Company lists · Data refreshed November 2026

Top 25 Oil and gas site remediation companies based in the United States

RevenueBase identified 1,375 company matches for oil and gas site remediation companies associated with the United States as of November 2026 and tracks 25,266 professional contacts across them, including 8,732 with verified work emails. Houston is the largest hub.

This list covers company matches for oil and gas site remediation companies 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 4, 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 4, 2026 How this list was built
1,375Companies
25,266Contacts tracked
8,732Verified emails
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The 25 largest oil and gas site remediation companies based in the United States

Ranked by team size
Top 25 of 1,375 company matches for oil and gas site remediation companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 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 matchIrvine, CA, United StatesHQ recorded Nov 4, 2026n/a1,371 contacts →

Exact match

“Training and Development Solutions”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
2Exact matchWestmont, IL, United StatesHQ recorded Nov 4, 2026501-1,000495 contacts →

Exact match

“ENTACT is the partner of choice in solving our customer's most complex environmental remediation and geotechnical infrastructure challenges.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
3Exact matchIslandia, NY, United StatesHQ recorded Nov 4, 2026201-500474 contacts →

Exact match

“The Roux organization applies sophisticated scientific, technical, and managerial resources to develop and implement effective, efficient, and sustainable solutions to our…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4Exact matchReston, CA, United StatesHQ recorded Nov 4, 2026501-1,000453 contacts →

Exact match

“HydroGeoLogic, Inc.(HGL) is an employee-owned company with over 36 years of experience developing innovative, effective, and sustainable engineering and remediation solutions to…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
5Exact matchLa Porte, TX, United StatesHQ recorded Nov 4, 20261,001-5,000356 contacts →

Exact match

“Evergreen North America Industrial Services offers a comprehensive range of Industrial Services for oil refineries, petrochemical plants, power generation plants, manufacturing…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
6Exact matchSt. Louis, TX, United StatesHQ recorded Nov 4, 2026201-500293 contacts →

Exact match

“Environmental Restoration LLC (ER) is 100% employee-owned and provides Environmental Site Remediation, Construction and Emergency Response services for hazardous waste materials…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
7Exact matchNiagara Falls, MD, United StatesHQ recorded Nov 4, 2026501-1,000290 contacts →

Exact match

“Sevenson Environmental Services, Inc.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8Exact matchBothell, WA, United StatesHQ recorded Nov 4, 20261,001-5,000262 contacts →

Exact match

“CASCADE is the leading provider of environmental and geotechnical drilling, site investigation and environmental remediation.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9Exact matchCalverton, PA, United StatesHQ recorded Nov 4, 2026201-500259 contacts →

Exact match

“Miller Environmental Group is a leading environmental response, remediation and restoration services company, providing industry, government, commercial and residential customers…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10Exact matchAzusa, CA, United StatesHQ recorded Nov 4, 2026501-1,000248 contacts →

Exact match

“Alliance is one of the most experienced and trusted environmental contractors in California.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11Exact matchSpringfield, AR, United StatesHQ recorded Nov 4, 2026201-500245 contacts →

Exact match

“Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
12Exact matchMissoula, MT, United StatesHQ recorded Nov 4, 2026201-500241 contacts →

Exact match

“Envirocon safely and reliably delivers projects that protect, remediate, and restore our environment for commercial and government clients nationwide.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
13Exact matchNorcross, TX, United StatesHQ recorded Nov 4, 202651-200235 contacts →

Exact match

“CAPE is an award-winning environmental remediation and infrastructure construction firm with a history of delivering excellence since 1985.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14Exact matchSignal Hill, CA, United StatesHQ recorded Nov 4, 2026201-500234 contacts →

Exact match

“Patriot Environmental Services, a Crystal Clean company, is a leading environmental service provider with clients throughout the Southwestern United States.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Nov 4, 2026201-500226 contacts →

Exact match

“Since 1989, RECON has successfully completed over environmental remediation, geotechnical, and mine reclamation projects.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16Exact matchUnion, OR, United StatesHQ recorded Nov 4, 2026201-500216 contacts →

Exact match

“Hillmann has been a well-recognized leader in the Environmental Health & Safety, Due Diligence & Remediation Management, and Construction Services industries since 1985.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17Exact matchRandolph, MA, United StatesHQ recorded Nov 4, 2026501-1,000212 contacts →

Exact match

“MER provides specialized services to clients within the specific Energy & Industrial, Marine, Railroad and Government sectors throughout the United States.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18Exact matchMiami Lakes, FL, United StatesHQ recorded Nov 4, 2026201-500211 contacts →

Exact match

“The EE & G Group dates back to 1986 and has been in business for over 33 years.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19Exact matchIndianapolis, IN, United StatesHQ recorded Nov 4, 202651-200199 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20Exact matchElmhurst, IN, United StatesHQ recorded Nov 4, 2026501-1,000198 contacts →

Exact match

“Brandenburg, established in 1968, is one of the nation’s premier firms specializing in demolition and environmental remediation, which includes asbestos abatement, hazardous…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
21Exact matchAtlanta, IL, United StatesHQ recorded Nov 4, 2026201-500198 contacts →

Exact match

“With more than 50 years of excellence, KEMRON Environmental Services, Inc.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
22Exact matchSt. Paul, MN, United StatesHQ recorded Nov 4, 2026201-500190 contacts →

Exact match

“Bay West is an environmental and industrial services provider for site investigations, groundwater and soil remediation, munitions cleanup, hazardous waste management, industrial…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
23Exact matchMidland, NM, United StatesHQ recorded Nov 4, 2026501-1,000167 contacts →

Exact match

“SAFETY At Mulholland the safe completion of each job we perform is our number one priority.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
24Exact matchLa Porte, LA, United StatesHQ recorded Nov 4, 2026201-500167 contacts →

Exact match

“Envent Corporation is the industry leader in environmental services for the petrochemical industry.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
25Exact matchFarmington Hills, WI, United StatesHQ recorded Nov 4, 2026201-500162 contacts →

Exact match

“CTI and Associates, Inc.(CTI) is an Environmental, Remediation, Engineering, and Construction firm focused on protecting, enhancing and restoring our environment.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase

Showing 25 of 1,375 oil and gas site remediation companies based in the United States

See the full list, filter by size, metro and specialty, and access 8,732 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas site remediation companies based in the United States at a glance

As of Nov 4, 2026
34.6%Verified-email coverage
18.4Average contacts per company
11-50Median size (employees)
2.8%Largest-city concentration · Houston
Nov 4, 2026Page data refreshed

Companies by employee count

1-10
501
11-50
591
51-200
199
201-500
49
501-1,000
16
1,001-5,000
9
5,001-10,000
1
10001+
1

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 1,375 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 “oil and gas site remediation companies” 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 8,732 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 4, 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.

Oil and gas site remediation companies by metro

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 “oil and gas site remediation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas site remediation companies are there based in the United States?

RevenueBase identified 1,375 company matches for oil and gas site remediation companies 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?

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

Which city has the most oil and gas site remediation companies?

Houston leads with 39 company records, followed by New York (18) and Midland (14).

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 8,732 professional contacts with verified work emails tracked across these 1,375 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 4, 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.