MÉTODOS DE AVALIAÇÃO ECONÔMICA APLICÁVEIS EM PROJETOS DE INFRA-ESTRUTURA URBANA:

Abstract

The research had for purpose to present and to analyze the models of economic valuation of environmental assessment applicable in the indicators of return on investments in basic sanitation projects. It also searched the application of a model-case example of a project to expand the sewage treatment plant in Goiânia, stage of primary to secondary treatment. Introduces the concepts of sustainable development and economic evaluation of the environment, focusing on the latest methods and their applications in basic sanitation projects. Applies the model of economic evaluation used by the Program for Improving Sanitation Sector, using the contingent valuation method to estimate in monetary terms, the benefits from the implementation of the project and analyzes the results from the application of this method. This paper uses a literature search and data from an empirical research conducted in July 1996, when drafting the master plan for water and sewage from Goiânia and conurbation áreas, applied to a sample of the population among the beneficiaries of the system sewage of Goiânia. The results indicated the economic sustainability of the project, when adopted a method of economic evaluation of the environment, whereas traditionally employed in the evaluation had not economically viable, demonstrating that use of these methods can assist in decision making on investments to be made, thereby contributing to sustainable development.