The applied geophysics in environmental studies is a viable and promising alternative forward of the crescent demand for new techniques of investigation, essentially in the characterization and monitoring of contaminated areas. This paper presents the results of the application of the Electrical Resistivity and Induced Polarization methods, in analysis of the area of leachate percolation from municipal solid waste landfill, in ditches with dates of programmed closing. The results suggest an association among high chargeability anomalies and residues ditches closed recently, while the low resistivity anomalies they are independent of the age of closing. The areas with high chargeability are probably related to the precipitation of iron, dissolved for attack of the leachate in soil and metallic materials present in the residues.
leachate; chargeability; resistivity; degradation; precipitation
