Water Resources Agency, MOEA proposed "Errenxi River Waste Removal Implementation Plan Phase II (Draft)" requires a huge amount of removal funds for the four removal sites, of which the EPA is required to bear up to 1.39226 billion. Therefore, this project is commissioned to conduct a supplementary survey on waste classification, to understand the feasibility of waste classification and reduction, to estimate the exact amount of waste by reclassification, and to evaluate the necessity of waste removal and waste removal channels, etc. Research and propose on-site waste removal and classification schemes and countermeasures, as well as supervision and quality control measures for on-site waste removal, and discuss more economical and effective removal plans. In this project, the main works and major accomplishments were： 1.Assessing the impact of the waste site on the water environment of Erren River： Collect and compile river water quality and sediment investigation data related to this case, On-site work such as confirming the investigation area and environmental sampling of rivers adjacent to the site, water quality and sediment sample analysis, etc. Based on the collected and consolidated river water quality and sediment investigation data related to this case, proposed a recent river water quality and sediment investigation report on Erren River. 2.Conduct site waste classification investigation, Propose a plan for site removal： Collect and compile site investigation data and removal data related to this plan, Conduct site waste classification investigation, And based on the results of the site investigation, the on-site removal and classification of waste on the site and proposed the countermeasures. 3.Visit the capacity of the waste removal company, research and propose the schedule of the plan and operation management measures： The job content includes waste capacity of the waste removal company visits, Estimate the site removal plan funds and operation schedule, Research and propose cleaning procedures, quality control measures, etc. According to the recent waste investigation results collected from the sites in the Erren River, Planning and conducting waste removal visits to at least 50 companies, Research and analysis of Erren River waste removal, treatment technology, treatment capacity and acceptance criteria, etc. At least 50 companies visits have been completed in this report. 4.Strengthening Erren River waste removal and water environment improvement performance： The job content includes using a UAV for photography and to make a documentary film of site removal, Hold a symposium for exchange of opinions and communication.The UAV photographic record of the site has been completed, and the historical data of the case have been collected and compiled, edited and produced to record the site removal; on March 31, 2023, scholars were invited to hold a symposium.

Erren River, waste site, Removal Program Evaluation