Company lists · Data refreshed September 2026

Top 10 Environmental risk assessment firms based in New York, United States

RevenueBase identified 35 environmental risk assessment firms headquartered in New York, United States as of September 2026 and tracks 301 professional contacts across them, including 98 with verified work emails. Houston is the largest hub.

This list covers environmental risk assessment firms headquartered in New York, 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, 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
35Companies
301Contacts tracked
98Verified emails
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The 10 largest environmental risk assessment firms based in New York, United States

Ranked by team size
Top 10 of 35 environmental risk assessment firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental risk 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-20082 contacts →

Partial evidence

“ALC provides a wide range of environmental services from testing and reporting on potentially unsafe or hazardous conditions (asbestos, lead paint, indoor air quality/mold, soil…”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 2026n/a43 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-1011 contacts →

Indirect evidence

“Ganey Science is a small business enterprise based in New York.”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceNew York, United StatesHQ checked Sep 19, 202651-20011 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
5Strong evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-509 contacts →

Strong evidence

“Lawrence Env LLC provides environmental due diligence and risk management consulting services to a broad spectrum of real estate clients.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-507 contacts →

Indirect evidence

“Headquartered in New York City, The CASA Group, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-506 contacts →

Partial evidence

“Tenen Environmental provides effective and real world solutions for its clients in the areas of environmental engineering, geology and hydrogeology and regulatory compliance.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
9Strong evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-101 contacts →

Strong evidence

“At Periconi, LLC, highly experienced attorneys work on behalf of real estate and corporate clients, and small-business owners, helping them limit environmental business risks.”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-101 contacts →

Partial evidence

environmental boutique firm offering the sophistication and experience of large NYC law firms at non-NYC rates.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 10 of 35 environmental risk assessment firms based in New York, United States

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Environmental risk assessment firms based in New York, United States at a glance

As of Sep 19, 2026
32.6%Verified-email coverage
8.6Average contacts per company
11-50Median size (employees)
188.6%Largest-city concentration · Houston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
12
51-200
5
5,001-10,000
1
10001+
1

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 35 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 risk 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 New York, United States whose own description of what they do matches “environmental risk 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 risk 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 risk assessment firms, and records with no verified work email. Companies headquartered outside New York 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, 98 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.

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 risk 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 risk assessment firms are there based in New York, United States?

RevenueBase identified 35 environmental risk assessment firms headquartered in New York, 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?

ALC Environmental, headquartered in New York, tops this list with the largest team on record.

Which city has the most environmental risk assessment firms?

Houston leads with 66 headquartered companies, followed by New York (35) and Seattle (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 98 verified decision-maker contacts tracked across these 35 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.

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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 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.