Eriksson Engineering Associates Ltd

Patrick Engineering is a consulting firm that specializes in engineering, building design, technology, planning and construction management. The company s multi-disciplinary team addresses infrastructure needs of public and private sector clients throughout the world. It provides services to the transporation, airport, utility power system, industrial infrastructure, environmental, mining, building and system design markets. Patrick s capabilities include roadway improvements, bridge design, rail yard terminal enhancements, power plant engineering, structural analysis, wastewater treatment plants and electrical vaults. The Engineering News Record has included Patrick in its ENR Top 500 for more than 12 years, and the American Society of Civil Engineers and American Institute of Architects have honored the company with design awards. Patrick Engineering maintains offices throughout the United States.

Material Solutions Laboratory Corp (MSL) is a professional civil engineering firm based in Elk Grove Village, Illinois, dedicated to providing excellent service and engineering expertise in the construction industry. Established in 2007, the company has quickly become one of the top materials testing firms in Northern Illinois, recognized for its consistent accuracy and timely report submissions. MSL is certified as a Disadvantaged Business Enterprise (DBE) by the Illinois Department of Transportation and offers comprehensive field and laboratory materials testing services, alongside engineering consulting. Their expertise encompasses soil, asphalt, concrete, and structural steel testing, performed by a team of highly experienced technicians and engineers. Generated from the website

Gewalt Hamilton Associates is a professional engineering firm that was formed in 1981 by Robert Hamilton and David Gewalt. Its municipal engineering services include water distribution, traffic engineering, storm and sanitary sewer design, waste water collection and transmission, and roadway design, maintenance and rehabilitation. The company offers site planning, traffic access and circulation, storm water management, utility location, permitting and construction administration services. It conducts topographic, stream, hydrographic, control, boundary and land title surveys. The firm s construction administration services include construction observation, erosion reporting, field report and record drawings preparation, shop drawing review, conduction of final inspections and assistance in final acceptance and approvals. In addition, it offers soil erosion and sediment control, natural area management, endangered and threatened species consultation, and wetland delineation, permitting and mitigation services. Gewalt Hamilton Associates has corporate headquarters in Vernon Hills, Ill.