140 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	Chambers Group, INC	Exact match	Costa Mesa, CA, United StatesHQ recorded Sep 30, 2026	51-200	98 contacts →
	Exact match “Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	A-Tech Consulting, INC	Exact match	Orange, CA, United StatesHQ recorded Sep 30, 2026	51-200	97 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	Cgrs INC	Exact match	Fort Collins, CO, United StatesHQ recorded Sep 30, 2026	51-200	70 contacts →
	Exact match “We deliver quality solutions with integrity and expertise, every time.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Aarc Environmental	Exact match	Houston, TX, United StatesHQ recorded Sep 30, 2026	51-200	63 contacts →
	Exact match “As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	Sage ATC Environmental Consulting	Exact match	Houston, TX, United StatesHQ recorded Sep 30, 2026	201-500	63 contacts →
	Exact match “Sage ATC Environmental Consulting is now Atlas.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Whitman	Exact match	Somerset, NJ, United StatesHQ recorded Sep 30, 2026	11-50	57 contacts →
	Exact match “Whitman is a full-service environmental, engineering, energy, waste management and EH & S compliance consulting firm with more than 37 years of professional experience.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	ONE Environmental Group, LLC	Exact match	Midlothian, VA, United StatesHQ recorded Sep 30, 2026	11-50	52 contacts →
	Exact match “ONE offers environmental consulting and industrial services to commercial, industrial, and government clients that are regulated by environmental state and federal regulations or…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	Carnow, Conibear & Assoc., LTD	Exact match	Chicago, IL, United StatesHQ recorded Sep 30, 2026	11-50	52 contacts →
	Exact match “Carnow, Conibear & Assoc, Ltd.(Carnow Conibear), a minority-owned, woman-owned and veteran-owned business, was established in 1975.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	GEL Engineering, LLC	Exact match	Charleston, SC, United StatesHQ recorded Sep 30, 2026	51-200	52 contacts →
	Exact match “GEL Engineering and GEL Engineering of NC provide environmental, engineering, surveying, and emissions testing services to our valued clients throughout the southeast and beyond.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Spheros Environmental	Exact match	Denver, CO, United StatesHQ recorded Sep 30, 2026	201-500	48 contacts →
	Exact match “Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	7g Environmental Compliance Management	Exact match	Tallahassee, FL, United StatesHQ recorded Sep 30, 2026	51-200	48 contacts →
	Exact match “7G Environmental Compliance Management (7G) is an environmental consulting firm headquartered in Tallahassee, Florida.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Enviroservices & Training Center	Exact match	Honolulu, HI, United StatesHQ recorded Sep 30, 2026	51-200	44 contacts →
	Exact match “We Are a Full-Service Environmental Consultancy.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	Aeterra, LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 30, 2026	11-50	43 contacts →
	Exact match “Aeterra is a full-service environmental and sustainability consulting firm that provides operating businesses and their owners with meaningful, practical, business-focused advice.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	GSS INC	Exact match	Urbandale, IA, United StatesHQ recorded Sep 30, 2026	11-50	41 contacts →
	Exact match “For more than two decades, GSS has been providing comprehensive environmental and compliance services to a variety of industries.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	ACC Environmental Consultants	Exact match	Oakland, CA, United StatesHQ recorded Sep 30, 2026	51-200	41 contacts →
	Exact match “Established in 1986, ACC Environmental Consultants, Inc.(ACC) is an employee-owned full service environmental consulting and design firm recognized for its excellent and reliable…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	ECCI	Exact match	Little Rock, AR, United StatesHQ recorded Sep 30, 2026	11-50	40 contacts →
	Exact match “We are a privately-owned engineering and environmental consulting firm that provide efficient engineering and environmental compliance solutions to a variety of industries and…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	Sapphos Environmental, INC	Exact match	Pasadena, CA, United StatesHQ recorded Sep 30, 2026	11-50	39 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	Vert Environmental	Exact match	San Diego, CA, United StatesHQ recorded Sep 30, 2026	11-50	39 contacts →
	Exact match “We are a green environmental testing and consulting firm, dedicated to providing the highest level of customer service available in the industry.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Peak Environmental, A Nova Group, GBC Company	Exact match	East Brunswick, NJ, United StatesHQ recorded Sep 30, 2026	11-50	38 contacts →
	Exact match “Peak Environmental, A Nova Group, GBC Company (Peak) is a full-service, forward-thinking environmental consulting firm serving clients from the petroleum, industrial, financial…” Recorded in the RevenueBase company graph · Sep 30, 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 “automotive environmental compliance consultants”. 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 405 automotive environmental compliance consultants based in the United States

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

As of Sep 30, 2026

42.9%Verified-email coverage

14.5Average contacts per company

1-10Median size (employees)

4.0%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

242

11-50

135

51-200

201-500

1,001-5,000

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 405 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 the United States whose business descriptions match “automotive environmental compliance consultants” 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 2,524 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 30, 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.

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 “automotive environmental compliance consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 405 company matches for automotive environmental compliance consultants associated with the 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?

Alliance Technical Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most automotive environmental compliance consultants?

Houston leads with 16 company records, followed by New York (6) and Austin (5).

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 2,524 professional contacts with verified work emails tracked across these 405 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 30, 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.