A procedure for administrative examination and approval of construction project EIA is the environmental impact of construction projects in China in the field of evaluation and assessment of environmental quality. In a broad sense, the environmental impact assessment of construction projects is the value assessment of the status of environment system of the proposed project, judgment and countermeasures are put forward.
       The construction project environmental impact assessment refers to the generalized environmental impact on the proposed project may cause (including environmental pollution and ecological destruction,Including a favorable impact on the environment) analysis, whole process analysis, and on this basis put forward the prevention measures and countermeasures taken. Special means of the proposed construction project in the construction of the feasibility on the stage, the location, design, construction process, especially the prediction and analysis of environmental impact operations and production stage may bring the corresponding preventive measures are proposed for the project site, to provide a scientific basis for environmental management and after the completion of the design.
In accordance with the 《People's Republic of China Environmental Impact Assessment Law 》 《environmental protection law of the People's Republic of China》 , the state has carried out classified management of the environmental impact assessment of the construction projects in accordance with the degree of environmental impact of the construction projects.
       The construction unit shall, in accordance with the following provisions, entrust a qualified EIA unit to organize the preparation of the environmental impact statement, the environmental impact statement or the environmental impact registration form:
       (1) if it may cause serious environmental impacts, the environmental impact statement shall be prepared to make a comprehensive evaluation of the environmental impacts arising;
       (2) if it may cause mild environmental impacts, it shall prepare an environmental impact report and conduct an analysis or a special evaluation of the environmental impacts;
       (3) If the environmental impact is very small, and the environmental impact assessment is not necessary, the environmental impact registration form shall be submitted.
       The list of classified management of environmental impact assessment of construction projects shall be formulated and promulgated by the competent administrative department for environmental protection under the State Council.
       The environmental impact statement of the construction project shall include the following contents:
       (1) Overview of the construction project;
       (2) The surrounding situation of construction projects;
       (3) Analysis of the construction project can have an impact on the environment, prediction and assessment;
       (4) The construction project environmental protection measures and technologies, economic demonstration;
       (5) Analysis of the impact of construction projects on the environment and economic profit;
       (6) The implementation of environmental monitoring of construction project proposals;
       (7)Environmental impact assessment conclusion.

       Environmental impact assessment is generally divided into three stages, namely, preliminary preparation, research and work program phase, analysis and demonstration and prediction evaluation stage, the preparation stage of environmental impact assessment documents.
       1.Reliminary preparation, research and work plan phase
The first stage of the environmental impact assessment, mainly finished the following work. Accept the environmental impact assessment commissioned by the first is the study of national and local environmental protection laws and regulations, policies, standards and related planning documents, determine the environmental impact assessment document types. Based on the study of relevant technical documents and other relevant documents, preliminary engineering analysis, at the same time to carry out investigation and public opinion environment. According to preliminary investigation and preliminary engineering analysis results and environmental status information, environmental impact of construction projects can be identified by the Qin Dynasty, the main environmental impact assessment factor selection, clear evaluation focus and goal of environmental protection, to determine the ring The scope of environmental impact assessment, the evaluation of the work level and evaluation criteria, and finally work out a programme of work
       2. Analysis, demonstration and prediction
The second stage of the environmental impact assessment, the main job is to do further analysis of engineering environment present situation investigation thoroughly, monitoring and evaluating situation of environmental quality, environmental impact assessment of construction projects according to the pollution sources and environmental status data, environmental impact assessment of construction project, and carry out a public opinion survey. If the selection of construction the need for a project site, you need to each site were predicted and evaluated, and recommend the best site plan from the perspective of environmental protection; if the original location that the negation of the conclusion, it is necessary to carry out environmental impact assessment for the new location.
       3. Compilation stage of environmental impact assessment documents
The third stage of the environmental impact assessment, the main work is to collect all kinds of information, analysis, the second phase of the data, according to the construction project environmental impact, laws and regulations and standards requirements and the wishes of the public, proposed to reduce environmental pollution and ecological effects of environmental management and engineering measures to determine the feasibility of project construction from. The perspective of environmental protection, gives the evaluation conclusions and proposes further suggestions to mitigate environmental impacts, and complete the environmental impact report or report the preparation of the final.