The project was to confirm the degree of heavy metal pollution and to take remediation measures on restricted farmlands in Taoyuan by soil dilution method. Aforementioned farmlands were located in Dayuan district. By the end of this project, tasks that were finished included (1) submitting a work plan, pollution control plans, monthly performance reports, daily activity logs, and progress reports, (2) holding discussions for farmers and landholders, (3) confirming the degree of heavy metal pollution of former-polluted farmlands and recently-controlled farmlands, (4) Inspecting the restricted farmlands bimonthly to avoid abnormal use, (5) defining the scope of polluted farmlands, (6) carrying site remediation by soil dilution, self-verification, third-party-verification, and fertilization, and finally (7) lifting site restriction. Besides, TYDEP also held discussions at regular intervals to examine the performances. Moreover, we maintained the “Remediation Management System of Taoyuan Polluted Farmland” to manage and control the schedule, helping TYDEP get involved in the project. The achievements included confirming the degree of heavy metal pollution on 456 numbers (77.3801 hectares) of polluted farmlands, after that 253 numbers (47.03 hectares) of farmlands were classified as soil-dilution sites, 200 numbers (29.77 hectares) were classified as soil-exchange sites. Also, we held 4 terms of discussions for farmers and landholders, and defined the scope of 12 numbers of polluted farmlands. Besides, we carried site remediation on 172 numbers (31.6284 hectares) by soil dilution, self-verification, third-party-verification, fertilization, and finally lifted site restriction as to recovery agricultural use for contaminated-farmlands.

Heavy metal pollution、Soil pollution dilution method、Remediation of polluted farmlands