Constructed Wetlands for Assimilation of Dairy Effluents: Monitoring Studies
Currently much emphasis is being placed on non-point source (NPS) pollution. In addition to identification and extent of these sources, there also exists the need for targeting best management practices (BMP) and monitoring the success of their implementation. This cooperative, interagency demonstration project in Putnam County, Georgia is an evaluation of a selected BMP (constructed wetlands) utilized to capture discharge from overloaded dairy lagoons. The low cost, yet effective, use of wetlands in assimilating agricultural wastewater has shown much promise (Maddox and Kingsley, 1990; Costello, 1990). The project represents a joint effort by the U.S. Environmental Protection Agency, the U. S. Department of Agriculture, Soil Conservation Service, the State Soil and Water Conservation District, the Piedmont Soil and Water Conservation District, Cooperative Extension Service and the Georgia Department of Natural Resources. Pre and post project biological and water chemistry monitoring, which commenced in December 1989, is being conducted jointly by staff of EPA, Environmental Services Division (ESD) in Athens, Georgia and the Georgia Environmental Protection Division (GAEPD). Monitoring efforts, in addition to defining effectiveness of the BMP in pollution abatement, were designed to characterize pre-project water chemistry and biology of receiving waters and subsequent changes following implementation of the BMP.