PUBLIC CAN TRACK SO2 AND NOx EMISSIONS AT COAL-FIRED POWER PLANTS VIA WEBSITE EPA has improved its interactive tracking tools on EPA's website to help the public track sulfur dioxide (SO2) emissions from coal-fired power plants and other indicators at individual coal-fired power plants subject to the _Acid Rain Program_ (http://www.epa.gov/airmarkets/progsregs/arp/index.html) . The Acid Rain Program requires power plants to reduce emissions of SO2 and nitrogen oxides (NOx) - the primary causes of acid rain - and since 1995 has achieved significant environmental and public health benefits. In 2008, electric generating units (subject to the market-based cap and trade SO2 program) emitted 7.6 million tons of SO2, a level well below the current annual emission cap of 9.5 million tons. The interactive tracking tool and quarterly updates of emissions data from coal-fired plants is available at _http://www.epa.gov/airmarkets/quarterlytracking.html_ (http://www.epa.gov/airmarkets/quarterlytracking.html) Note: If a link above doesn't work, please copy and paste the URL into a browser.