Environmental health risk assessment of sulfur dioxide (SO2) at workers around in combined cycle power plant (CCPP)

State electricity company is an Indonesian government-owned corporation with a monopoly on Indonesia's electricity distribution. Sulfur dioxide (SO 2 ) pollution is produced by burning fossil fuels with coal and oil-fired power plants. At the combined cycle power plant (CCPP), the state electricity company has the largest role in SO 2 production. In addition, SO 2 can cause respiratory tract dysfunction, decreased lung function, eye irritation, throat irritation, and coughing at certain concentrations. This study aims to assess the magnitude of SO 2 exposure to workers health at CCPP Indralaya unit, Indonesia. The research is a quantitative study using the environmental health risk assessment (EHRA) method. Purposive sampling was used to obtain 32 respondents. The results revealed that the average SO 2 concentration was 0.085 mg/m 3 . The non-carcinogenic intake was 0.0025 mg/kg/day for real-time exposure and 0.0069 mg/kg/day for lifetime exposure. The Risk Quotient (RQ) for real-time exposure obtained is 0.0959, and RQ for lifetime exposure is 0.2668, indicating an RQ=1. The study concluded that the CCPP Indralaya unit is not at-risk cause non-carcinogenic due to SO 2 exposure. Regardless, precautions must ensure that workers' exposure to SO 2 or other emissions gases produced by CCPP activities does not endanger their health.