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Basic data | Standard ID | NB/T 10347-2019 (NB/T10347-2019) | | Description (Translated English) | (Code for environmental impact assessment of hydropower projects) | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | P59 | | Classification of International Standard | 27.140 | | Word Count Estimation | 130,133 | | Date of Issue | 2019 | | Date of Implementation | 2020-07-01 | | Issuing agency(ies) | National Energy Administration | NB/T 10347-2019: (Code for environmental impact assessment of hydropower projects)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Code for Environmental Impact Assessment of Hydropower Projects
ICS 27.140
P 59
Energy Industry Standards of the People's Republic of China
Replace SDJ 302-88
Specification for Environmental Impact Assessment of Hydropower Projects
2019-12-30 released
2020-07-01 implementation
Issued by the National Energy Administration
1 General
1.0.1 In order to standardize the content and methods of environmental impact assessment of hydropower projects, unify technical requirements, and formulate this code.
1.0.2 This code is applicable to the environmental impact assessment of newly built, rebuilt and expanded hydropower projects.
1.0.3 The environmental impact assessment of small hydropower projects can be simplified and implemented in accordance with this code.
1.0.4 The environmental impact assessment of hydropower projects shall implement the policy of overall planning, taking measures to local conditions and emphasizing efficiency, and comply with environmental protection laws,
Laws, policies, and overall requirements for environmental impact assessment of river hydropower planning, follow the principles of objectiveness, fairness, science and rationality, and outstanding focus
Then, fully coordinate the relationship between hydropower development and ecological protection.
1.0.5 The environmental impact assessment of hydropower projects should focus on the hydrological situation, water temperature, surface water quality, aquatic ecology, and terrestrial ecology of the project.
Such long-term, cumulative, and regional impacts, as well as the impact on environmentally sensitive objects. For possible major environmental impacts, should
Carry out special research; for the existence of major environmental constraints, special demonstrations should be carried out.
1.0.6 The environmental impact assessment of hydropower projects should comply with the current industry standard "General Outline of Technical Guidelines for Environmental Impact Assessment of Construction Projects" HJ 2.1
And the relevant regulations of HJ/T 88 of "Environmental Impact Assessment Technical Guidelines for Water Conservancy and Hydropower Engineering", mainly including the following contents and requirements.
1 Collect existing relevant data and investigate the environmental status quo of the area that the project may affect.
2 Identify environmental impact factors, clarify environmental protection goals, and screen evaluation factors.
3 Draft evaluation grade and evaluation scope.
4 Analyze the environmental rationality of the project plan.
5 Predict and evaluate the possible environmental impact of the recommended engineering scheme.
6 Propose environmental protection countermeasures and environmental monitoring plans, and conduct environmental impact and economic profit and loss analysis.
7 Put forward environmental impact assessment conclusions and compile environmental impact assessment documents. The environmental impact report catalog of hydropower projects shall comply with this regulation
Regulations in Appendix A of the Fan.
1.0.7 The environmental impact assessment of reconstruction and expansion projects shall be based on the retrospective assessment of the environmental impact of the original project, and the project should be predicted and evaluated.
Project reconstruction and expansion may have superimposed impacts on the environment, and propose the treatment of the original environmental pollution and ecological damage related to the project
Countermeasures.
1.0.8 For projects that have carried out "three supplies and one leveling" and other construction projects, the environmental protection implementation of "three supplies and one leveling" should be adjusted.
check. The investigation content should mainly include the design changes of the project plan and its environmental rationality, the actual environmental impact brought by the project construction,
And the implementation and effects of the "three simultaneous" system of environmental protection measures.
1.0.9 In addition to this code, the environmental impact assessment of hydropower projects should also comply with the current relevant national standards.
2 term
2.0.1 Environmental impact of hydropower project
The impact of construction, operation and resettlement of hydropower projects on the environment, including direct and indirect impacts, has beneficial impacts
Impact and adverse effects, reversible effects and irreversible effects.
2.0.2 Environmentally sensitive object
Hydropower projects may involve various natural and cultural protected areas, ecologically sensitive areas, social concern areas, protected species and their important habitats.
Environment, various water intakes, concentrated settlements, etc.
2.0.3 environmental protection objective
The environmental quality, ecological functions, protection requirements of environmentally sensitive objects and other related environmental
Related requirements.
2.0.4 cumulative impact
The joint operation of hydropower projects with upstream and downstream cascade power stations or reservoirs, water transfer projects, etc. will affect the hydrological situation, water temperature, and aquatic ecology in time.
The superposition of impacts in time and space and the resulting environmental consequences.
2.0.5 hydrological regime
The temporal and spatial changes and trends of hydrological elements such as river flow, velocity, water level, and sediment.
2.0.6 water reduced reach
The section where the flow of the river downstream of the dam site is reduced due to the diversion of hydropower projects for power generation is usually the section between the dam site and the tail water of the power station.
2.0.7 Local climate of the reservoir
The climate of a small area in the reservoir area of a hydropower project affected by changes in the underlying surface and the water and heat transport conditions of the water body. The characteristic elements mainly include temperature,
Humidity etc.
2.0.8 drawdown area of reservoir
The area along the bank of the reservoir inundated area is exposed due to the periodic fluctuation of the operating water level of the reservoir.
2.0.9 ecological operating scheme
In order to maintain the functions of the ecological environment, improve the quality of the ecological environment, and bring into play the benefits of the ecological environment, the
The power station operation and reservoir operation method adopted to meet the requirements of ecological water demand, environmental water demand, estuary salt pressure, sediment transport and other requirements.
3 Evaluation grade division and evaluation scope
3.1 General rules
3.1.1 The environmental impact assessment of a hydropower project shall be based on the characteristics of the project, the environmental characteristics of the area and the degree of environmental sensitivity, respectively, according to the environmental requirements.
According to the depth requirements of the corresponding level, the investigation and evaluation work shall be carried out.
3.1.2 The environmental impact assessment of a hydropower project shall be based on the characteristics of the project, the degree of impact, the distribution of environmentally sensitive objects, and the relevant environment.
The synergy between the influences of the elements, comprehensively determine the evaluation scope of each environmental element, and use the national standard coordinate system to draw the evaluation scope map.
3.2 Hydrological situation
3.2.1 The hydrological situation evaluation grade determination shall be based on the scale of the affected river and the regulation performance of the reservoir, and shall be implemented in accordance with the regulations in Table 3.2.1.
3.2.2 When the following situations exist in the hydropower project, the hydrological situation evaluation level should be increased by one level.
1 When the hydropower project adopts water diversion or mixed development, which results in water reduction in the river.
2 When there are annual regulation and above regulation performance reservoirs upstream of the seasonal regulation reservoir, which causes superimposed influence on the hydrological situation.
3 When the hydropower project affects the tidal reach of the big river, it causes the salt tide to be retroactively affected.
4 When the assessment waters involve environmentally sensitive areas.
3.2.3 The scope of hydrological situation assessment shall include the main and tributary streams of the reservoir area affected by the project, the river section below the dam, and the river section to be protected as a fish habitat.
Among them, the evaluation scope of the river section under the dam should be based on the regulation performance of the reservoir, the confluence of downstream tributaries, the construction and operation of the power station, and environmentally sensitive objects.
The distribution is determined comprehensively.
3.3 Water temperature
3.3.1 The water temperature evaluation grade shall be determined according to the water temperature sensitivity of the affected river and the water temperature distribution type of the reservoir, and shall be carried out in accordance with the provisions of Table 3.3.1.
Row. The type of reservoir water temperature distribution should be judged in accordance with the current industry standard "Water Temperature Calculation Specification for Hydropower Projects" NB/T 35094.
2 Generally refers to situations other than sensitive.
3.3.2 The scope of water temperature evaluation shall include the main and tributary reaches of the reservoir area and the reach below the dam. Among them, the evaluation scope of the river section under the dam should be based on the reservoir water
The type of temperature distribution and the confluence of downstream tributaries, the construction and operation of power stations, and the distribution of water temperature sensitive objects are comprehensively determined.
3.4 Surface water quality
3.4.1 The evaluation level of surface water quality shall be determined according to the pollution load level of the evaluated river section and the regulation performance of the reservoir, and shall be implemented in accordance with the provisions of Table 3.4.1.
3.4.2 When the following conditions exist in the hydropower project, the evaluation level of surface water quality shall be increased by one level.
1 When the assessed river reaches a drinking water source protection area.
2 On medium-load or high-load rivers, hydropower projects adopt diversion or mixed development to reduce water flow in the river.
3.4.3 The scope of surface water quality evaluation should be consistent with the scope of hydrological situation evaluation.
3.5 Groundwater environment
3.5.1 Groundwater environmental assessment grade determination should be based on the current industry standard "Environmental Impact Assessment Technical Guidelines for Groundwater Environment" HJ 610
The relevant regulations of the Class III construction projects in the implementation of the.
3.5.2 The scope of groundwater environmental assessment shall include the distribution area of groundwater environmental sensitive objects related to the project, and reflect the area underground
Current status of water environment and basic flow field characteristics.
3.6 Aquatic ecology
3.6.1 The level of aquatic ecological evaluation shall be determined according to the sensitivity of the aquatic ecology of the affected river and the range of the affected water area, and shall be carried out in accordance with the provisions of Table 3.6.1.
Row. The sensitivity of aquatic ecology should be selected in accordance with the relevant provisions of the current industry standard "Ecological Impact of Environmental Impact Assessment Technical Guidelines" HJ 19
Take the ecologically sensitive areas related to the protection of aquatic ecosystems to determine, and incorporate the aquatic germplasm resource protection areas into important aquatic ecologically sensitive areas.
3.6.2 The scope of aquatic ecological assessment should be based on the hydrological situation, water temperature and the impact scope of changes in surface water quality, and fish protection in the watershed where the project is located
Complete the required range of life history and comprehensively determine the range of influence of the aquatic ecosystem. The key assessment scope should include the project’s impact on the reach
Trunk and tributary streams and river sections intended to be protected as fish habitats.
3.7 Terrestrial ecology
3.7.1 The determination of the terrestrial ecological evaluation grade should be based on the terrestrial ecological sensitivity of the affected area, the reservoir inundation and the project area, according to the table
The provisions of 3.7.1 shall be implemented. The sensitivity of terrestrial ecology should be in accordance with the current industry standard "Ecological Impact of Environmental Impact Assessment Technical Guidelines" HJ 19
Relevant regulations select ecologically sensitive areas related to the protection of terrestrial ecosystems for determination.
3.7.2 The scope of terrestrial ecological assessment shall include the inundated area of the reservoir, the affected area around the reservoir, the affected area on both banks of the downstream reach of the dam, and the pivot
The project construction area, the resettlement area and the area around the reservoir are planned to be protected as the protected species habitat. According to the needs of the evaluation, it can be expanded to
Complete ecological unit. When the project involves terrestrial ecological sensitive areas, the sensitive areas should be included in the evaluation scope as a whole.
3.8 Atmospheric environment
3.8.1 The atmospheric environmental impact of hydropower projects should be determined in accordance with the current industry standard "Environmental Impact Assessment Technical Guidelines for Atmospheric Environment" HJ 2.2
The third level is evaluated.
3.8.2 The scope of atmospheric environment assessment shall include the area directly affected by the construction of the pivotal project and the distribution area of sensitive objects of the atmospheric environment.
The boundary of the construction area is 500m outwards, and.200m on each side of the center line of the construction road.
3.9 Acoustic environment
3.9.1 The sound environment assessment grade shall be determined in accordance with the relevant regulations of HJ 2.4 of the current industry standard "Technical Guidelines for Environmental Impact Assessment, Acoustic Environment".
Executed.
3.9.2 The scope of acoustic environment assessment should include the area directly affected by the construction of the pivotal project and the distribution area of sensitive objects of the acoustic environment.
The boundary of the work area is.200m outwards, and.200m on both sides of the centerline of the construction road.
4 Engineering investigation
4.1 Planning Overview
4.1.1 The engineering survey should collect the physical geography of the basin, such as topography, meteorology, river system, runoff, flood and sediment characteristics, etc.
And economic and social development status.
4.1.2 The project investigation should understand the river hydropower planning and approval process, recommend the planning scheme and the overview of the planning implementation opinions, and the planning implementation situation.
It also collects the technical and economic indicator tables of the recommended planning scheme, the river basin water system diagram, the plan layout plan, and the longitudinal section layout plan.
4.1.3 The project investigation should understand the environmental impact assessment of river hydropower planning and the retrospective assessment and review process of the environmental impact of hydropower development.
Collect the evaluation documents and the main conclusions of the review opinions, investigate the overall layout and implementation of environmental protection measures, and the impact on the environmental protection of the project
Requirements and other content.
4.2 Project situation
4.2.1 The engineering survey shall collect the latest engineering design results at the environmental impact assessment stage, engineering feasibility study reports and other technical documents, and re
Point to collect information, data, maps and other information related to environmental protection.
4.2.2 The main project survey responds to the project's geographic location, development tasks, construction necessity, project comparison and selection, and recommended projects
Investigate basic conditions such as scale, development method, project composition, project layout and main buildings, and collect or produce project features.
Charts such as performance tables, project composition tables, geographic location maps, and hub layout diagrams. The main characteristics table of the hydropower project shall comply with the appendix B of this code
Regulations.
4.2.3 Project construction planning investigation shall deal with construction diversion, general construction layout, permanent and temporary land occupation for construction, construction of factory facilities, construction
Investigate the transportation, material yard planning, waste slag yard planning, construction technology, major engineering quantities and total construction progress, and receivable
Collection of drawings of construction external traffic, construction general layout, etc.
4.2.4 The investigation of the initial water storage plan of the reservoir should deal with the initial water storage period of the reservoir, the types of discharge facilities, the layout plan, and the discharge capacity.
Investigate the initial storage level and discharge flow.
4.2.5 The investigation of the project operation plan should deal with the operation mode of the reservoir and power station, the change of the reservoir water level in a typical year and a typical day, the storage,
The outflow flow process and the water level flow relationship curve of the engineering design section are investigated.
4.2.6 The survey of resettlement planning should deal with the scope of land acquisition for construction, the physical indicators of sub-administrative regions, the resettlement of rural resettlers, and the relocation of urban markets and towns.
Investigations should be conducted on the construction, treatment of professional projects, and clearance of the bottom of the reservoir, and a map of the inundation area of the reservoir, a plan of resettlement, and residents’ plans should be collected.
Point construction master plan, urban market town relocation master plan, professional project rehabilitation plan master plan and other drawings.
4.2.7 The investigation of the environmental protection of the project should respond to the project, the project with environmental protection function in the hub project and resettlement planning and design,
Investigate the environmental protection measures taken and their effects.
4.2.8 The survey of reconstruction and expansion projects should collect the project composition, main economic indicators and other engineering characteristics of the original project.
Environmental protection measures and their effects, the construction content of the proposed project, and the supporting relationship with the original project, etc.
4.2.9 Project surveys such as "three links and one leveling" should understand the composition of "three links and one leveling" and the relationship with the main project, and collect the "three links and one leveling".
Environmental impact assessment documents and their approval opinions for projects such as “Ping” and other projects, investigate project implementation and project design changes, and have adopted
Environmental protection measures and their effects.
5 Engineering analysis and environmental impact identification
5.1 General provisions
5.1.1 The environmental impact assessment of a hydropower project shall be based on the engineering analysis, according to the composition of the environmental elements in the engineering area and the relationship between the engineering functions.
Carry out environmental impact factor analysis, environmental impact identification and evaluation factor screening.
5.1.2 The environmental impact assessment of hydropower projects shall be based on the analysis of environmental impact factors, and identify the nature and impact of each environmental element
Degree, screening and determining evaluation factors, and clarifying the focus of environmental impact assessment work.
5.2 Engineering analysis
5.2.1 The engineering analysis shall respond to the compliance and coordination of hydropower engineering and environmental protection laws, regulations, policies and environmental protection related plans,
The environmental rationality of the project plan and the environmental impact factors of the project are analyzed.
5.2.2 Compliance analysis should be based on the national hydropower development and sustainable development strategy requirements, combined with project development tasks and comprehensive benefits,
Engineering and national and local national economic and social development planning, major function zone planning, ecological function zoning, environmental protection planning, and
Analyze the compliance of river hydropower planning and its environmental impact assessment, and retrospective assessment of environmental impact of hydropower development.
5.2.3 Coordination analysis The coordination between the project and the water conservancy, shipping and other related plans in the basin should be analyzed.
5.2.4 The environmental rationality analysis of the project plan of the hub should be based on the environmental constraints, the degree of environmental impact, etc., on the dam site, plant site, and dam site.
Analyze the environmental rationality of the type and the layout of the hub, the normal storage level and the operation and dispatch of the reservoir, and clarify the intervention effects of the environmental impact assessment.
The process of comparison and optimization of engineering schemes.
5.2.5 The rationality analysis of the construction planning environment should be based on the degree of comprehensive utilization of construction land and earth and stone, the scope and type of construction land occupation,
The degree of impact on important environmentally sensitive objects, the difficulty of protection technology and the investment, etc., the general layout of construction, construction transportation, materials, etc.
Analyze the environmental rationality of yard planning, slag yard planning, and initial water storage plan of the reservoir.
5.2.6 Analysis of the suitability of the resettlement environment to deal with the environmental constraints existing in the resettlement planning of rural resettlement, urban town relocation and construction
Factors, as well as topographic and geological conditions, water and soil resource conditions, environmental conditions, etc., on the suitability of the resettlers’ production and development and relocation and resettlement.
analysis.
5.3 Analysis of environmental impact factors
5.3.1 The analysis of environmental influence factors should deal with the ecological influence factors and pollution influence factors existing in the construction, operation and resettlement of the pivotal project
Analyze the impact method, scope and nature of the impact, and have relevant measures in the engineering design, process and effect analysis, material
Based on the balance analysis, the pollution source intensity calculation is carried out.
5.3.2 The analysis of pollution influencing factors should focus on wastewater and sewage, dust and waste gas, noise in the construction, operation and resettlement of the pivotal project.
Analyze the generation links, generation time, pollutant types and properties, and existing treatment measures of sound, solid waste, etc., and calculate
The production, discharge, and main pollutant concentration under normal and abnormal conditions.
5.3.3 The analysis of ecological influencing factors should focus on factors such as construction land occupation, initial reservoir storage, project operation, dam obstruction, resettlement, etc.
Analyze the impact object, impact scope, impact path, impact time, and nature of impact.
5.3.4 The analysis of environmental influence factors should adopt analogy method, mechanism analysis method, etc., and the calc...
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