Our Management Team

James B. Russell, P.E. Principal / Senior Project Manager Mr. Russell has over 30 years of experience on a wide variety of civil, geotechnical, and environmental engineering projects. His expertise includes deep and shallow foundations, retaining walls, earth and masonry dams, temporary sheeting and shoring, marine/waterfront improvements, ground improvement, and conducting geotechnical investigations and preparing geotechnical data/design study reports for heavy civil, industrial, and major transportation related projects.

David J. Arpin, P.E. Principal / Project Manager Mr. Arpin has over 9 years of experience on a variety of geotechnical, marine / waterfront, civil, dam, structural, and environmental engineering projects. His design experience includes analysis and design of dams, retaining walls, support of excavation systems, pile-supported foundations, seawalls and bulkheads, and dewatering systems.




Gregory J. Coren, P.E. Principal / Project Manager Mr. Coren is responsible for preparing project reports, managing project documentation, creating and editing Computer-Aided-Design drawings, performing project calculations, data analysis and review, and interacting with clients. He has also been intimately involved with updating and helping to execute RTG’s marketing plan, co-wrote and implemented its Employee Health and Safety Program, and serves as the firm's Contract Manager.