Jill Betts at a brownfield excavation at a mill pond site.

Whatever your challenge, we’ve got you covered.


Deep listeners. Straight talkers. Fast responders. That’s us.

We create a clean, healthy, safe environment one project at a time, enabling businesses and communities—and our neighbors—to thrive. We’ve earned our reputation as forthright, creative problem-solvers from a foundation of trust and teamwork fortified by decades of hard work, high standards and proven results. We put you first, taking time to understand your project’s unique requirements.

Our proven 3-step process:


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Expert Assessment

We listen. We find out
what matters to you.
And we observe, get the data.
Then we investigate and evaluate.



Custom Collaboration

We work with you to design
a solution that meets your specific needs,
with a straightforward roadmap,
budget and plan.



Excellence Delivered

With highest-possible standards,
we execute the right solution for you.
We get it done, so you can get back to business.

Bring it on.

The Port of Hood River has worked on various projects with this exceptional company for 15+ years. They are very knowledgeable, with broad experience in their field, and the Port trusts their work. They provide thorough reporting and expert understanding of complex regulatory processes, and they work hard to cooperate and communicate with the project team. We value our relationship with Coles and Betts Environmental Consulting and hope to work with them again.

—Anne Medenbach
Development and Property Manager, Port of Hood River

Rusty culvert with Mt. Adams seen through the end. Photo by Jill Betts


With our client-centered approach, technical expertise, strict project management standards and strong work ethic you can rest assured that your new plan of action is the right solution—one with a predictable schedule and price, without hidden costs.

What’s the challenge? We’re here to help.

Site Investigation and Cleanup

You know or suspect your property, leasehold or dream acquisition has been contaminated … read more.

Technical Review

You or your client are looking for proof that you or your tenants did not contribute to a … read more.


You hate sorting through regulations. Prioritizing permit samples and record keeping is … read more.

Property Transaction and Redevelopment

You’re concerned about contamination, or possible contamination, worried that your … read more.

See  Services

A neighboring gasoline station experienced a serious release of pollution upgradient from our property. Coles and Betts Environmental Consulting proposed and monitored the in-situ treatment program that was successful in restoring both the polluted gas station and our downgradient site. We found them to be highly professional, thorough, and efficient in methods and reporting.

—John S. Fujii
Manager, HTK Management, LLC

Brownfield remediation of a mill pond


The Northwest is our home, so our work is personal. When it comes to helping our neighbors, we’re proud of what we continue to achieve with our clients and community partners. Go to our Projects page for some examples of projects that Coles and Betts Environmental Consulting team members have tackled.

See  Projects


It takes teamwork to develop and implement the most effective, efficient (not to mention satisfying!) solutions with solid, trusting relationships earned over time. Coles and Betts Environmental Consulting is the result of the evolution of a collaboration that started in 1994, when Barbara and Dave Coles decided to join forces under their own banner.

Seasoned by over twenty years of deep and varied land-use planning, scientific research and project management, Barbara and Dave spent the next 15 years integrating their knowledge and establishing strong connections with their client base, service providers, and regulators until it was clear they had expanded beyond what they could do on their own.

Fortunately, their search for the right partner came to an end when a friend and colleague (a driller, as it happens) enthusiastically insisted Barbara and Dave meet geologist Jill Betts, who likewise had built a strong reputation and network of clients and partners. One get-to-know-you lunch in 2009 was all it took. Combining forces gave Coles and Betts Environmental Consulting an extensive network of professional associates. We also have a proven track record of cultivating relationships with other service providers that take a similar approach to customer service, resulting in pleased clients and regulators.

Meet  Team

Coles and Betts Environmental Consulting—as a company and as individuals—has provided us with the highest level of professional environmental consulting services multiple times. We have benefitted from their expertise and commitment to detail, honesty, industry connections, advocacy of our best interests, timely communications, and positive personal relationships.

—Jeb E. Bladine
President, Oregon Lithoprint, Inc.


Put our experience to work.

We may be out in the field, but we still want to hear from you.
Call us today or complete the contact form to email us.


Sampling of oil removed from underground tank.

Tell us about yourself.

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Tell us about your project to get the ball rolling.

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Investigating pond for contamination


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