Company lists · Data refreshed November 2026

Top 25 Emissions permitting services based in the United States

RevenueBase identified 103 company matches for emissions permitting services associated with the United States as of November 2026 and tracks 998 professional contacts across them, including 514 with verified work emails. Houston is the largest hub.

This list covers company matches for emissions permitting services 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 November 6, 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 Nov 6, 2026 How this list was built
103Companies
998Contacts tracked
514Verified emails
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The 25 largest emissions permitting services based in the United States

Ranked by team size
Top 25 of 103 company matches for emissions permitting services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPalatine, TX, United StatesHQ recorded Nov 6, 202651-200158 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHouston, FL, United StatesHQ recorded Nov 6, 202651-20079 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBroken Arrow, LA, United StatesHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“Air Hygiene is a national leader in stack testing, air emissions measurement, RATAs, and regulatory compliance services for industrial facilities across the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLong Beach, CA, United StatesHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“STAX is an emerging leader in emissions reduction services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHelena, MT, United StatesHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“Air Quality and Environmental Consulting Bison Engineering, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchGoshen, United StatesHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“BCA Environmental Consultants helps industrial and commercial facilities stay compliant with federal, state, and local environmental regulations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCamarillo, CA, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Ashworth Leininger Group was formed to offer expert air quality and environmental consulting services to a broad spectrum of clients – industry, trade associations and agencies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchKaty, TX, United StatesHQ recorded Nov 6, 202651-20030 contacts →

Exact match

“Formed in 2010 and headquartered in Houston, Texas, Encino Environmental Services, LLC is an emissions testing, monitoring, and compliance support firm serving critical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchReading, PA, United StatesHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“Since 2004, Liberty Environmental has been providing regional and national clients with services in air quality consulting and pollution control system design, environmental…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCarrollton, TX, United StatesHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“BAIR IS NOW OFFERING LDAR SERVICES!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSparta, NJ, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Trace Environmental provides a fully EPA compliant suite of products and services for the continuous emissions monitoring market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHayward, CA, United StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“At EOSolutions, we know you want your operations to stay in compliance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchThe Woodlands, TX, United StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“EnTech provides to the Oil & Gas Industry compliance assistance, permitting / modeling support, emission database support, Greenhouse Gas (GHG) reporting / monitoring, thermal…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Mounce & Associates is a dynamic company providing regulatory compliance programs and services to the industrial community located throughout the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchElkton, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Air Clear is an air pollution control equipment company based in Northern Maryland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWauconda, IL, United StatesHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“Established in 1983, ARI Environmental, Inc.(ARI) is a leading environmental air emissions testing company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchGreensboro, NC, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“We are a leading environmental services company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSheridan, WY, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“We are emissions compliance professionals who specialize in communications-driven emissions testing to help our partners in the oil & gas industries achieve their compliance goals.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“BlueScape is a progressive air quality and environmental services firm located in the Western US that specializes in permitting and compliance services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLakewood, CO, United StatesHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Rule Engineering provides effective solutions to environmental, regulatory, and planning regulations for industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“AYER Quality Engineering LLC (AYER) is an environmental consulting services company based out of 3908 Pocahontas Avenue, Cincinnati, Ohio, United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSan Bernardino, CA, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Today FleetServ provides a full range of diesel emissions solutions, eliminating all of the stress and headache often associated with diesel emissions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLongview, TX, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Environmental Compliance isn't just a box to check-it’s a critical part of long-term operational success.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchEvansville, IN, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Air Quality Services was founded in 1998 to exclusively provide air-related environmental services including: stack monitoring (CEMS), consulting/permitting, stack testing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 103 emissions permitting services based in the United States

See the full list, filter by size, metro and specialty, and access 514 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Emissions permitting services based in the United States at a glance

As of Nov 6, 2026
51.5%Verified-email coverage
9.7Average contacts per company
1-10Median size (employees)
6.8%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
66
11-50
28
51-200
9

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 103 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 “emissions permitting services” 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 514 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 November 6, 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 “emissions permitting services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many emissions permitting services are there based in the United States?

RevenueBase identified 103 company matches for emissions permitting services associated with the United States as of November 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?

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

Which city has the most emissions permitting services?

Houston leads with 7 company records, followed by Austin (5) and Denver (3).

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 514 professional contacts with verified work emails tracked across these 103 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 November 6, 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.