On 3rd September, 2019, China Ministry of Ecology and Environment (MEE) issued a notice to publish the Framework Guide to the Technology Methods of Environmental Risk Assessment for Chemical Substances (Trial), which is an important supporting document for Environmental Risk Assessment and Control Regulation for Chemical Substances. (CL News) This Guide specifies the basic framework for risk assessment, and clarifies the basic points, technical requirements, and report preparation as well. 

General requirements for the risk assessment of chemical substances are specified in the guide, such as assessment steps, assessment conclusion, uncertainty assessment, data quality assessment, risk assessment for special chemicals, etc. It is worthy noticing that the Guide applies to environmental risk assessments of different exposure pathways for the normal production and use of a single chemical substance, and does not apply to risk assessment under accidental exposure conditions.