On April 11, the Environmental Protection Agency (EPA) announced it would reach two major conclusions on lead pollution issues in Tennessee and Missouri by August 15. The EPA agreed it would approve or disapprove the Tennessee state implementation plan 2008 national ambient air quality standard for lead in addition to determining if the Herculaneum nonattainment area in Missouri met the 1978 lead standard. The announcement came in the proposed consent decree for a case in the U.S. District Court for the Northern District of California; the Center for Biological Diversity and the Center for Environmental Health filed the suit against the agency, saying it did not act by the April 2011 and then October 2008 deadlines for the Tennessee and Missouri issues, respectively.