This project aimed to improve the heavy metal polluted restricted farmlands in Taoyuan. Remediation of the polluted farmland including soil exchange method and soil dilution method, and the former was mainly one. Aforementioned 200 farmlands were located in Dayuan district and Luzhu District. By the end of this project, tasks that were finished included (1) submitting a work plan, off-site treatment plan, monthly performance reports, daily activity logs, and progress reports, (2) holding discussions for farmers and landholders, (3) re-confirming the degree of heavy metal pollution of farmlands, (4) carrying site remediation by soil exchange and dilution method, self-verification, third-party-verification, fertilization, and finally (5) lifting site restriction. All work was conducted according to the contract. Besides, Taoyuan City Environment Protection Department (TYEPB) also held discussions at regular intervals to know well the work. Moreover, to avoid abnormal use of the restricted farmlands, we went around and inspected once two month. 　　The achievements of this project included (1) re-confirming the degree of heavy metal pollution on 198 polluted farmlands. (2) holding 1 terms of discussions for farmers and landholders. (3) submitting off-site treatment plan. (4) analyzing soil fertility for 200 farmlands. (5) environmental monitoring from fourth quarter of 2018 to first quarter of 2020. (6) carrying site remediation on 200 numbers (25.4005 hectares) by soil exchange and dilution method. (7) passing self-verification, third-party-verification for 200 numbers of farmlands. (8) recovering soil fertility for 200 numbers of farmlands.

ploughing method, heavy metal pollution, remediation of the polluted farmland