The Environmental Methods Testing Site Project is being conducted by the Environmental Protection Agency with the cooperation of the state of Georgia, the state of Tennessee, Hamilton County, Tennessee, and the city of Chattanooga. The concept is to establish one well-characterized site at which to conduct a series of studies designed to improve environmental monitoring methods and methods for assessing human exposure to toxic substances in the environment. This management plan describes the objectives of the project and the interactions among the various participants that are necessary to complete the tasks of site selection, site characterization which includes inventorying data relevant to the Chattanooga area, designing a data base, and implementing the use of a geographic information system to analyze the data. The geographic information system will be used to analyze existing data to infer possible relationships among the elements of exposure mechanisms, and it will be used to plan studies needed to validate such relationships.