Underwater inspections determined that 19 of 24 spillway block sections were subjected to years of erosion. UCC provided skilled divers and specialized underwater tooling to remove the damaged concrete. The substandard rebar was removed using an exothermic cutting torch and new rebar matting was installed as required by engineering specification.

The damaged area was prepped and more than 1,000 yards of engineered concrete was placed by divers using several methods, including a remote operated concrete pump. UCC was able to improve safety, extend dive time and increase production by utilizing company owned NITROX equipment.