Método Eletromagnético Indutivo E Gpr Aplicados À Detecção De Contaminação Do Solo E Água Subterrânea Por Resíduos Industriais

In the study presented, geophysical surveys were<br>applied in the assessment of soil and groundwater<br>contamination of an abandoned industrial area, where<br>the hazardous wastes were infiltrated directly into the<br>soil. The proposed goals were to detect and map the<br>presence of the contaminants on the subsurface<br>through the use of frequency domain electromagnetic<br>method (FDEM) and ground penetrating radar (GPR).<br>The FDEM method was carried out to obtain apparent<br>electrical conductivity of the terrain in different<br>investigated depths, what allowed to map contaminant<br>plume related to the inorganic compounds<br>disseminated in the soil and dissolved in the<br>groundwater. The GPR data provided the imaging of<br>the contaminants present in the vadose and saturated<br>zones, besides to confirm the indications of the<br>contamination flow as pointed by the FDEM survey.<br>Also, it was verified that the low frequency antenna<br>(25MHz) is able tool to determine the extension of the<br>inorganic contamination plume.