Harwell Gentile & Associates, LC, is dedicated to providing scientifically defensible solutions in support of environmental decisionmaking.  The principals and affiliates of Harwell Gentile & Associates are a team of primarily university-based natural, physical, and social scientists.  We specialize in the application of risk-based principles to solving complex environmental problems at a diversity of spatial and temporal scales; developing innovative and interdisciplinary approaches to assessing and managing ecosystem risks and restoration activities; and creating policy-relevant conceptual and simulation models to support environmental management actions.