On February 13 Sierra Club and Earthjustice released a Notice of Intent to Sue the Homer City Generating Station, a coal-fired power plant in Indiana County, on the grounds that the Homer City plant has violated the Clean Air Act. The Sierra Club also released new air pollution modeling which showed that the coal-fired power plant’s current permit allows it to release pollution in excess of the limits the Environmental Protection Agency sets to protect human health.

The Homer City Generating Station released the most sulfur dioxide of any plant in the United States in 2010. Sulfur dioxide is a major air pollutant and is linked to respiratory illnesses, heart disease and asthma attacks. The station has also sued the EPA to block the implementation of the Cross-State Air Pollution Rule, which would save lives and reduce healthcare costs by limiting the amount of pollution power plants are permitted to emit into downwind states.