Comcast
Arcadis
Baxter & Woodman, Inc.
Christopher B. Burke Engineering, Ltd.
HBK Engineering, LLC
Insurance Program Managers Group (IPMG)
Lamp Incorporated
Ottosen DiNolfo Hasenbalg & Castaldo, Ltd.
Prescient Solutions
SAFEbuilt
Thomas Engineering Group, LLC
AT&T
BMO Harris Bank N.A.
Elevator Inspection Service Company, Inc.
HR Green, Inc.
LRS
Nicor Gas
Patrick Engineering, Inc.
Robinson Engineering, Ltd.
The Inland Real Estate Group
Trotter & Associates, Inc.