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Our Team

David F. Alden, M. Sc., P.E. (NC)

Manager, Technical Services

David is focused on the remediation of complex soil and groundwater sites impacted by non-aqueous phase liquids.

Gary M. Birk, P.E. (NC, VA, & FL)

Managing Partner

Gary is a founder and Managing Partner based in North Carolina with forty years of experince in soil and groundwater remediation.  

Sherri Scott

Manager, U.S. Business Development

Sherri is Manager of Business Development for the U.S. focused on customer care and business development.

In Depth ...

Tersus has established a strong track record of delivering exceptional client service by attracting a team of innovative scientists, engineers, and customer care professionals. With extensive experience and expertise, we specialize in providing cutting-edge applications of both established and emerging scientific and engineering technologies. Our associates and partners have collectively undertaken numerous in situ remediation projects worldwide, addressing various contaminants and subsurface conditions. Notably, all our engineers are professionally registered, with many boasting over three decades of hands-on experience in soil and groundwater remediation.

Committed to advancing industry standards, our technical associates actively contribute their time to the Interstate Technology and Regulatory Council (ITRC), a collaborative platform dedicated to overcoming barriers to the adoption of innovative environmental technologies. Additionally, they have authored chapters in books on remediation, further demonstrating their expertise in the field. Through this involvement, we strive to drive down compliance costs and optimize cleanup effectiveness for the benefit of all stakeholders.

Clients consistently choose Tersus for our proven ability to provide sound advice, expert recommendations, and high-value solutions. Why not capitalize on our wealth of experience and invaluable insights for your upcoming remediation project?