CRE N Illinois Engineering firm Terracon acquires Downers Grove-based St. John-Mittelhauser Olathe, Kansas-based consulting engineering firm Terracon has acquired St. John-Mittelhauser & Associates, Inc. (SMA). This acquisition enhances Terracon’s environmental services offerings and expertise in the Upper Midwest region.Founded in 2007, SMA leverages decades of experience to deliver environmental consulting, investigation, remediation, data management and 3D visualization solutions to clients from its headquarters in Downers Grove, Illinois and offices in Hartford, Illinois, Rockford, Illinois and Indianapolis. SMA serves clients including real estate developers, state and local agencies, energy companies, insurance companies and industrial manufacturers.“SMA’s environmental consulting capabilities complement and align with our environmental service offerings in the Midwest and nationally,” said Gayle Packer, Terracon president. “Their expertise and depth of experience with clients in Indiana and Illinois enhances our presence in the region.”The company and its 31 employees, including geologists, engineers, scientists, field professionals, data analysts and administrative staff, will continue to serve clients locally as St. John-Mittelhauser & Associates, A Terracon Company.“We are proud of the strong client relationships we have built over the years and that our expertise and quality of services have led us to this opportunity,” said Ron St. John, PHG, CPG, co-founder and principal hydrogeologist at SMA. “Drawing on Terracon’s national network, we are able to offer greater resources and a broader range of services to our employees and clients.”The new acquisition is supported by Terracon’s existing offices in Glendale Heights, Illinois, Rockford, Indianapolis and St. Louis. SMA is Terracon’s sixth acquisition since the beginning of 2017.