Environmental impact assessment is a process, which focuses on the prevention function of environmental impact assessment before the start of decision-making and development and construction activities. After the decision is made or the development and construction activities begin, the environmental impact assessment is still continuing through the implementation of the environmental monitoring plan and the sustainability study. The assessment conclusions are constantly verified and fed back to the decision-makers and developers to further modify and improve their decision-making and development and construction activities. In order to reflect the role of implementing environmental impact assessment, the organization and implementation of environmental impact assessment must adhere to the sustainable development strategy and the concept of circular economy, strictly abide by relevant national laws, regulations and policies, be scientific, fair and practical, and follow the following basic technical principles:
1. Combine with the characteristics of the proposed plan or project;
2. Comply with national industrial policies, environmental protection policies and regulations;
3. It conforms to the watershed, regional functional zoning, ecological protection planning and overall urban development planning, with reasonable layout;
4. Comply with the principle of cleaner production;
5. Comply with national laws, regulations and policies on biochemistry, biodiversity and other ecological protection;
6. Comply with the national policy of comprehensive utilization of resources;
7. Comply with national land use policies;
8. Conform to the total amount control requirements specified by the state and local authorities;
9. Meet the requirements of up to standard pollutant discharge and regional environmental quality;
10. Correctly identify possible environmental impacts;
11. Select appropriate prediction and evaluation techniques and methods;
12. Environmentally sensitive targets are effectively protected and adverse environmental impacts are minimized;
