Integrated Modeling for Integrated Environmental Decision Making White Paper, November 2008 (69 pages, PDF), released January 12, 2009.
Background: “Given the complex and multi-dimensional nature of environmental problems, the EPAs original vision was to consider the environment as a single, interrelated system. To achieve its mission of protecting human health and safeguarding the natural environment, the EPA often employs mathematical models to study environmental systems and processes and to inform regulatory decision making. While traditionally environmental modeling has focused on considering a single pollutant in a single environmental medium, this approach is no longer viewed as sufficient for effective environmental management decision support. It is increasingly recognized that a holistic approach to modeling the environment and the mechanisms governing the fate and transport of pollutants through the different environmental media as well as the multiple exposure pathways and the consequent responses of humans and ecosystems, is required to adequately assess and address environmental problems.
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