During the summer of 1997, the SANT NAWQA performed an investigation of shallow ground water in the lower Coastal Plain of the Santee River and Coastal Drainages study unit. Thirty shallow monitoring wells were installed and water samples were analyzed for field parameters (pH, water temperature, specific conductance, and dissolved oxygen), organic carbon, major ions, nutrients, pesticides (including insecticides and herbicides). Chlorofluorocarbons (CFCs) were also measured at each well to determine the corresponding age of the water for each water-quality sample. Wells were selected based upon the amount and type of agricultural land use surrounding the site.