Environmental Risk Analysis of Final Processing Sites (TPA) Using the Integrated Risk Based Approach (IRBA) Method: A Case Study of TPA with Landfill Control System
The place processing end (TPA) Ussu is located in Ussu village, Malili, East Luwu district, South Sulawesi Province. It has been operated since 2015 with a 4 ha land area and serves 5 districts, namely Malili, Angkona, Wasuponda, Towuti, and Noah. In 2019, this landfill was diverted into a system control landfill, but the implementation is still a conventional use system of open dumping. The system has a high risk for the environment, such as water pollution, soil consequence leachate, air pollution that is caused by methane gas, the emergence of disease, and the risk of landfill fire. Risk analysis is required to describe the risk toward the environment from certain activities. The study is conducted to evaluate the risk to the environment from the operational place processing end (TPA) in Ussu. The research method used is the integrated risk-based approach (IRBA) method. The experimental parameters are in the form of 20 TPA criteria parameters, four characteristics of landfill waste, and leachate parameters. Research results show that TPA Ussu scored 477.54 in the category evaluation danger ' medium ' level. The indicator has shown there are risks toward the environment at a medium level. This caused the landfill's age to be still young and hence required rehabilitation based on conditions in the field with repair system operational landfill control by gradually reducing or lowering danger risk environment.