Employee Spotlight: 4 Team Members Earn New Professional Certifications

Here at Princeton Hydro, we are dedicated to protecting our natural resources and changing our ecosystems, quality of life and communities for the better. As part of that, our team members are committed to continuing to learn new technologies, staying ahead of regulatory changes, and expanding their knowledge.

Today, we are proud to put the spotlight on four team members who recently achieved new professional certifications.

Senior Ecologist Michael Rehman PWS and Fluvial Geomorphologist Paul Woodworth are now Certified Ecological Restoration Practitioners (CERP) through the Society for Ecological Restoration (SER).

SER’s CERP program encourages a high professional standard for those who are designing, implementing, overseeing, and monitoring restoration projects. Only senior level practitioners who have achieved the knowledge requirements and have greater than five years of full-time experience with restoration can be certified. Michael is one of 15 people to hold a CERP certification in New Jersey, and  Paul is one of two people to be CERP certified in Connecticut.

Since he began working with Princeton Hydro in 2008, Paul has supported over 50 river restoration projects involving the removal of over 35 dams and barriers along the east coast. As a fluvial geomorphologist, he assesses streams to determine channel evolution processes and predict geomorphic responses to restoration actions.

This certification is a culmination of 25 years of hard work from undergrad, early professional jobs, grad school, and over 10 years of restoration work at Princeton Hydro. I had little idea that the course work I chose in undergrad was steering me toward a career in restoration that I didn’t even know existed at the time. SER has emerged as a top-notch organization with a global perspective on the proactive restoration of ecosystems and the sustenance of human communities. I’m excited about applying SER measures to our projects.

Michael has worked with Princeton Hydro since 2006. He is an expert in wetland permitting and delineations for USACE, NJDEP, and PADEP projects; wetland mitigation projects; habitat assessments; threatened and endangered species investigations; analysis of terrestrial/wetland ecosystems; municipal EIS/reviews and water quality/land use issues.

“Earning the CERP is a big achievement, and I’m proud to join the international network of credentialed professionals. I’m passionate about the restoration and enhancement of natural resources, and I have seen the transformation of brownfields to greenfields firsthand. Through the design and implementation of creative, nature-based solutions, my work will help advance the mission of SER and the field of ecological restoration.”

CERP is designed to ensure that certified practitioners are up to date on the new and important developments in the field of ecological restoration – both from the scientific and the practical perspectives. The certification is valid for 5 years after approval, and recertification requires that CERPs earn a minimum of 50 continuing education credits within the five-year period since they were last certified.


Both Emily Bjorhus and Robert George earned the Professional Wetland Scientist (PWS) certification through the Society of Wetland Scientists program.

The certification program was developed to meet the needs of professional ecologists, hydrologists, soil scientists, educators, agency professionals, consultants, and others who practice wetland science. This program is aimed at serving the public’s need to identify qualified individuals to assess and manage wetland resources around the world.

The PWS certification is awarded to those meeting specific educational and experience requirements: Minimum degree requirements are BA/BS, with course distribution of 15 semester hours each in biological and physical sciences and 6 hours in quantitative areas plus an additional 15 semester hours in wetland-related courses. In addition to comprehensive training in wetland science, a PWS is expected to have professional experience of at least five years as a wetland scientist, demonstrating the application of current technical knowledge dealing with wetland resources and activities.

As an Environmental Scientist, Emily Bjorhus works on a wide range of projects from flood risk management to wetland mitigation to stream restoration. She specializes in wetland and stream ecology and environmental permitting and compliance. Emily joined the Princeton Hydro team in 2016.

“I’m very proud of my Professional Wetland Scientist certification. I’ve been working in wetlands for the past six years and have a deep love of botany that makes my job a joy. I know this certificate will allow me to better serve the public’s need to have qualified individuals assess and manage wetland resources.”

Robert is a Project Manager in the Natural Resources Practice Area who provides technical expertise in environmental toxicology, wetland ecology, wildlife surveys, permitting and compliance for a variety of federal, state, and municipal ecological restoration projects. Robert has over twelve years of experience as a natural scientist.

“Certification as a Professional Wetland Scientist was important for me because this credential demonstrates to clients and local, state, and federal regulatory agencies that I am an experienced practitioner of wetland science with an educational and professional background that satisfied the rigorous standards of the Society of Wetland Scientists.”

Congratulations to Emily, Michael, Paul and Robert! 

For more information about SER and the CERP program, visit ser.org. To learn more about the Society of Wetland Scientists’ PWS program, visit sws.org. If you’re interested in learning more about the wide variety of engineering and environmental services Princeton Hydro offers, go here: princetonhydro.com/services.

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