Oates Associates: Engineering

City of Alton
City of Arnold
Abandoned Mined Lands Reclamation Council
Bond County
City of Belleville
City of Carlinville
Village of Caseyville
City of Chesterfield
Collinsville Area Recreation District
Collinsville Community Unit School District #10
Collinsville Township
City of Columbia
City of Collinsville
Belleville Township High School District #201
Damiansville Elementary School District #62
Village of East Alton
Edwardsville Township
EGHM Foundation
Edwardsville Historical Preservation Community
Edwardsville Community Unit School District #7
City of Edwardsville
East-West Gateway Council of Governments
City of Fairview Heights
Gateway Center
Village of Glen Carbon
Great Rivers Greenway District
City of Highland
Illinois American Water
IL Capital Development Board
IL Department of Natural Resources
IL Department of Transportation
Illinois Historic Preservation Agency
Illinois State Toll Highway Authority
Iowa Department of Agriculture & Land Stewardship
Jefferson County
City of Lake Saint Louis
City of Lebanon
Lewis & Clark Community College
Madison County Highway Department
Madison County Transit District
City of Maplewood
Village of Marine
City of Maryland Heights
City of Mascoutah
Metropolitan St. Louis Sewer District
Monroe County Highway Department
City of Mt. Vernon
City of O'Fallon, Illinois
O'Fallon Road District
O'Fallon Township
O’Fallon Township High School District #203
Pin Oak Township
The Principia
Southern Illinois University Edwardsville
City of St. Charles
St. Charles County Highway Department
St. Clair County Highway Department
St. Clair Township
St. Clair County Soil & Water Conservation
Village of St. Jacob
St. Louis City Board of Public Service
Southwestern Illinois Development Authority
City of Sunset Hills
Village of Twin Oaks, Missouri
City of University City
U.S. Fish & Wildlife Service
Venice Community Unit School District #3
City of Wildwood
City of Webster Groves
Village of Winnetka
City of Wood River
Washington University in St. Louis
Whiteside School District #115