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ATMOSPHERIC DEPOSITION MONITORING -- CLEAN AIR STATUS AND TRENDS NETWORK (CASTNET) OPERATION
Impact/Purpose:
Deposition data is used internally by EPA staff and externally by other government agencies and stakeholders from industry, academia and other research organizations, and environmental advocacy organizations.
Description:
CAMD operates a national monitoring network mandated by the 1990 Clean Air Act Amendments (CAAA) to determine the effectiveness of promulgated emission reductions. The Clean Air Status and Trends Network (CASTNET) provides data for determining relationships between emissions, air quality, deposition, and ecological effects. CASTNET's objectives are to define the geographic distribution of pollutants and atmospheric deposition, detect and quantify trends in pollutants and deposition, and provide data on the dry deposition component of acid deposition and ground-level ozone concentrations.