Clients
FEDERAL
U.S. Army Corps of Engineers:
Baltimore, Chicago, Louisville, Nashville, New England, New Orleans, New York, Philadelphia, Memphis, Pittsburgh, and Sacramento Districts
and ERDC, Vicksburg, MS
Federal Bureau of Prisons- U.S. Environmental Protection Agency
- National Park Service
- Federal Highway Administration
STATE
- Connecticut Department of Transportation
New Jersey Department of Transportation- MassHighways
- Vermont Agency of Transportation
- Massachusetts Water Resources Authority
(MWRA) 
Massachusetts Department of Conservation and
Recreation (DCR)- New Hampshire Department of Environmental Services
- Wisconsin Department of Natural Resources
New York City Department of Environmental Protection
LOCAL
- Baltimore County, MD
- City of Cambridge, MA
- City of Chicopee, MA
- City of Springfield, MA
- City of Grafton, MA
Town of South Hadley, MA- City of Salem, MA
- Devens Enterprise Commission, MA
- City of Cincinnati, Ohio
- King County, WA
- New York City Department of Environmental Protection
- Louisville Municipal Sewer District, KY
- Town of Hamden, Connecticut
- South Central Connecticut Regional Water Authority
(New Haven, CT)
CORPORATE
- Target Corporation
- Amphenol Corporation
- Tennessee Gas Pipeline/El Paso Corporation
- GTE Sylvania
- Algonquin Gas Transmission Company
- Western Massachusetts Electric Co.
DESIGN FIRMS
HNTB- Michael Baker, Inc.
- MWH Americas, Inc.
ARCADIS- MACTEC
- SCS Engineers
- Camp Dresser McKee
- Fuller Mossbarger, Scott and May Engineers, Inc. (FMSM)
- SEA Consultants, Inc.
- Michael Van Valkenberg Associates
- Stephen Holl Architects
- HKT Architects
- Carol Johnson Associates
- Balmori Associates
- Arrowstreet Architects
NON-PROFITS
- Conservation Law Foundation
Ducks Unlimited- Trout Unlimited
- Center for Urban Watershed Renewal
- National Academy of Science
- Transportation Research Board
- International Erosion Control Association
ACADEMIA
- University of Iowa
Massachusetts Institute of Technology- University of Virginia
- University of Ohio
- University of California — Davis
Phillips Exeter Academy
