Ameren's request to renew the operating license for its Callaway Nuclear Power Plant with the U.S. Nuclear Regulatory Commission, for the next 20 years, has garnered another legal challenge.
Updated 2:15 p.m. with link to full legal document.
A St. Louis-based environmental group is asking the federal government to more closely scrutinize Ameren Corp.'s request for a 20-year license renewal at Missouri's only nuclear power plant.