This Site-Specific Technical Plan outlines the overall approach and defines the activities associated with the sampling and analysis of streams entering and exiting the U.S. Army Jefferson Proving Ground (JPG), Madison, Indiana, and sampling and analysis of 15 existing monitoring wells of the Gate 19 Landfill and it boundaries. This work is being performed in support of the U.S. Army Toxic and Hazardous Materials Agency (USATHAMA) under Contract No. DAAAl5-90-D-0007, Task Order 0002. The work tasks to be completed under this plan are tasks required to provide additional data needed to satisfy the requirements of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended by SARA (1986), the National Contingency Plan (40 CFR Part 300), and the National Environmental Policy Act (NEPA). The work to be conducted is required to: Define extent and magnitude of possible environmental contamination originating on and exiting from JPG via the surface water pathway. Assess human health and environmental risk associated with this contamination. Determine the presence or absence of contaminants in groundwater related to the Gate 19 Landfill and DU (Depleted Uranium) areas. Confirm the results of previous investigations. Although there have been previous environmental investigations performed at JPG, little to no site characterization work has been conducted and, therefore, data concerning the presence and extent of contamination is lacking. This work plan provides a description of the work tasks necessary to provide information required to support an assessment of risk to human health and the environment as a result of potential off-site migration of contaminants via the surface water and groundwater pathways and to ensure JPG compliance with applicable federal and state laws and regulations.