FEDERAL AGENCIES

United States Army Corps of Engineers
United States Fish and Wildlife Service
Federal Aviation Administration
Federal Emergency Management Agency
United States Environmenal Protection Agency
United States Environmental Protection Agency Region 5
United States Department of Transportation
United States Geological Services
US Army Corps of Engineers Chicago District

STATE AGENCIES

Illinois Department of Transportation
Illinois State Toll Highway Authority
Illinois Environmental Protection Agency
Illinois Department of Natural Resources
Illinois Commerce Commission
Illinois Department of Public Health
Illinois Historic Preservation Agency
National Resources Conservation Service
Northeastern Illinois Planning Commission

COUNTY AGENCIES

Lake County Stormwater Management Commission
Lake County Division of Transportation
Lake County Soil and Water Conservation District
Cook County Highway Department
North Cook County Soil and Water Conservation District
Will – South Cook Soil & Water Conservation District
Will County Department of Highways
Will County Stormwater Management Committee
McHenry County Highway Department
McHenry County Stormwater Management Committee
McHenry County Soil & Water Conservation District
DuPage County Division of Transportation
Kane-DuPage Soil & WaterConservation District
Kane County Division of Transportation
Kane County Stormwater Management Committee
Metropolitan Water Reclamation District of Greater Chicago

PROFESSIONAL ORGANIZATIONS

American Association of State Highway and Transportation Officials
American Consulting Engineers Council
American Institute of Architects
American Public Works Association
American Society of Civil Engineers
American Society of Public Administrators
American Water Works Association
Illinois Road Builders and Transportation Association
Institute of Transportation Engineers
National Society of  Professional Engineers
The Society of Wetland Scientists
Society of  Women Engineers

These sites are in no way endorsed by Gewalt Hamilton Associates, Inc. They are all separate from our company and are for informational/useful purposes only. If you have questions or comments regarding them, please contact the organization itself.