What is the relationship between the formulation and construction of soil and water conservation plan and other chapters such as environmental assessment, flood control, safety assessment and resettle

What is the relationship between the formulation and construction of soil and water conservation plan and other chapters such as environmental assessment, flood control, safety assessment and resettlement? Please elaborate. General environmental assessment and soil and water conservation plan are the procedures that must be performed before the project is established. Only when water and soil conservation is involved in the EIA, it is necessary to provide the water and soil conservation plan approved by the water administrative department, and the water and soil conservation plan has a chapter on flood control evaluation. I don't know much about other flood control evaluation and safety evaluation, and they should be carried out in parallel.