The degradation of sealed landfills can be hazardous but can also be of economic interest as biogas is produced. The internal landfill characterization can be investigated by geophysical methods. Here in a preliminary GPR survey, with a 100MHz antenna, was carried out and the results obtained allowed the interpretation of the landfill base, identification of high attenuation zones, interpreted as leachate accumulation, diffraction zones, interpreted as metallic objects and, finally, landfill collapsed areas. <br>The integration of several 2D profiles into a 3D block allows the analysis of lateral and depth continuity of the interpreted events. <br>


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