The drills included a wide range of law enforcement tactics and emergency response procedures.
Officials said all air and water quality tests continue to show that there's never been detectable methanol in the air or water.
McBride's Fleet, a tow boat service based in New Albany, will start salvage operations for a damaged barge carrying methanol on Tuesday morning.
That was the message from Louisville Mayor Craig Greenberg and other officials Wednesday afternoon.
The U.S Coast Guard said the incident occurred at 9:45 a.m. on Saturday and this caused southbound and northbound traffic at the Ohio River to close.
The project is touted as "a key infrastructure investment" supporting efforts to enhance outdoor recreation in west Louisville.
Conservation officers confirmed 26-year-old Donald Watson was located in the Ohio River around 4:30 p.m. Wednesday by friends who were searching for him.
On the evening on Dec. 25, a tow vessel hauling 15 coals barges crashed into the Clark Memorial Bridge.