[The first international standard in the field of groundwater remediation in uranium mining and metallurgy formulated by China was released] On November 9, the first international standard in the field of groundwater remediation in uranium mining and metallurgy, which was led by China, "Groundwater Remediation of In-Situ Leach Uranium Mining Part 1: Determination of Groundwater Remediation Target Values" was recently released by the International Organization for Standardization (ISO). This international standard is led by Chinese experts and involves experts from the United States, the United Kingdom, Canada, Germany, Argentina and other countries. This standard focuses on key aspects such as groundwater environmental investigation, stakeholder identification and participation, groundwater remediation technology screening, and target value determination. It applies risk assessment, cost-benefit analysis, matrix scoring and other methods to scientifically and reasonably determine target pollutants and limit values ​​for groundwater remediation, providing an important basis for global uranium mining and metallurgy environmental remediation and other groundwater remediation. (CCTV News)