In 2009, the Taiwanese Environmental Protection Administration Executive Yuan ( EPA ) found that the soil and the groundwater in the area close to Formosa Plastics'Renwu Plant has been polluted by benzene, chloroform, dichloromethane, 1, 1, 2-Trichloroethane, 1, 1-dichloroethylene, tetrachloroethylene, trichloroethylene, and vinylchloride.