Columbia, MOGeolocation: 39.0069, -92.2823

The Columbia office opened in 1997, offering geotechnical and materials testing services. In 2000, environmental services were added, and in 2002 drilling services were added. Columbia is strategically focused on developing the rural Missouri markets, including providing services to each municipality and county in the region. The Columbia staff has grown to approximately 20 employees.

Key Projects

Callaway County Nuclear Power PlantGeolocation: 0, 0
AmerenUE's Callaway County Nuclear Power Plant was performing a feasibility study for its Construction and Operating License Application (COLA). As part of this permitting process, Rizzo Associates, Inc. selected Terracon to provide geotechnical borings and limited geotechnical engineering on this project. Over 80 borings ranging from depths of 41 to 350 feet (averaged 110 feet) were performed. Drilling was performed over four months using 9 drill rigs and 8 drill crews. The drilling operation was nearly continuous (7 days per week) with rotating 10 day on/4 day off shifts. Weather during…

Hurricane Deck BridgeGeolocation: 0, 0
Terracon performed Level I and Level III underwater assessments of four bridge piers and caissons on this 5 span steel truss bridge originally constructed in the 1930's. The bridge is located in Lake of the Ozarks which has a depth varying from 40 ft. to greater than 75 ft. deep. The petrographic examination scope included analysis of 10 concrete cores from four water piers both above the water line (obtained by Terracon, Missouri personnel) and below the water line (obtained by Terracon Cincinnati divers) to determine the extent and type of deterioriation in the piers as part of an…