The U.S. Environmental Protection Agency announced that Post Holdings, Inc. and Ralcorp Holdings Inc. will pay $635,000 in penalties for violations of the Clean Air Act at its cereal production facility in Modesto, California, including failing to install required air pollution controls. The companies will also pay $1.4 million they have already spent on equipment to reduce emissions of volatile organic compounds from the facility by 95%. The settlement requires the facility to monitor emissions and provide reports to the EPA to ensure compliance with the Clean Air Act and protect air quality.