Following the promulgation of the Air Pollution Control Act on May 23, 1975, control over the characteristics of air pollutant emissions has become more mature and comprehensive, while there has been increased awareness of environmental protection among the public. Thus, various control standards have been made more stringent and the control targets more complete in recent years. Due to the complexity of the characteristics of air pollutant emissions, although the number of days where AQI > 150 was reduced in the past five years concerning the air quality of Chiayi County (hereinafter referred to as “the County”), O3 and PM2.5 remain the main pollutants. In terms of controlling individual emission sources, the above result shows that air quality hasn’t improved significantly. After taking the overall control of air pollutant emissions into consideration, the air quality management development plan and the air quality deterioration emergency response plan have therefore been developed to cooperate with the Environmental Protection Administration (EPA) on its poor air quality reporting policy (i.e., conveying protection messages and promoting tasks related to pollution reduction when the EPA reports poor air quality) and duly implement the County’s Emergency Prevention Measures for Severe Deterioration of Regional Air Quality.

Air Quality Management Development Plan, Air Quality Deterioration Emergency Response Plan