Offices

In 2015, Terracon announced the ownership of two soils testing and materials laboratories in the Upper Midwest. The offices, located in Vernon Hills, Ill., and Green Bay, Wis., were operated by AECOM, and previously owned by STS Consultants, Ltd. The Vernon Hills facility is one of the few commercial laboratories which offers rock mechanics testing capabilities. The laboratory is accredited by the National Voluntary Laboratory Accreditation program (NVLAP), AASHTO Materials Reference Laboratory (AMRL), and is validated with the U.S. Army Corps of Engineers (USACE).