EPA

The Environmental Protection Agency held holding public hearings in states that are greatly affected by air pollution. One of the hearings was held in Los Angeles, on August 30, 2007 and the federal air pollution regulators welcomed any comments/complaints made by Los Angeles inhabitants.
Current health risks due to ozone smog have become so great that a child in Los Angeles can even play outside because he might pass out, claims one Los Angeles mother. Indeed "Los Angeles and the Central Valley have the nation's worst ozone smog."