A total of seven people were taken to the hospital after a chlorine gas leak was reported. The cause of the leak was a truck driver who delivered a chemical to a Water Plant and “unintentionally mixed two chemical compounds in a holding tank.” This then released the chlorine gas “from the tank vent.” The chemical reaction released chlorine gas from the tank vent, which drifted with the south wind into the local area, causing eye burns and nasal irritation.