JOHNSON CITY, TN (WJHL) – The Tennessee Valley Authority reports that phase one of the Boone Dam project is finished.
The initial sinkhole discovered in October 2014 has been repaired and drainage improvements and construction of a new control building parking area are complete, according to TVA officials.
Officials said they did a final walkthrough on repairs and downstream improvements on Monday.
Crews installed at the site of the sinkhole a piezometer, seen in the attached photo, that measures the pressure of groundwater. This will allow TVA crews to continuously monitor any movement in the area.
Exploratory drilling and grouting is ramping up on the earthen embankment. Overnight crews arrived Monday “signaling the beginning of the 24 hour-a-day operations”, according to the TVA.