This plan is based on the Pingtung County Government Environmental Protection Bureau (EPB) in accordance with the provisions of Article 6 of the "Soil and Groundwater Pollution Remediation Act" to conduct regular inspections on the quality of soil and groundwater in the jurisdiction. The benefit of the implementation of this project is to monitor the environmental status of soil and groundwater in Pingtung County to ensure the quality of local soil and water and the health of the people. The work items include sampling and analysis of water quality in underground civilian wells, sampling and analysis of monitoring wells in the potential area of volatile organic compounds (VOCs) in Yenpu Township, soil sampling and analysis of 4 pollution potential farmland site, sampling and analysis of soil and groundwater near illegal disposal sites, and farmland soil sampling and analysis in Jhutian Township.
The groundwater sampling was performed at 3 underground water civilian wells near 391, 392, 399, 400, etc. of Xinyang Section of Shinyuan Township. The analysis items are 8 heavy metals (copper, mercury, zinc, lead, chromium, cadmium, arsenic, nickel), The results of the dry and the wet season showed that the groundwater heavy metal detection items of the 3 civilian wells were all lower than the second-category groundwater monitoring standards.
Water quality analysis of 8 monitoring wells in the potential area of VOCs in Yenpu Township was performed at groundwater monitoring wells T00256, T00257, T00258, T00414-1, T00414-2, T00415-1, T00415-2 and T00469 in Yenpu Township. The test results in the dry season showed that 1,1-Dichloroethylene (1,1-DCE) was detected in 4 groundwater monitoring wells, which the measured values were T00258 (0.00287 mg/L), T00414-1 (0.00557 mg/L), T00415-1 (0.00413 mg/L) and T00415-2 (0.00717 mg/L). In the wet season, the measured values of 1,1-DCE in 5 groundwater monitoring wells were T00256 (0.00149 mg/L), T00414-1 (0.00549 mg/L), T00414-2 (0.00629 mg/L), T00415-1 (0.00304 mg/L) and T00415-2 (0.00836 mg/L). The values all were lower than the second type of groundwater monitoring standard value (0.035 mg/L), the measured values of 1,1-DCE in 2 groundwater monitoring wells were over the recommended value for the verification of VOCs detected in groundwater (0.006 mg/L).
The project implemented the sampling and analysis of heavy metals (copper and zinc) in soil of 4 potential pollution areas of farmland. The analysis results were all lower than the farmland soil pollution control standards, but the analysis results of the zinc in 3 sites exceeded the farmland soil pollution monitoring standards, the measured values of the zinc in 3 sites were T10302 (No.116-2, Yonglong Section, Yenpu Township, Pingtung County) was 294 mg/kg, T10300 (No.389, Huarong Section, Changjhih Township, Pingtung County) was 299mg/kg, and T10298 (No.565, Guang'an Section, Wandan Township, Pingtung County) was 368 mg/kg, there were recommended that follow-up monitoring should be carried out regularly. The concentration of copper and zinc heavy metals in the site T10293 (No.292-3, Qikuai Section, Nan-cho Township, Pingtung County) did not exceed the farmland soil pollution control and monitoring standards, it is recommended to stop monitoring.
The sampling and analysis of soil and groundwater near 4 illegal disposal sites, the common analysis items are 8 heavy metals (copper, mercury, zinc, lead, chromium, cadmium, arsenic, nickel), to increase detection of VOC at Gaushu Township site, and to increase of detection Dioxin at Linbian Township site. The results of sampling and analysis of soil and groundwater all were lower than the pollution control and monitoring standards.
Soil sampling and analysis in 30 blocks of 300 hectares of farmland in Jhutian Township, the analysis items are 8 heavy metals (copper, mercury, zinc, lead, chromium, cadmium, arsenic, nickel), the analysis results were all lower than farmland soil pollution control and monitoring standards.