According to The Hill, The D.C. Circuit Court of Appeals has upheld an Environmental Protection Agency (EPA) rule on emissions of certain toxic air pollutants at manufacturing plants. " /> According to The Hill, The D.C. Circuit Court of Appeals has upheld an Environmental Protection Agency (EPA) rule on emissions of certain toxic air pollutants at manufacturing plants. " /> According to The Hill, The D.C. Circuit Court of Appeals has upheld an Environmental Protection Agency (EPA) rule on emissions of certain toxic air pollutants at manufacturing plants. " />