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

Gary is a distinguished figure in the environmental remediation industry, serving as the Founder and Managing Partner of Tersus Environmental, LLC, headquartered in North Carolina. Additionally, he holds the position of Director at Tersus Environmental Limited, based in Ireland. Armed with a bachelor's degree in chemical engineering from North Carolina State University, Gary boasts registrations as a Professional Engineer in North Carolina, Virginia, and Florida, reflecting his commitment to excellence and regulatory compliance.

With an impressive career spanning 40 years, Gary has been at the forefront of developing and implementing cutting-edge technologies for in situ remediation of contaminated soil and groundwater. His expertise extends globally, having undertaken projects in North America, South America, Europe, Asia, and Africa. Gary's passion lies in leveraging sustainable green technologies to address environmental challenges, particularly in groundwater and soil restoration.

A pioneer in the field of bioremediation and environmental consulting, Gary commercialized EDS-ER™ in 2011, a groundbreaking water-mixable vegetable oil-based organic substrate. This product has become widely recognized as a lasting source of carbon and hydrogen for enhanced reductive dechlorination and various bioremediation processes. Gary's influence extends beyond product development; he is the author of Design Tools for in situ bioremediation, contributing significantly to advancing industry standards in estimating substrate application rates.

Gary's intellectual contributions are underscored by his authorship of four U.S. Patents related to reductive bioremediation and in situ chemical reduction of soil and groundwater. Notably, he is the lead author of US Patent 11,577,231 B2, titled "Enhanced Reduction Bioremediation Method Using In-Situ Alcoholysis." This patent demonstrates his innovative approach, focusing on transesterification of vegetable oils to enhance the formation and distribution of crucial electron donors for anaerobic reductive bioremediation. Beyond his accomplishments, Gary has eight pending patent applications, solidifying his commitment to pushing the boundaries of remediation technologies for groundwater contaminants.