Pennsylvania’s senators and eight House members sent a letter October 15 to Environmental Protection Agency Administrator Lisa Jackson asking the agency to revise mercury and air toxics standards to protect power plants that burn coal waste. The delegation contends that the standards should include a subcategory for hydrogen chloride emissions from waste-coal plants, as the plants will be able to meet the mercury and particulate matter limits but not the hydrogen chloride limit. The agency issued a final rule in December setting numeric emissions limits for mercury, filterable particulate matter as a surrogate for toxic metals, and hydrogen chloride as a surrogate for acid gases.