EPA Administrator Lisa Jackson said, "Americans throughout the country are suffering from the effects of pollutants in our air, especially our children who are more vulnerable to these chemicals. This administration is committed to reducing pollution that is hurting the health of our communities. With this historic step, we are going a long way in accomplishing that goal. By reducing harmful pollutants in the air we breathe, we cut the risk of asthma attacks and save lives."
The action sets the nation's first limits on mercury air emissions from existing cement kilns, strengthens the limits for new kilns, and sets emission limits that will reduce acid gases. This final action also limits particle pollution from new and existing kilns, and sets new-kiln limits for particle and smog-forming nitrogen oxides and sulfur dioxide. When fully implemented in 2013, EPA estimates the annual emissions will be reduced as follows: Mercury 16,600 pounds or 92 percent; Total hydrocarbons 10,600 tons or 83 percent; Particulate Matter 11,500 tons or 92 percent; Acid gases (measured as hydrochloric acid): 5,800 tons or 97 percent; Sulfur dioxide (SO2) 110,000 tons or 78 percent; and Nitrogen oxides (NOx) 6,600 tons or 5 percent.
Mercury in the air eventually deposits into water, where it changes into methylmercury, a highly toxic form that builds up in fish. People are primarily exposed to mercury by eating contaminated fish. Because the developing fetus is the most sensitive to the toxic effects of methylmercury, women of childbearing age and children are regarded as the populations of greatest concern. EPA estimates that the rules will yield $6.7 billion to $18 billion in health and environmental benefits, with costs estimated at $926 million to $950 million annually in 2013. Another EPA analysis estimates emission reductions and costs will be lower, with costs projected to be $350 million annually. The rules will become effective 60-days following publication in the Federal Register.