Soluções Sustentáveis para um Futuro Melhor

Since 2001, the environmental legislation in State of Minas Gerais, Brazil, foresees that every county or consortium of counties must present a Sanitary Landfill Project, contemplating the appropriate systems of pluvial drainage, liquid effluent collection and gas drainage. The licensing process requires the identification of all areas in the county that were, at some point, used for the disposition of wastes, as well as the description of the measures to be adopted for the recovery of the former landfill area, if the change of the disposal area is foreseen. The use of these measures, although necessary, has been neglected in most of the areas, generating environmental liabilities that are difficult to control and to quantify. Dispersion of the areas raises difficulties to the municipal managers, both to the inspection of the areas in operation and to the checking the efficiency of the required measures to recover the abandoned areas. Analyses of landfill areas processes, which had their activities closed, indicate a low index of implementation of these measures. The costs involved in the total recovery of any of these areas indicate the need of prioritization and systematization of actions. This paper aims at discussing the subject matter of the recovery of areas already degraded. Several techniques have been used as a contribution to the subject matter of recovery of degraded areas, among them, the geoprocessing techniques which, applied to the data available, allows the analysis and obtainment of several homogenous information plans for different areas.