The upgrade to the Water Treatment Plant in Chinook involves a lot of different skills and procedures to complete the project. A recent installation required calling in divers who specialize in underwater work. An air scour, a set of perforated tubes that uses air pressure to clean out river silt at the intake to the plant from the river, had to be replaced along with tubing that takes pressurized air to the cleaning device. The work had to be accomplished underwater adjacent to the weir across the Milk River.

The work was conducted by a dive team with Liquid Engineering Corporation, a Bil...