On June 1, 2015, The Catena Group joined Three Oaks Engineering, a Durham, North Carolina-based woman-owned engineering firm, making Three Oaks one of the largest natural resource consultants in North Carolina. More details can be found here.

Established in 1997, The Catena Group, Inc. is a full service environmental consulting company. We provide a full range of scientific and technical services for developing solutions to the environmental issues encountered by the public and private sectors. We are in business to provide high quality environmental services that are responsive to the needs of our clients at competitive costs.