The Self-Potential (SP) method applied for investigating the contamination in the vicinity of the Estrutural city landfill, in Brasilia-DF.

This paper presents the self-potential (SP) method results and the comparison of this results with electrical resistivity data in delineation of potentially impacted areas by leachate flow from Jockey Club Landfill, located at Estrutural City, Brasilia-DF. The survey was made at the south part of landfill boundary, near of Brasilia National Park. The probable leachate plume is prolonged to out of landfill boundaries and, in general, those plumes have the same directions of the groundwater flow. The SP method application aims to infer the subsurface leachate flow direction. The results obtained showed a good correlation with electrical resistivity data. The self-potential method has proved to be an important tool for assessing the environmental quality in Landfills.