COVERT, MI (WHTC) - A weekend water tank leak that shut down the Palisades nuclear power plant in Covert apparently sent "mildly radioactive" water into Lake Michigan. Nuclear Regulatory Commission officials said that 79 gallons of the tainted water had escaped, but by the time it got to the shore, it was highly diluted and posed no threat. A similar leak last summer also shut down the facility. No timetable for when repairs will be done has been set.