About OEI

Client-Focused, Logic-Driven, Success-Oriented

How We Started

Rich Oller has always had an entrepreneurial spirit with a hands-on approach to life and in 1989, at his kitchen table, he had the idea to bring something new to the industry. Thus emerged Oller Engineering, Inc., a Water Resources and Environmental Engineering focused consulting firm built with a passion for our work, our clients, and our communities.

OEI Today

The same passion that started OEI is still felt in the company today. Our staff takes pride in our client relations, our sensible approach to projects, and our overall willingness to help others.

Looking Forward

We at OEI, aim to continue serving as our clients’ trusted advisors through integrity, intellect, and innovation. We are dedicated to improving ourselves as individuals and as a Team for the benefit of our clients.

Our Team