Avaliação geológica/geotécnica e ambiental preliminar para análise da viabilidade de implementação de aterro de resíduos de construção e demolição

Abstract

With the increase in population resulting in the advance of urbanization, the construction industry has been increasingly used, thus increasing the volume of solid construction and demolition waste generated, which represent between 13% and 67% of urban waste generated, these being, generally, arranged in an incorrect way. Thus, Resolution 307 of CONAMA (2002) establishes guidelines, criteria and procedures for the management of this waste. With the arrival of the Universidade Federal do Pampa in Caçapava do Sul - RS, there is a large increase in construction and demolition waste generated and, in view of the correct disposal of the waste generated, the municipal government is providing an area for the construction of a landfill. The area is located 4km to the south of the down town, which has been habitually made the irregular deposition of several urban waste, which can be classified as dangerous (batteries and network cards) and not dangerous as the construction and demolition waste. With satellite images it is possible to observe in the years between 2012 and 2016 a great increase of this irregular deposition. According to reports from local residents, a pottery shop operated in the area, which may have led to this waste disposal, due to the hole left after the closure. Four trenches were used for geotechnical classification, with clay soils, soft altered rock and a layer of approximately 1.5m with different municipal waste such as plastics, glass and rubber. In the extreme northeast of the area a source was detected that is contributor of the CORSAN dam that supplies the city. It may be considered that the area is suitable for installation of a construction and demolition waste landfill provided that environmental standards are met.