| 英文摘要 |
The objectives of this project included the investigation in farmlands using faeces of livestock and poultry, the current situation of soil contamination in Meizhou area, the investigative follow-up of the previous soil contamination events, the verification of the regulated sites of steel factory in Yilan City, the maintenance, management and monitoring of the groundwater wells, and the emergency sampling and investigation. The performing period of this project is from 02/01/2013 to 12/20/2013. The chief achievements of this project are as follows.
(1)The investigation in farmlands using faeces of livestock and poultry
In this study, the Yilan County is divided into four areas and the investigation performs in four stages. Finally, 101 points of controlled heavy metal in soil, 15 points of controlled pesticides in soil, 2 points of common-used pesticides, 10 points of heavy metals in deposit, 10 points of groundwater sampling and analysis (including the common items, heavy metal and the controlled pesticides), 15 samples of controlled heavy metal in crops and 15 samples of the residual common-used pesticides have been accomplished.
(2)The investigative follow-up of the previous soil contamination events
In this field, we performed the investigation of “Gong-Lao area in Zhuangwei Township”, “Pei-Fu area in Dongshan Township”, “Long-Quan area in Jiaoxi Township” and “An-ping area in Dongshan Township”. There are 10 points of controlled heavy metal in soil being completed. The results showed that the content of Cr in the Long-Quan area exceed the soil control standards. Besides, the contents of As in the Pei-Fu area and An-ping area both exceeded the soil control standards.
(3)The current situation of soil contamination in Meizhou area
In this topic, 10 points of PCBs, 10 points of controlled heavy metal and 5 points of TPH in soil have being completed. Results showed that the content of As near the Dong-Yi steel factory exceeded the soil control standard. The Environmental Protection Bureau, Yilan County has taken measures to restrain from increasing the soil contamination according to the Soil and Groundwater Pollution Remediation Act.
(4)The verification of the regulated sites of steel factory in Yilan City
In this section, the verification of Rei-Yang Steel Factory, Dong-Yi Steel Factory and Yi-Yang Asphalt Factory have been completed. According to the results of the verification, the contents of controlled heavy metal, PCBs and TPH of Rei-Yang Steel Factory and Dong-Yi Steel Factory are below the soil control standard. The Environmental Protection Bureau, Yilan County has removed the restrict from the Soil and Groundwater Pollution Remediation Act. The Yi-Yang Asphalt Factory differ from the result of the above-mentioned contamination sites, the contents of TPH in soil still exceed the soil control standard.
(5)The emergency sampling and investigation
During the process of this project, 11 investigation cases have been accomplished The original budget of this section is 900,000 NTD and the expenses of this section cost 1,056,000 NTD finally. The results revealed that the content of Zn in soil of Ai-Cheng Area have exceeded the soil control standard. Besides, the content of Cu in soil of Si-Ji Area of Datong Township have exceeded the soil control standard.
(6)The maintenance, management and monitoring of the groundwater wells
In this section, 45 point of groundwater monitoring well sampling have been accomplished, and the analysis item including the common items and the controlled heavy metal. Two standard monitoring well have been set, and one standard monitoring well has been cancelled. Through seven points photography of standard monitoring well, we suggested that five of that should take clean maintenance and keep the function of monitoring well.
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