Terracon, 870 40th Ave, Bettendorf, IA 52722, US

Founded in 1913, Stanley Consultants, a subsidiary of Stanley Group, provides engineering, environmental, and construction management services worldwide. The company serves a wide variety of markets, including education and health care, industrial, power and energy, environmental, municipal, land development, international, and federal and state governments. Its services include building expansion and renovation, solid waste management, power generation and distribution, biological resources studies, ecological risk assessment, flood protection and control, design-build engineering, and technical management of projects. The company has completed more than 21,000 projects throughout the United States, and in over 90 countries worldwide. Stanley Consultants is headquartered in Muscatine, Iowa, and has offices in Austin, Texas, Baton Rouge, La., Boise, Idaho, and Las Vegas, Minneapolis, Salt Lake City, Chicago, Denver, and Phoenix.