- People
- Working Here
-
-
-
Student Internship Opportunities
Learn More »
-
-
- Safety (EHS&S)
Creating a Culture of Safety
Our team is dedicated to empowering team members with safety leadership and promoting a safe, secure and environmentally- friendly work environment in all facets of our business.
- Landowners
Find Landowner Representative in my State
Explore making part of your land, a legacy of resiliency for future generations.
- Vendors
Fast-track your path to being a potential RES supplier.
VENDOR APPLICATION
- Working Here
- Capabilities
- Our Solutions
- Our Approach
What is “Active Stewardship”?
At RES, we don’t build sites and walk away. We design them to thrive, and stick around until they do.
- Industries
- Videos
- Our Solutions
- Places
- Buy Credits
Buy Mitigation Credits
Impacts are sometimes unavoidable. For these situations, we offer ecological offsets in the form of mitigation credits.
- Find Projects
Find Projects
RES delivers resiliency, project by project. Understanding them is the best way to get to know us.
- Search States
Search by State
Keeping the ecological balance is an intensely local endeavor. See how we meet the challenge in your area.
- Nurseries
-
- Buy Credits
- About Us
- Who We Are
Restoration is part of the answer to creating a resilient world.
Learn more »
- Leadership Team
Meet our Leadership Team
- Acquisitions
We are growing the RES family.
We strengthen our team by bringing on respected teams of experts with local knowledge and experience, who share our vision of a resilient earth.
- News
RES in the News
Read the latest news about RES, our projects and our people.
- Who We Are
- Restoring at Scale
- Contact Us
Leadership Team > Mark O’Leary
About Mark O’Leary
States
Michigan, Wisconsin
Contact
D: 608.354.2617
Mark is a Client Solutions Manager and Ecologist based out of Wisconsin with more than 25 years of experience working in the ecological restoration and A&E industry. Mark joined RES in 2020 through the acquisition of Applied Ecological Services (AES), where he served multiple roles, including Principal Ecologist, Branch Office Manager, VP Consulting, and Account Manager. Mark has worked throughout the country as a consulting ecologist, where he has provided scientific and project leadership on ecological planning, design, mitigation, and permitting. He has designed and implemented numerous ecological restoration and mitigation plans for wetland, prairie, woodland, and savanna communities and has conducted hundreds of national resources assessments and wetland delineations. He uses this experience at RES to creatively facilitate solutions for clients and resolve conflicts among clients, regulators, and natural resources. Mark is heavily involved in water quality trading for water quality compliance, large-scale restoration, and green infrastructure.
Mark earned his BA in English from Miami University and his MS in Zoology from Southern Illinois University-Carbondale with an emphasis on wetland and wildlife ecology.