This project was carried out from August 14, 2018 to February 13, 2020 for a total duration of 18 months. The major tasks completed in this project including the following: 1.Reviewing pollution remediation plan and other associated documents This project assisted the Environmental Protection Bureau (EPB) to review a total of 103 project reports and construction plans submitted by China Petrochemical Development Corporation (CPDC). 2.On-site construction supervision and staffing On-site duty staffs were responsible for various project tasks, such as supervising construction quality, site health and safety, remediation progress and daily logging of all situations and deficiency related to the project. As of the end of February 13, 2020, there were 4 remediation projects behind schedule, which were “Thermal Treatment Plant Operation”, “Area B of Seawater Storage Pool Contaminant Removal”, “Area A of Seawater Storage Pool Contaminant Removal” and “Pentachlorophenol-plant area Excavation”, respectively. During the project, on-site duty staffs had issued a total of 16 violation tickets regarding construction quality and site health and safety. In addition, issued a total of 95 site contact lists and daily reminder. All tickets required CPDC to make proper correction within the given time. 3.Site and perimeter control zone management On-site duty staffs had conducted perimeter control zone inspection daily (including weekend) and prepared daily reports. A total of 24 deficiencies, including 16 environmental inspections and 8 fish farms inspections, were noted. 4.Verification sampling during remediation period One flue gas sample from thermal treatment plant was collected monthly. The analysis results showed that the dioxin concentration on December 4, 2018, was detected above the emission standard, thus, CPDC had been asked to review and make necessary improvements. As for the performance verification of thermal treatment for contaminated soil, a total of 22 samples were collected to verify the treatment performance. The results were all lower than the soil pollution control standards and 23,475.78 tons in volume of treated soil had been verified. Additionally, one off gas sample from wet treatment was collected quarterly. The analyzed results from a total of 6 samples were all below emission standard. As for the performance verification of wet treatment for contaminated soil, a total of 55 samples were collected to verify the treatment performance. The results were all lower than the soil pollution control standards and 55,930.77 tons in volume of treated soil had been verified. This project had completed remediation verification for the regions of the northwest side of the single vegetation area. Post-remediation verification sampling tasks had been completed for a total area of 1 hectares, and the whole area had analysis results detected below soil pollution control standards. 5.Environmental quality monitoring during remediation period This project collected one effluent sample each month, for a total of 16 samples. 7 out of the 16 effluent samples results exceeded effluent standards stated in the remediation plan. In addition, 4 groundwater samples were collected every half year, the results for a total of 12 samples were all lower than the groundwater pollution control standards. Finally, 5 ambient air samples were collected Quarterly. Fine suspended particles (PM2.5) exhibited higher concentration during winter periods but still in close correlation with surrounding ambient air concentration. 6.Emergency response measures and claim petition reactions One flue gas sample from thermal treatment plant which was collected on December 4, 2018, showed that the dioxin concentration was detected above the emission standard. After necessary improvements had been taken by CPDC , the flue gas sample collected on December 24, 2018, showed the analyzed results below emission standard. Three effluent samples were collected during 0823 tropical depression flood, and all of the analysis results were higher than effluent standards stated in the remediation plan. 7.Administrative and other supporting activities This project had assisted EPB updating and maintaining the CPDC An-shun plant website monthly for providing the latest information for the local residents. In addition, attending or calling meetings and/or conferences 71 times.

Dioxin