Serving Maine, New Hampshire, Massachusetts, Connecticut, Rhode Island, & Vermont

info@rwg-a.com
207-286-8008

Our Principal Engineers and Management Team



Erik J. Wiberg, P.E.

Erik J. Wiberg, P.E.
President & Chief Geotechnical Engineer

Erik J. Wiberg, P.E.

Marc R. Grenier, P.E.
Vice President and Project Geotechnical Engineer

Erik J. Wiberg, P.E.

Matthew T. Grady, P.E.
Associate, Materials Engineer, and Materials Testing Manager

Professional Staff



Serena N. Pape
Geotechnical Engineer

Daniel E. Burgess
Geotechnical Engineer