Trihydro is an engineering and environmental consulting firm committed to providing effective solutions. We approach each project as an opportunity to partner with our clients and build trust based upon successful outcomes. With project experience extending back to 1984, our professional engineers, geologists, scientists, designers, and regulatory experts understand how to take a strategic vision, turn it into a practical plan or design, and move it through project delivery.

Solutions you can count on

We offer comprehensive environmental services, engineering expertise, and technology solutions.
We focus on how each provided service factors into the bigger picture, so our solutions fully integrate into our clients' overall visions.

Our services

People you can trust

Trihydro has 500 people dedicated to service excellence. Our mid-size means
we have the expertise and manpower to provide project solutions, while still being small
enough to prioritize our individual clients' needs.

Our team

A cultural code

Trihydro's corporate code of conduct is based on a book titled Cowboy Ethics, What Wall Street Can Learn from the Code of the West by James P. Owen. The Code of the West has 10 tenets, and in 2017, Trihydro added one more: "Leave it better than you found it." Our cultural code underpins how we approach projects, relationships, and challenges.

code of the west

moving INDUSTRIES forward

The environmental and engineering services we provide benefit multiple industries. While the types of services we offer may be similar, each industry's challenges are unique. Trihydro is committed to understanding each specific client to develop specific, fit-for-purpose solutions.

industries

news & resources

EPA Issues Final MCLs for PFAS: Get Ready for Compliance

As of April 10th, 2024, the EPA has issued final Maximum Contaminant Levels (MCLs) for six per- and polyfluoroalkyl substances (PFAS). The final rule aims to place further controls on PFAS as outlined EPA’s Action Plan and Roadmap, which together aim to better prevent and manage human health and environmental impacts.

How EPA's Super Emitter Program Affects Oil & Gas Facilities

With nearly half of methane emissions stemming from a small fraction of sources in the oil & gas industry, we dive into EPA's new Super Emitter Program and how it will impact the industry.

PFAS Analytical Method 1633: The Next Generation of PFAS Sampling & Analysis

Learn about the recent advancements in PFAS analytical methods including Method 1633 and other recent methods developed to address PFAS in multiple matrices, such as on plastics and in the air.

EPA’s Risk Management Program (RMP) – Final Rule

The EPA's Risk Management Program (RMP) is now finalized. EPA RMP rule amendments include regulatory requirements and deadlines that facilities using hazardous substances need to be aware of.

EPA Proposes to List 9 PFAS as Resource Conservation and Recovery Act (RCRA) Hazardous Constituents

The US EPA has proposed listing 5 additional PFAS (PFNA, PFHxS, PFDA, PFHxA, PFBA) as Hazardous Constituents under Resource Conservation and Recovery Act (RCRA).

EPA Issues Update on PFAS Strategic Roadmap

The EPA has published the 2023 Annual Progress Report (2023-APR) to provide updates on the progress made in implementing the Roadmap. In this article, we summarize key points from the 2023-APR, including accomplishments and expectations.

EPA’s Proposed Fenceline Monitoring Requirements for Synthetic Organic Chemical Manufacturing Industry (SOCMI) and Group I and II Polymers and Resins Industries

With a final rule due any day now, learn more about the fenceline monitoring requirements and what affected facilities can do to prepare.

In First Update Since ’87, EPA Proposes New Source Performance Standards for Volatile Organic Liquid

We review key changes included in EPA's proposed NSPS Subpart Kc.

EPA Issues New TSCA PFAS Reporting Rule

We dig into the EPA's brand new TSCA PFAS reporting and recordkeeping rule. Learn more about compliance considerations.

Firefighting Foam & PFAS: AFFF Replacement

While AFFF products containing PFAS are reliable for firefighting, growing concerns over PFAS in the environment have forced a fresh look into the risk-reward calculation related to AFFF use. Learn more about AFFF and potential alternatives such as fluorine-free foams.