Thomas Kahl

GEI Consultants, Inc. provides engineering, environmental, and ecological consulting services. It also provides geotechnical, water resources, environmental, and ecological science, and engineering consulting services. The company was founded in 1970 and is headquartered in Woburn, MA.

Hill International, Inc. provides project management and construction claims consulting services. The firm's services include: construction management, project management, program management, project management oversight, estimating & cost management, facilities management, project monitoring, troubled project turnaround, commissioning, project labor agreement consulting, project advisory and resiliency & disaster recovery. The company was founded by Irvin E. Richter in 1976 and is headquartered in Philadelphia, PA.