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----- P REFACE This report has been prepared as a part of "An Integrated Environmental Assessment of Federal Regions 4 and 6," being con- ducted by an interdisciplinary research team from the Science and Public Policy Program (S&PP) under a cooperative agreement with the Office of Strategic Assessment and Special Studies, Office of Research and Development, U.S. Environmental Protection Agency.
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The objective of air pollution control is to prevent adverse responsesby all receptor categories exposed to the atmospherehuman, animal,vegetable, and material. These adverse responses have characteristic re-sponse timesshort-term (i.e., seconds or minutes), intermediate-term(i.e., hours or days), and long-term (i.e., months or years) (Table 4-5).
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