The state Emergency Operations Center Madison is elevated in response to an incident at a nuclear power plant on the Mississippi River. There’s been no release of any radiation at the Prairie Island Nuclear Power Plant near Red Wing, Minnesota. Lori Getter with Wisconsin Emergency Management says they responded to an alert early Thursday from the plant operated by Minnesota-based Xcel Energies. There was a leak of sodium hypochlorite, commonly known as chlorine bleach, which is used to help cool water. The leak was found near a tank and has been contained by crews. It’s not known how the leak started. Getter says there was no release of chemical fumes, and cleanup got underway at about 7:30 Thursday morning.