Company lists · Data refreshed September 2026

Top 25 Mining environmental consulting firms based in Houston, United States

Name: Mining environmental consulting firms based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 66 companies tracked

RevenueBase identified 66 mining environmental consulting firms headquartered in Houston, United States as of September 2026 and tracks 1,571 professional contacts across them, including 508 with verified work emails. Houston is the largest hub.

This list covers mining environmental consulting firms headquartered in Houston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

66Companies

1,571Contacts tracked

508Verified emails

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The 25 largest mining environmental consulting firms based in Houston, United States

Ranked by team size

Top 25 of 66 mining environmental consulting firms based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names mining environmental consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	GSI Environmental INCStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	259
	“GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Source: company website · checked Sep 5, 2026
2	Remedial Construction Services, L.P. ReconPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	215
	“Since 1989, RECON has successfully completed over environmental remediation, geotechnical, and mine reclamation projects.” Source: company website · checked Sep 5, 2026
3	Edge Engineering And Science, LLCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	116
	“Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Source: company website · checked Sep 5, 2026
4	Perennial Environmental ServicesPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	102
	“Perennial Environmental Services, LLC, has been providing technical environmental solutions and management with fresh perspectives and unparalleled efficiency since 2003.” Source: company website · checked Sep 5, 2026
5	Aarc EnvironmentalPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	63
	“As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.” Source: company website · checked Sep 5, 2026
6	RCP INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	63
	“RCP is the regulatory compliance and risk management expert for pipelines, facilities, and terminal operations.” Source: company website · checked Sep 5, 2026
7	Sage ATC Environmental ConsultingStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	63
	“Sage ATC Environmental Consulting is now Atlas.” Source: company website · checked Sep 5, 2026
8	Spirit Environmental Montrose Environmental GroupIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	54
	“In July of 2024, Spirit was acquired by Onterris.” Source: company website · checked Sep 5, 2026
9	Riner Engineering, Inc., A UES CompanyIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	47
	“Riner Engineering became part of the UES family of companies in June 2023, combining our local expertise with UES’s nationwide presence and resources.” Source: company website · checked Sep 5, 2026
10	RSB Environmental, An Alliance Technical Group CompanyStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	38
	“RSB Environmental, an Alliance Technical Group company, is a full-service environmental engineering consulting firm, specializing in environmental health and safety services and…” Source: company website · checked Sep 5, 2026
11	Phase Engineering, LLCStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	34
	“Phase Engineering, LLC, was founded in 1993 and is a leading engineering and environmental consulting firm, serving clients nationwide to deliver trusted environmental solutions.” Source: company website · checked Sep 5, 2026
12	UES Professional Solutions 64, LLCStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	31
	“Environmental Consulting and Engineering InControl Technologies was established in 1997 to provide high-end quality environmental consulting services to owners of commercial and…” Source: company website · checked Sep 5, 2026
13	Acorn International, LLCStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	22
	“Acorn International, LLC delivers environmental and social risk management consulting services to international industry and investors.” Source: company website · checked Sep 5, 2026
14	TGE Resources, INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	21
	Source: company website · checked Sep 5, 2026
15	Environmental Operational Solutions EosolutionsIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	19
	“At EOSolutions, we know you want your operations to stay in compliance.” Source: company website · checked Sep 5, 2026
16	ERC Environmental & Construction ServicesStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	18
	“ERC is a Professional Services Firm in Environmental Consulting and Construction.” Source: company website · checked Sep 5, 2026
17	Paradigm Consultants, Inc., A CMT CompanyIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	14
	“Paradigm Consultants, Inc.” Source: company website · checked Sep 5, 2026
18	SKA Consulting, L.PStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	13
	“SKA Consulting is a professional environmental engineering and consulting firm providing timely, innovative solutions to today’s environmental challenges.” Source: company website · checked Sep 5, 2026
19	PEI Consulting Group, INCStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	11
	“PEI Consulting Group, Inc.(PEI) is an employee owned full-service environmental consulting and engineering firm providing timely, innovative solutions to today’s environmental…” Source: company website · checked Sep 5, 2026
20	Pangea GeoscienceIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	11
	“Pangea Geoscience LLC offers a dedicated team with collectively more than 80 years of experience in integration of geology and engineering.” Source: company website · checked Sep 5, 2026
21	Cypress Environmental ConsultingStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	8
	“Cypress Environmental Consulting LLC (CEC) provides a broad range of environmental services including planning, site assessment, and permitting with a focus on regulatory…” Source: company website · checked Sep 5, 2026
22	3d MarinePartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	8
	“Part of Brookes Bell and providing the same high-quality level of experience and expertise, 3D Marine is a premier full-service consulting group experienced in all aspects of…” Source: company website · checked Sep 5, 2026
23	Corrigan Consulting INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	7
	“Since 1986, CCI has been providing specialized services in hazardous waste compliance, permitting, site investigations, and closures; underground storage tank removals and…” Source: company website · checked Sep 5, 2026
24	Disorbo Consulting, LLCPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	5
	“DiSorbo Consulting is now a part of Trinity Consultants.” Source: company website · checked Sep 5, 2026
25	AWA Environmental LLCStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	5
	“We are an environmental consulting firm with headquarters in Houston.” Source: company website · checked Sep 5, 2026

Showing 25 of 66 mining environmental consulting firms based in Houston, United States

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Mining environmental consulting firms based in Houston, United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

HoustonLargest hub · 66 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 66 companies.

How this list was built

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

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Houston, United States whose own description of what they do matches “mining environmental consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among mining environmental consulting firms, and records with no verified work email. Companies headquartered outside Houston are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 508 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Mining environmental consulting firms by metro in the United States

Mining environmental consulting firms in Houston66
Mining environmental consulting firms in Denver37
Mining environmental consulting firms in Austin32
Mining environmental consulting firms in Seattle32
Mining environmental consulting firms in New York27
Mining environmental consulting firms in San Diego27
Mining environmental consulting firms in Tampa26

Frequently asked

How many mining environmental consulting firms are there based in Houston, United States?

RevenueBase identified 66 mining environmental consulting firms headquartered in Houston, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

GSI Environmental INC, headquartered in Houston, tops this list with the largest team on record.

Which city has the most mining environmental consulting firms?

Houston leads with 66 headquartered companies, followed by Denver (37) and Austin (32).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 508 verified decision-maker contacts tracked across these 66 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 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.