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JOHNSON CITY, TN (WJHL) - The Tennessee Valley Authority has chosen a contractor to do the final phase of major repairs on Boone Dam.
TVA picked Treviicos-Nicholson Joint Venture, comprised of Treviicos South Inc. and Nicholson Construction Company, to build what is called an "underground cutoff wall".
TVA has said "it will be the final, major underground piece of the seepage remediation project before the reservoir refill phase begins."
The wall is part of a complex project to stop waterflow and internal erosion of Boone Dams earthen embankment.
"This project is about protecting the businesses, families and communities downstream and we look forward to working with Treviicos-Nicholson to maintain the safety of the downstream public and our workers while producing a quality repair," said TVA Principal Project Manager Sam Vinson.
"We wanted to share this good news with the public as soon as the procurement was complete and the contract was finalized. We continue to work towards completing the cutoff wall and begin restoring the lake to the normal operating guide by July 2022."
TVA said Treviicos South Inc. and Nicholson Construction Company are based in Boston, Massachussets and Canonsburg, Pennsylavia. TVA said the companies have partnered on other major dam projects.
Click here to watch News Channel 11 coverage of Boone Dam repairs - 3 years later.
Engineers discovered water seeping and eroding under the dam in October 2014. TVA announced plans to conduct a major repair project at a July 2015 meeting.
"Since that time the dam has been widened, hundreds of holes drilled and grouted, more than 200 monitoring instruments installed and 220,000 tons of rock placed on both sides of the dam to add stability to the earthen embankment," TVA said. "Workers are currently building a new laydown yard and employee parking lot in preparation for this next phase of construction."
TVA said it will release more details about the project at a "public information fair" on September 25th at Sullivan Central High School. "Details of that information fair will be sent out in next months Boone Dam newsletter and on Twitter @BooneRepair ," TVA said.
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