Company lists · Data refreshed September 2026
Top 25 Air quality permitting consultants based in the United States
RevenueBase identified 386 company matches for air quality permitting consultants associated with the United States as of September 2026 and tracks 3,823 professional contacts across them, including 1,846 with verified work emails. Houston is the largest hub.
This list covers company matches for air quality permitting 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 21, 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.
The 25 largest air quality permitting consultants based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 166 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 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 21, 2026 · View company records in RevenueBase | |||||
| 3 | 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 21, 2026 · View company records in RevenueBase | |||||
| 4 | 101 contacts → | ||||
Exact match “CK Associates is an environmental consulting firm that is fully owned by its employees.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 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 21, 2026 · View company records in RevenueBase | |||||
| 6 | 97 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 92 contacts → | ||||
Exact match “Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 70 contacts → | ||||
Exact match “We deliver quality solutions with integrity and expertise, every time.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 68 contacts → | ||||
Exact match “AIR HYGIENE is known for providing professional services which include the following:* Providing superior, cost saving services to our clients!* High quality emission testing…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 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 21, 2026 · View company records in RevenueBase | |||||
| 11 | 63 contacts → | ||||
Exact match “Sage ATC Environmental Consulting is now Atlas.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 49 contacts → | ||||
Exact match “CDH Consulting specializes in helping energy companies understand and manage the numerous environmental and regulatory obligations affecting their operations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 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 21, 2026 · View company records in RevenueBase | |||||
| 14 | 44 contacts → | ||||
Exact match “APSM started in the early 1990s as a consulting firm assisting companies with the OSHA, PSM, and EPA RMP regulations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 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 21, 2026 · View company records in RevenueBase | |||||
| 16 | 40 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 40 contacts → | ||||
Exact match “Air Quality and Environmental Consulting Bison Engineering, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 39 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 38 contacts → | ||||
Exact match “RSB Environmental, an Alliance Technical Group company, is a full-service environmental engineering consulting firm, specializing in environmental health and safety services and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 37 contacts → | ||||
Exact match “AirQuest Environmental, Inc.("AirQuest") solves environmental, health, and safety problems, improving the air quality, health of your workforce, and the value of your buildings.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 36 contacts → | ||||
Exact match “The WCM Group is a team of environmental consultants, engineers and experienced professionals dedicated to helping businesses navigate the environmental regulatory landscape.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 35 contacts → | ||||
Exact match “Catalyst Environmental Solutions Corporation is a full service environmental consulting firm, specializing in the energy sector, land development and remediation, and water…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 35 contacts → | ||||
Exact match “The science, safety, and engineering professionals at CSC possess extensive experience delivering wide ranges of environmental consulting and industrial hygiene (IH) services…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 34 contacts → | ||||
Exact match “Advantage Environmental Consultants, LLC (AEC) is a nationwide environmental consulting firm with six regional offices located in the following areas: Metro Washington, D.C…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 34 contacts → | ||||
Exact match “Air Resource Specialists, Inc.(ARS) is a nationally recognized leader in air quality-related environmental monitoring, modeling, compliance, auditing, analysis, and research.” Recorded in the RevenueBase company graph · Sep 21, 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 “air quality permitting 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 386 air quality permitting consultants based in the United States
See the full list, filter by size, metro and specialty, and access 1,846 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Air quality permitting consultants based in the United States at a glance
As of Sep 21, 2026Companies by employee count
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 386 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 “air quality permitting 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 1,846 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 21, 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 “air quality permitting consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many air quality permitting consultants are there based in the United States?
RevenueBase identified 386 company matches for air quality permitting 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?
Ecorp Consulting, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most air quality permitting consultants?
Houston leads with 21 company records, followed by Austin (6) and Denver (6).
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 1,846 professional contacts with verified work emails tracked across these 386 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 386 air quality permitting consultants based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Air quality permitting consultants by geography
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Air quality permitting consultants based in Brazil
- Air quality permitting consultants based in Canada
- Air quality permitting consultants based in Chile
- Air quality permitting consultants based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
Company intelligence · public preview
Top 25 air quality permitting consultants based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 386 matching company records for air quality permitting consultants based in the United States, with 3,823 tracked contacts and 1,846 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 air quality permitting consultants based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Ecorp Consulting, INCecorpconsulting.comHQ: Rocklin, CA, United StatesReported employees: 51-200 | Rocklin, CA, United States | 51-200 | Exact match | 166 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 2 |  Cleanair Engineeringcleanair.comHQ: Palatine, IL, United StatesReported employees: 51-200 | Palatine, IL, United States | 51-200 | Exact match | 152 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Mostardi Plattmostardiplatt.comHQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 140 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HQ: Baton Rouge, LA, United StatesReported employees: 51-200 | Baton Rouge, LA, United States | 51-200 | Exact match | 101 contacts → |
“CK Associates is an environmental consulting firm that is fully owned by its employees.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Chambers Group, INCchambersgroupinc.comHQ: Costa Mesa, CA, United StatesReported employees: 51-200 | Costa Mesa, CA, United States | 51-200 | Exact match | 98 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  A-Tech Consulting, INCatechinc.netHQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 97 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 |  Yorke Engineering, LLCyorkeengr.comHQ: San Juan Capistrano, CA, United StatesReported employees: 51-200 | San Juan Capistrano, CA, United States | 51-200 | Exact match | 92 contacts → |
“Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Cgrs INCcgrs.comHQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 70 contacts → |
“We deliver quality solutions with integrity and expertise, every time.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  AIR Hygiene International, INCairhygiene.comHQ: Tulsa, United StatesReported employees: 11-50 | Tulsa, United States | 11-50 | Exact match | 68 contacts → |
“AIR HYGIENE is known for providing professional services which include the following:* Providing superior, cost saving services to our clients!* High quality emission testing…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Aarc Environmentalaarcenv.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 63 contacts → |
“As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Sage ATC Environmental Consultingoneatlas.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 63 contacts → |
“Sage ATC Environmental Consulting is now Atlas.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | CDH Consultingcdhconsult.com HQ: Thornton, CO, United StatesReported employees: 11-50 | Thornton, CO, United States | 11-50 | Exact match | 49 contacts → |
“CDH Consulting specializes in helping energy companies understand and manage the numerous environmental and regulatory obligations affecting their operations.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Spheros Environmentalspherosenv.comHQ: Denver, CO, United StatesReported employees: 201-500 | Denver, CO, United States | 201-500 | Exact match | 48 contacts → |
“Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  APSMapsm.netHQ: Alpine, UT, United StatesReported employees: 11-50 | Alpine, UT, United States | 11-50 | Exact match | 44 contacts → |
“APSM started in the early 1990s as a consulting firm assisting companies with the OSHA, PSM, and EPA RMP regulations.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  ACC Environmental Consultantsaccenv.comHQ: Oakland, CA, United StatesReported employees: 51-200 | Oakland, CA, United States | 51-200 | Exact match | 41 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Panorama Environmental, INCpanoramaenv.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 40 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 |  Bison Engineering, INCbison-eng.comHQ: Helena, MT, United StatesReported employees: 11-50 | Helena, MT, United States | 11-50 | Exact match | 40 contacts → |
“Air Quality and Environmental Consulting Bison Engineering, Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Sapphos Environmental, INCsapphosenvironmental.comHQ: Pasadena, CA, United StatesReported employees: 11-50 | Pasadena, CA, United States | 11-50 | Exact match | 39 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 38 contacts → |
“RSB Environmental, an Alliance Technical Group company, is a full-service environmental engineering consulting firm, specializing in environmental health and safety services and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Airquest Environmental, INCairquestinc.comHQ: Fort Lauderdale, FL, United StatesReported employees: 11-50 | Fort Lauderdale, FL, United States | 11-50 | Exact match | 37 contacts → |
“AirQuest Environmental, Inc.("AirQuest") solves environmental, health, and safety problems, improving the air quality, health of your workforce, and the value of your buildings.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | The WCM Group, INCwcmgroup.com HQ: Humble, TX, United StatesReported employees: 11-50 | Humble, TX, United States | 11-50 | Exact match | 36 contacts → |
“The WCM Group is a team of environmental consultants, engineers and experienced professionals dedicated to helping businesses navigate the environmental regulatory landscape.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Catalyst Environmental Solutions Corporationce.solutions HQ: Santa Monica, CA, United StatesReported employees: 11-50 | Santa Monica, CA, United States | 11-50 | Exact match | 35 contacts → |
“Catalyst Environmental Solutions Corporation is a full service environmental consulting firm, specializing in the energy sector, land development and remediation, and water…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Chatsworth, CA, United StatesReported employees: 11-50 | Chatsworth, CA, United States | 11-50 | Exact match | 35 contacts → |
“The science, safety, and engineering professionals at CSC possess extensive experience delivering wide ranges of environmental consulting and industrial hygiene (IH) services…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Advantage Environmental Consultants, LLCaec-env.comHQ: Jessup, MD, United StatesReported employees: 11-50 | Jessup, MD, United States | 11-50 | Exact match | 34 contacts → |
“Advantage Environmental Consultants, LLC (AEC) is a nationwide environmental consulting firm with six regional offices located in the following areas: Metro Washington, D.C…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  AIR Resource Specialistsair-resource.comHQ: Fort Collins, CO, United StatesReported employees: 11-50 | Fort Collins, CO, United States | 11-50 | Exact match | 34 contacts → |
“Air Resource Specialists, Inc.(ARS) is a nationally recognized leader in air quality-related environmental monitoring, modeling, compliance, auditing, analysis, and research.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 386 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Air quality permitting consultants: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
385 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 386 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for air quality permitting consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many air quality permitting consultants did RevenueBase find based in the United States?
The saved snapshot records 386 matching company records, 3,823 tracked contacts and 1,846 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Air quality permitting consultants by geography
Cite this list
RevenueBase Data Team. Top 25 air quality permitting consultants based in the United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/air-quality-permitting-consultants/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Air quality permitting consultants based in Brazil
- Air quality permitting consultants based in Canada
- Air quality permitting consultants based in Chile
- Air quality permitting consultants based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
Company intelligence · public preview
Top 25 air quality permitting consultants based in the United States
RevenueBase records 386 matching company records for air quality permitting consultants based in the United States, with 3,823 tracked contacts and 1,846 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 air quality permitting consultants based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Ecorp Consulting, INCecorpconsulting.com HQ: Rocklin, CA, United StatesReported employees: 51-200 | Rocklin, CA, United States | 51-200 | Exact match | 166 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 2 | Cleanair Engineeringcleanair.com HQ: Palatine, IL, United StatesReported employees: 51-200 | Palatine, IL, United States | 51-200 | Exact match | 152 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Mostardi Plattmostardiplatt.com HQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 140 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HQ: Baton Rouge, LA, United StatesReported employees: 51-200 | Baton Rouge, LA, United States | 51-200 | Exact match | 101 contacts → |
“CK Associates is an environmental consulting firm that is fully owned by its employees.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Chambers Group, INCchambersgroupinc.com HQ: Costa Mesa, CA, United StatesReported employees: 51-200 | Costa Mesa, CA, United States | 51-200 | Exact match | 98 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | A-Tech Consulting, INCatechinc.net HQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 97 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | Yorke Engineering, LLCyorkeengr.com HQ: San Juan Capistrano, CA, United StatesReported employees: 51-200 | San Juan Capistrano, CA, United States | 51-200 | Exact match | 92 contacts → |
“Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Cgrs INCcgrs.com HQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 70 contacts → |
“We deliver quality solutions with integrity and expertise, every time.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | AIR Hygiene International, INCairhygiene.com HQ: Tulsa, United StatesReported employees: 11-50 | Tulsa, United States | 11-50 | Exact match | 68 contacts → |
“AIR HYGIENE is known for providing professional services which include the following:* Providing superior, cost saving services to our clients!* High quality emission testing…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Aarc Environmentalaarcenv.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 63 contacts → |
“As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Sage ATC Environmental Consultingoneatlas.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 63 contacts → |
“Sage ATC Environmental Consulting is now Atlas.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | CDH Consultingcdhconsult.com HQ: Thornton, CO, United StatesReported employees: 11-50 | Thornton, CO, United States | 11-50 | Exact match | 49 contacts → |
“CDH Consulting specializes in helping energy companies understand and manage the numerous environmental and regulatory obligations affecting their operations.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Spheros Environmentalspherosenv.com HQ: Denver, CO, United StatesReported employees: 201-500 | Denver, CO, United States | 201-500 | Exact match | 48 contacts → |
“Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | APSMapsm.net HQ: Alpine, UT, United StatesReported employees: 11-50 | Alpine, UT, United States | 11-50 | Exact match | 44 contacts → |
“APSM started in the early 1990s as a consulting firm assisting companies with the OSHA, PSM, and EPA RMP regulations.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | ACC Environmental Consultantsaccenv.com HQ: Oakland, CA, United StatesReported employees: 51-200 | Oakland, CA, United States | 51-200 | Exact match | 41 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Panorama Environmental, INCpanoramaenv.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 40 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | Bison Engineering, INCbison-eng.com HQ: Helena, MT, United StatesReported employees: 11-50 | Helena, MT, United States | 11-50 | Exact match | 40 contacts → |
“Air Quality and Environmental Consulting Bison Engineering, Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sapphos Environmental, INCsapphosenvironmental.com HQ: Pasadena, CA, United StatesReported employees: 11-50 | Pasadena, CA, United States | 11-50 | Exact match | 39 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 38 contacts → |
“RSB Environmental, an Alliance Technical Group company, is a full-service environmental engineering consulting firm, specializing in environmental health and safety services and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Airquest Environmental, INCairquestinc.com HQ: Fort Lauderdale, FL, United StatesReported employees: 11-50 | Fort Lauderdale, FL, United States | 11-50 | Exact match | 37 contacts → |
“AirQuest Environmental, Inc.("AirQuest") solves environmental, health, and safety problems, improving the air quality, health of your workforce, and the value of your buildings.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | The WCM Group, INCwcmgroup.com HQ: Humble, TX, United StatesReported employees: 11-50 | Humble, TX, United States | 11-50 | Exact match | 36 contacts → |
“The WCM Group is a team of environmental consultants, engineers and experienced professionals dedicated to helping businesses navigate the environmental regulatory landscape.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Catalyst Environmental Solutions Corporationce.solutions HQ: Santa Monica, CA, United StatesReported employees: 11-50 | Santa Monica, CA, United States | 11-50 | Exact match | 35 contacts → |
“Catalyst Environmental Solutions Corporation is a full service environmental consulting firm, specializing in the energy sector, land development and remediation, and water…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Chatsworth, CA, United StatesReported employees: 11-50 | Chatsworth, CA, United States | 11-50 | Exact match | 35 contacts → |
“The science, safety, and engineering professionals at CSC possess extensive experience delivering wide ranges of environmental consulting and industrial hygiene (IH) services…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Advantage Environmental Consultants, LLCaec-env.com HQ: Jessup, MD, United StatesReported employees: 11-50 | Jessup, MD, United States | 11-50 | Exact match | 34 contacts → |
“Advantage Environmental Consultants, LLC (AEC) is a nationwide environmental consulting firm with six regional offices located in the following areas: Metro Washington, D.C…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | AIR Resource Specialistsair-resource.com HQ: Fort Collins, CO, United StatesReported employees: 11-50 | Fort Collins, CO, United States | 11-50 | Exact match | 34 contacts → |
“Air Resource Specialists, Inc.(ARS) is a nationally recognized leader in air quality-related environmental monitoring, modeling, compliance, auditing, analysis, and research.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 386 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Air quality permitting consultants: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
385 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 386 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for air quality permitting consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many air quality permitting consultants did RevenueBase find based in the United States?
The saved snapshot records 386 matching company records, 3,823 tracked contacts and 1,846 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Air quality permitting consultants by geography
Cite this list
RevenueBase Data Team. Top 25 air quality permitting consultants based in the United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/air-quality-permitting-consultants/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Air quality permitting consultants based in Brazil
- Air quality permitting consultants based in Canada
- Air quality permitting consultants based in Chile
- Air quality permitting consultants based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States