Design gráfico da pluma de contaminação por compostos orgânicos voláteiss utilizando software CAD na investigação de passivo ambiental em um posto revendedor de combustíveis em Natal/RN

摘要

Among the potentially polluting economic activities that compromise the quality ofgroundwater are the gas stations. The city of Natal has about 120 gas stations, of whichonly has an environmental license for operation. Discontinuities in the offices werenotified by the Public Ministry of Rio Grande do Norte to carry out the environmentaladaptations, among which is the investigation of environmental liabilities. Thepreliminary and confirmatory stages of this investigation consisted in the evaluation ofsoil gas surveys with two confirmatory chemical analysis of BTEX, PAH and TPH. Toget a good evaluation and interpretation of results obtained in the field, it becamenecessary three-dimensional representation of them. We used a CAD software to graphthe equipment installed in a retail service station fuel in Natal, as well as the plumes ofcontamination by volatile organic compounds. The tool was concluded thatcontamination is not located in the current system of underground storage of fueldevelopment, but reflects the historical past in which tanks were removed not tightgasoline and diesel