AG Edwards
Airgas Specialty Products
Alberici Constructors
Ameren
America's Convention Center/Edward Jones
Archdiocese of St. Louis
Armeta Cotton
Armstrong Teasdale
Army Corp of Engineers Louisville District
AutoZone / CEI
Balke Properties
BJC Facilities
BJC Health System
Black & Veatch
BSI Contractors, Inc.
Burns & McDonnell
Casino Queen
Crawford Bunte Braimeier
CDOA Chicago Dept. of Aviation
CDOT
CH2M Hill
Charter Communications
City of Arnold
City of Berkeley
City of Bridgeton
City of Chicago
City of East St. Louis
City of Ferguson
City of Indianapolis
City of Jefferson City
City of Lockport, IL
City of Maplewood
City of Marion, IL
City of Milwaukee, WI
City of Moline
City of Noblesville, IN
City of Northwoods
City of O'Fallon
City of Overland
City of Pagedale
City of Richmond Indiana
City of Rock Hill
City of Rogers, AR
City of Salem, IL
City of St. Charles
City of St. George, Utah
City of St. Louis BPS  STL Lambert Airport
City of St. Louis Police Headquarters
City of Tinley Park, IL
City of University City
Clayco Construction
Crawford, Murphy, Tilly
Community Program Development Corp.
Corps Of Engineers
County of Rogers OK
Defense Mapping Agency
Department of Veterans Affairs
East St. Louis
East St. Louis Housing Authority
East St. Louis School District 189
East-West Gateway Coordinating Council
Environmental Operations
Ferguson Florissant School District

Fred Weber, Inc.
Gateway Constructors
George Butler Associates
Grace Hill Settlement House
Great Rivers Greenway District
Habitat for Humanity of STL
Hazelwood School District
HNTB Architects
HOK
HySpan Systems, Inc.
IL Department of Natural Resources
IL State Toll Highway Authority (ISTHA)
Illinois Department of Transportation
Imagine Schools
Independent Concrete Pipe Company
Indiana DOT
Jacobs Engineering
Jennings School District
Kozeny Wagner, Inc.
K-Plus Engineering
Kucera
Kudnra
Lake County, IL
Lambert-St. Louis International Airport
Land Reutilization Auithority
LCRA St. Louis County
Metro
Metrolink
Metropolitan Park & Recreation Dist.
Metropolitan Sewer District
MoDOT
Mid America Airport
Missouri American Water Co.
Missouri Baptist Medical Center
Missouri Botanical Garden
Missouri Department of Conservation
Missouri Department of Natural Resources
Missouri Highways and Transportation Commission
Missouri Pacific Railroad
MKA Associates LLC
Modjeski and Masters
Monsanto
National Geospatial-Intelligence Agency (NGA)
Normandy School Board
North Park Partners
Northern Concrete Pipe Co., a Michigan Corporation
O'Hare Modernization Program          Old Navy Stores
Olivette MB Church
One Rain
ONYX Development
Orin Group
P.T. Bosley Senior Estates
Pacific Construction Services
PAR Electric & Patrick Engineering
Paradowski Creative
PARIC
Parkway School District
Parsons
Patrick Engineering Inc.
Pattonville School District
PB Americas, Inc.

Peace Villa Senior Living Center
PE-Engineers
Pelican Group
Pinnacle Entertainment
Riverview Gardens Schools
Rock Community Fire District
Rockwood School District
Ross and Baruzinni
SAIC-Science Applications Internat'l Corp.
Sanborn Map Company, Inc.
SCI Engineering, Inc.
Scott Air Force Base
Scurlock Industries, Inc.
Shaw Environmental (formerly FUSRAP)
Simms Building Group
Singh & Associates
Singh/ABNA JV
SIUE
SLPS-St Louis Public Schools
SSM Healthcare
St. Louis Airport Authority
St. Louis Board of Education
St. Louis City Board of Education
St. Louis Community College
St. Louis Community Credit Union
St. Louis County
St. Louis County Economic Council
St. Louis Development Corporation
St. Louis Housing Authority
St. Louis Police Department
St. Louis School District
St. Louis Science Center
St. Louis University
St. Louis, City of - BPS
St. Mary's High School
St. Mary's Hospital
State of Michigan
STL Economic Council/GRG/City of Wellston
Surdex Corporation
Tarlton Corporation
Teng & Associates, Inc.
Transystems - Pittsburgh
U.S. Army Engineering District - St. Louis
U.S. Army Engineering District - Huntsville
U.S. Army Engineering District - Memphis
University City Public Works Dept.
University City School District
University of Missouri-Columbia
University of Missouri-Rolla
University of Missouri-STL
URS Corporation
Veterans Administration
Village Academy School
Village of Bel-Ridge
Washington Group
Washington University
West County Fire District
Woolpert, LLP                                      Zak Companies