The report presents the results of the first phase of the Santa Clara Valley Integrated Environmental Management Project (IEMP), an innovative project designed to address the environmental and public health problems posed by toxic chemicals in California's Santa Clara Valley. Integrated environmental management is intended to be a practical tool for controlling pollution that threatens public health. EPA, in partnership with state and local leaders, can use estimates of the public health impacts of a wide range of environmental problems to compare those problems and set priorities for risk management. Setting priorities provides a way of working through an environmental agenda by targeting the worst problems first in order to get the most risk reduction (and thus public health benefit) for any given level of resources.