The agency said it will update limits for pollutants, including lead, nickel and arsenic, by 67 percent for all coal power plants.
Exposure to these substances raises the risk of developmental delays in children, as well as heart attacks and cancer.
It will also increase mercury controls by 70 percent for some power plants — specifically those that use a type of coal known as lignite, which have been operating under looser mercury limits than other coal plants.
It will also increase mercury controls by 70 percent for some power plants — specifically those that use a type of coal known as lignite, which have been operating under looser mercury limits than other coal plants.
Lignite plants are located primarily in North Dakota and Texas, EPA officials said Wednesday...
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