The purpose of this project is to assist the Environmental Protection Administration, Executive Yuan (EPA) to achieve yearly goal of implementation of contaminated sediment management strategy. In total, 412 submitted sediment sampling plans and 261 reports of sediment quality survey were reviewed and revised. Results of sediment quality analysis in the first run (2014-2019) conducted by corresponding administration of water bodies were also collected and analyzed in this project. Among those results, 78 water bodies exceed the upper limit of Taiwan sediment quality guidelines, which are required to initiate further risk assessments thereafter. Also, a framework of contaminated sediment management strategy were established based on the role and characteristics of water body and their pollution potential. Meanwhile, 16 water bodies which exceeded the upper limit of Taiwan sediment quality guidelines or which have highest pollution potential were selected to be further investigated for confirmation. This project also collected regular monitoring of sediment quality 528 water bodies in the second run (2019-2024) by corresponding administration. According to those confirmation results, classification procedures of sediment mixing with background substances are also established. In order to better manage sediment, ‘The sediment quality reviewed and revised system’ and ‘Regular monitoring of sediment quality open data website’ were renewed and optimized. According to depicted experiences by administrate sediment and results of sediment quality survey in the first run, we also revised ‘Regulations for classified management and used restriction of bottom sediment quality indicators’ and ‘Regulations for regularly test sediment quality resulting data by the industry competent authorities ’ of the proposed agreement. For the list of domestic or foreign concerned emerging chemical pollutants in sediment, Glyphosate, Dicofol, Short-chain chlorinated paraffins (SCCPs) were selected to collect their distribution and characteristics in the sediment. To propagandize the concept of protecting sediment quality in the water bodies, 2 copies of sediment-protecting flyers was also drafted in this project.

Sediment, Management strategies, Pollutants investigation