The EPA uses a variety of methods to gather information on air pollution from vehicle exhausts, power plants, industrial facilities and small businesses. Models, sampling, emissions tests and release reports all contribute to the Agency's ability to protect the nation's environmental health, set achievable goals and develop new initiatives for combating pollution. Once it has gathered and compiled this information, the Agency makes it available to the public through the Toxics Release Inventory, National Emission Inventory, the Aerometric Information Retrieval System and other sources.
Recommended EPA Web pages |