Company lists · Data refreshed September 2026

Top 25 Environmental impact assessment firms based in Calgary, Canada

Name: Environmental impact assessment firms based in Calgary, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 80 companies tracked

RevenueBase identified 80 environmental impact assessment firms headquartered in Calgary, Canada as of September 2026 and tracks 1,354 professional contacts across them, including 723 with verified work emails. Calgary is the largest hub.

This list covers environmental impact assessment firms headquartered in Calgary, Canada, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

80Companies

1,354Contacts tracked

723Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest environmental impact assessment firms based in Calgary, Canada

Ranked by team size

Top 25 of 80 environmental impact assessment firms based in Calgary, Canada, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental impact assessment firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Matrix Solutions INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	501-1,000	274 contacts →
	Partial evidence “Onterris (formerly Matrix Solutions Inc.) is one of Canada’s leading providers of environmental consulting and engineering services.” Source: RevenueBase Database · checked Sep 19, 2026
2	Millennium EMS Solutions LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	170 contacts →
	Partial evidence “Millennium EMS Solutions Ltd.(MEMS) is an employee-owned consultancy, providing environmental, health and engineering services across Western Canada since 1998.” Source: RevenueBase Database · checked Sep 19, 2026
3	Summit	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	153 contacts →
	Partial evidence “Summit, An Earth Services Company, is a professional environmental consulting and services company serving the oil and gas, energy and utilities, resources and mining and…” Source: RevenueBase Database · checked Sep 19, 2026
4	Synergy Land And Environmental	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	81 contacts →
	Partial evidence “SYNERGY LAND AND ENVIRONMENTAL SERVICES is an expanding progressive land and environmental consulting firm with a special interest in oil and gas, forestry, mining, energy, and…” Source: RevenueBase Database · checked Sep 19, 2026
5	Maskwa Environmental Consulting LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	60 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
6	GCL Environmental LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	42 contacts →
	Partial evidence “GCL Environmental Ltd.(GCL) is a results-driven environmental consulting firm.” Source: RevenueBase Database · checked Sep 19, 2026
7	Clear Environmental Solutions	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	35 contacts →
	Partial evidence “Clear Environmental Solutions ("Clear") is an environmental consulting firm focused on providing waste, water and environmental liability management solutions throughout Western…” Source: RevenueBase Database · checked Sep 19, 2026
8	Clearbakk	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	31 contacts →
	Partial evidence “ClearBakk has earned a reputation for bringing innovative solutions and designs to solve unique industrial, environmental, and regulatory challenges in various sectors such as…” Source: RevenueBase Database · checked Sep 19, 2026
9	Earthmaster Environmental Consulting	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “Earthmaster Environmental Consulting has been serving clientele domestically and internationally since 1998, providing environmental consulting and management services including…” Source: RevenueBase Database · checked Sep 19, 2026
10	Tera Environmental Consultants	Partial evidence	Calgary, CanadaHQ checked Sep 19, 2026	201-500	28 contacts →
	Partial evidence “TERA Environmental Consultants was a mid-sized, environmental consulting firm formed in 1983 that provided environmental consulting services for the energy sector.” Source: RevenueBase Database · checked Sep 19, 2026
11	Equilibrium Environmental INC	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “We're hiring!” Source: RevenueBase Database · checked Sep 19, 2026
12	AJM Environmental INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	26 contacts →
	Partial evidence “AJM Environmental focuses on providing fit-for-purpose solutions that simplify environment and regulatory challenges to promote economic growth and environmental stewardship.” Source: RevenueBase Database · checked Sep 19, 2026
13	Prospect Land Environmental	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Brock Campbell and John Hagen started Prospect Land in 2006, with a vision to operate a full-service land company.” Source: RevenueBase Database · checked Sep 19, 2026
14	ASE Services Alberta Safety & Environmental Services LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial evidence “Alberta Safety & Environmental Services is a fully integrated environmental health, safety and hygiene company with several years of professional industry experience.” Source: RevenueBase Database · checked Sep 19, 2026
15	Applied Aquatic Research Ltd. AAR Environmental Services	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Applied Aquatic Research Ltd.(AAR) was incorporated in Alberta in 1996 and has provided aquatic resource inventory and mitigation planning support to industry, municipalities, and…” Source: RevenueBase Database · checked Sep 19, 2026
16	ELM INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “ELM is the ready partner you want on your team when managing environmental liabilities.” Source: RevenueBase Database · checked Sep 19, 2026
17	Baseline Water Resource INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	1-10	10 contacts →
	Partial evidence “Baseline Water Resource Inc.(Baseline Water), with head office in Calgary, Alberta was incorporated in 2006 to provide professional water resource and environmental consulting…” Source: RevenueBase Database · checked Sep 19, 2026
18	Envirotech Engineering Corp	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	1-10	10 contacts →
	Partial evidence “Envirotech Engineering is a Calgary based company providing a broad range of Environmental Consulting, Project Management & Regulatory Compliance services.” Source: RevenueBase Database · checked Sep 19, 2026
19	Micone Consulting INC	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “MICONE Consulting Inc.(MICONE) is a multi-disciplinary firm of experienced professional engineers and scientists.” Source: RevenueBase Database · checked Sep 19, 2026
20	Base Land & Environmental LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “The BASE Land & Environmental team has decades of experience providing Land & Environmental services to sectors including Natural Resources, Energy and Utilities, Transportation…” Source: RevenueBase Database · checked Sep 19, 2026
21	Terex Environmental Group	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Terex is a leading Canadian environmental consulting firm providing technical guidance for environmental compliance.” Source: RevenueBase Database · checked Sep 19, 2026
22	Environmental Diagnostics INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Environmental Diagnostics Inc is an environmental services company based out of 5050 106 Ave SE, Calgary, Alberta, Canada.” Source: RevenueBase Database · checked Sep 19, 2026
23	Arletta Environmental Consulting Corp	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “Arletta Environmental Consulting Inc.” Source: RevenueBase Database · checked Sep 19, 2026
24	Cirrus Environmental Services INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “Cirrus brings together four primary areas of professional experience, expertise and technology, and applies it to complex contaminated sites: Path to Closure, Site Assessment and…” Source: RevenueBase Database · checked Sep 19, 2026
25	Ecosis LTD	Indirect evidence	Calgary, CanadaHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Sustainable.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: environmental impact assessment firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names environmental impact assessment firms.
Partial evidence: Its own public description names part of environmental impact assessment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental impact assessment firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 80 environmental impact assessment firms based in Calgary, Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 723 reachable decision-makers.

Free signup · no credit card

View the full list →

Environmental impact assessment firms based in Calgary, Canada at a glance

As of Sep 19, 2026

53.4%Verified-email coverage

16.9Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Calgary

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole Canada list rather than for Calgary, so it is reported there. Company counts and contact totals on this page are exact for Calgary, over 80 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 environmental impact assessment firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Calgary, Canada whose own description of what they do matches “environmental impact assessment firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names environmental impact assessment firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among environmental impact assessment firms, and records with no verified work email. Companies headquartered outside Calgary 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 its RevenueBase Smart Search 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, 723 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 19, 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.

Environmental impact assessment firms by metro in Canada

Environmental impact assessment firms in Calgary80
Environmental impact assessment firms in Toronto33
Environmental impact assessment firms in Vancouver33
Environmental impact assessment firms in Edmonton29
Environmental impact assessment firms in Montreal25

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names environmental impact assessment firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many environmental impact assessment firms are there based in Calgary, Canada?

RevenueBase identified 80 environmental impact assessment firms headquartered in Calgary, Canada 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?

Matrix Solutions INC, headquartered in Calgary, tops this list with the largest team on record.

Which city has the most environmental impact assessment firms?

Calgary leads with 80 headquartered companies, followed by Toronto (33) and Vancouver (33).

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 723 verified decision-maker contacts tracked across these 80 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 80 environmental impact assessment firms based in Calgary, Canada. Start with a free account, no credit card.

Download this list →

Related lists

Environmental impact assessment firms by geography

Browse the directory

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 Smart Search, 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.