For the agricultural land of 25 plots of 2.7762 hectares in 19 hills in Nantun and Dajia District of Taichung City, which are subject to heavy metal concentrations exceeding the control standards for agricultural land for agricultural crops, pollution improvement work is carried out by improving construction methods such as dumping, guest soil and ploughing. Reduce the concentration of heavy metals to less than 80% of the pollution control standards of soil (food crops and agricultural land), and release the management according to the provisions of the Soil and Groundwater Pollution Control Law (hereinafter referred to as the Soil Pollution Law) to achieve the restoration of agricultural land The ultimate goal of continued use.

Soil and Groundwater Pollution, heavy metal