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HJ 2.2-2018: PDF in English
HJ 2.2-2018
National Environmental Protection Standard of the People's Republic
Replace HJ 2.2-2008
Technical guidelines for environmental impact assessment
Atmospheric Environment
Technical guidelines for environmental impact assessment
-Atmospheric environment
Ministry of Ecology and Environment
Published on.2018-7-31
2018-12-1 Implementation
Content
Preface II
1 Scope 1
2 Normative references 1
3 Terms and Definitions..1
4 General..2
5 Evaluation level and evaluation scope are determined..5
6 Survey and evaluation of current environmental air quality 7
7 Pollution Source Survey..9
8 Atmospheric environmental impact prediction and evaluation 10
9 Environmental Monitoring Plan. 16
10 Conclusions and recommendations for atmospheric environmental impact assessment.17
Appendix A (Normative Appendix) Recommended Model List..19
Appendix B (Normative Appendix) Recommended Model Parameters and Descriptions..21
Appendix C (Normative Appendix) Basic Contents and Charts of Atmospheric Environmental Impact Assessment. 25
Appendix D (informative) Air pollutant concentration reference limit for other pollutants..38
Appendix E (informative) Self-inspection table for atmospheric environmental impact assessment of construction projects..39
Foreword
To implement the Environmental Protection Law of the People's Republic of China, the Environmental Impact Assessment Law of the People's Republic of China
Law on Prevention and Control of Gas Pollution and Regulations on Environmental Protection Management of Construction Projects to Prevent and Control Air Pollution, Improve Environmental Quality, and Guide Atmospheric Environmental Impacts
Evaluation work, the development of this standard.
This standard specifies the general principles, contents, working procedures, methods and requirements for atmospheric environmental impact assessment.
This standard applies to atmospheric environmental impact assessment of construction projects. The planned atmospheric environmental impact assessment can be used as reference.
This standard is the second revision of the Technical Guidelines for Environmental Impact Assessment (HJ/T 2.2-93), the first revision.
For the Environmental Impact Assessment Technical Guidelines Atmospheric Environment (HJ 2.2-2008). The main revisions are.
-- Adjust and supplement the relevant terms and definitions;
-- Improved evaluation level determination method;
-- Simplified monitoring of current environmental air quality;
-- Simplified the evaluation content of the three-level evaluation project;
-- Increased atmospheric environmental impact prediction and evaluation methods for secondary pollutants;
-- Increased atmospheric environmental impact assessment requirements for compliance areas and non-compliance areas;
-- Improved method for determining the distance of the atmospheric environment;
-- Increased the accounting content of pollutant emissions;
-- Increased environmental monitoring program requirements;
-- Supplement and improve the appendix.
Appendix A to Appendix C of this standard are normative appendices, and Appendix D and Appendix E are informative appendices.
From the date of implementation of this standard, the Technical Guidelines for Environmental Impact Assessment (Atmospheric Environment) (HJ 2.2-2008) shall be abolished.
This standard is formulated by the Environmental Impact Assessment Department of the Ministry of Ecology and Environment and the Science and Technology Standards Department.
This standard is mainly drafted by. Environmental Engineering Evaluation Center of the Ministry of Environmental Protection, China Academy of Environmental Sciences, China Environmental Monitoring Center.
This standard was approved by the Ministry of Ecology and Environment on July 30,.2018.
This standard has been implemented since December 1,.2018.
This standard is explained by the Ministry of Ecology and Environment.
Environmental Impact Assessment Technical Guidelines Atmospheric Environment
1 Scope of application
This standard specifies the general principles, contents, working procedures, methods and requirements for atmospheric environmental impact assessment.
This standard applies to atmospheric environmental impact assessment of construction projects.
The planned atmospheric environmental impact assessment can be used as reference.
2 Normative references
This standard refers to the following documents or their terms. For undated references, the latest edition applies to this standard.
GB 3095 Ambient Air Quality Standard
HJ 2.1 General Outline of Technical Guidelines for Environmental Impact Assessment of Construction Projects
HJ 130 Technical Guidelines for Planning Environmental Impact Assessment
HJ 663 Technical Specifications for Ambient Air Quality Assessment (Trial)
HJ 664 Technical Specifications for Environmental Air Quality Monitoring Points (Trial)
HJ 819 General Guidelines for Self-Monitoring Technical Units of Sewage Units
HJ 942 General Regulations for the Application and Issuance of Pollution Discharge Permits
"Notice on the Issuance of the Catalogue of Highly Contaminated Fuels" (National Environmental Regulations [2017] No. 2)
"Catalogue of Classified Management of Environmental Impact Assessment of Construction Projects"
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Ambient air protection target
Refers to nature reserves, scenic spots and other areas that require special protection within the scope of evaluation according to the provisions of GB 3095.
The area, the residential area in the second type of district, the cultural area and the area where the population is concentrated in the rural area.
3.2
Classification of air pollutants
Pollutants emitted by atmospheric pollution sources are classified into particulate pollutants and gaseous pollutants according to their existence.
According to the generation mechanism, it is divided into primary pollutants and secondary pollutants. It is directly produced by human or natural activities and is directly discharged into the ring by pollution sources.
The pollutants in the environment are called primary pollutants; the primary pollutants discharged into the environment change under the influence of physical and chemical factors, or with the environment.
The new pollutant formed by the reaction of other substances in the process is called secondary pollutant.
3.3
Basic air pollutants
Refers to the basic project pollutants specified in GB 3095. Including sulfur dioxide (SO2), nitrogen dioxide (NO2), respirable particulate matter
(PM10), fine particulate matter (PM2.5), carbon monoxide (CO), ozone (O3).
3.4
Other pollutants other air pollutants
Refers to other project pollutants other than basic pollutants.
3.5
Abnormal discharge
Refers to the discharge of pollutants under abnormal conditions such as open parking (work, furnace), equipment overhaul, and abnormal operation of process equipment in the production process.
And pollutant emission control measures fail to achieve emissions under the conditions of efficiency.
3.6
Air quality model
Refers to a mathematical model that uses numerical methods to simulate the physical diffusion and chemical reactions of pollutants in the atmosphere, including Gaussian diffusion models and regions.
Photochemical grid model.
Gaussian diffusion model. also called Gaussian smoke group or smoke flow model, referred to as Gaussian model. Using a non-grid, simplified transport diffusion algorithm, no
There are complex chemical mechanisms, which are generally used to simulate the transport and diffusion of primary pollutants, or to simulate secondary pollutants through a simple chemical reaction mechanism.
Regional photochemical grid model. referred to as grid model. Adopt complex atmospheric physics (advection, diffusion, boundary layer, cloud, precipitation,
Dry deposition, etc.) and atmospheric chemistry (gas, liquid, aerosol, heterogeneous) algorithms and gridded transport chemical conversion models, generally used for modulo
Air pollutant transport and chemical conversion at the proposed city and regional scale.
3.7
Recommended model
Refers to the environmental model selected by the competent department of ecological environment in accordance with certain working procedures and published in the form of a recommendation list. Included in the recommendation
The environmental model of the directory is referred to as the recommended model. An alternative model can be used when the applicability of the recommended model does not suffice. Alternative models are generally required
It can be used after being evaluated by experts in the model field and approved by the competent department of ecological environment.
See Appendix A and Appendix B for recommended models and usage specifications for this guide.
3.8
Short-term concentration
Refers to the average mass concentration of a pollutant with an evaluation period of 24 h or less, including 1 h average mass concentration and 8 h average mass concentration.
And 24 h average mass concentration (also known as daily average mass concentration).
3.9
Long-term concentration
Refers to the average mass concentration of a pollutant for an evaluation period greater than or equal to 1 month, including the monthly average mass concentration, the seasonal average mass concentration, and
Annual average mass concentration.
4 General
4.1 Work tasks
Through surveys, predictions, etc., the project will be arranged after the construction phase, production operation and service expiration (which can be selected according to the project).
The extent, extent and frequency of the effects of atmospheric pollutants on ambient air quality are analyzed, predicted and evaluated, and the site selection and selection of the project
Emissions schemes, air pollution control facilities and preventive measures development, emissions accounting, and other related engineering design, project implementation environment
Provide scientific evidence or guidance for monitoring, etc.
4.2 Working procedures
4.2.1 Phase 1. The main tasks include research related documents, project pollution source survey, environmental air protection target survey, evaluation factors
Screening and evaluation criteria are determined, regional meteorological and surface feature surveys are collected, regional terrain parameters are collected, and evaluation grades and evaluation ranges are determined.
4.2.2 The second phase. The main work is carried out according to the evaluation level requirements, including the investigation and verification of pollution sources related to project evaluation.
Combined forecasting model, environmental quality status survey or supplementary monitoring, collecting basic data such as meteorological and surface parameters required to establish the model, and determining the pre-determination
Test content and forecasting plan, and carry out atmospheric environmental impact prediction and evaluation work.
4.2.3 Phase III. The main tasks include the development of environmental monitoring plans, the conclusions and recommendations of atmospheric environmental impact assessment, and the completion of environmental impact.
The preparation of the evaluation document, etc.
4.2.4 The working procedures of atmospheric environmental impact assessment are shown in Figure 1. The basic contents and specifications of each working phase are shown in Appendix C.
Evaluation work begins
Preliminary forecast
(estimation mode)
Evaluation level determination
Pmax 10%
Project pollution source
survey
Evaluation factor and evaluation
Standard determination
Further investigation of pollution sources
(when necessary)
Secondary or tertiary evaluation
Determine the scope of evaluation
Model basic data
collect
Primary evaluation
Pollution source further
survey
Determine forecast content
And program
Atmospheric environmental impact prediction
Environmental Impact Assessment Conclusions and Recommendations
End of evaluation
Select predictive model
Atmospheric environmental impact assessment
Improvements
And suggestions
Environmental quality
Check or supplement monitoring
Environmental quality status survey or supplement
Charge monitoring (if necessary)
Ambient air protection
Target survey
Regional meteorology and surface
Feature survey
Pmax 1%
Secondary evaluation
Three-level evaluation
no Yes
Environmental monitoring plan
Collecting regional terrain
parameter
Figure 1 Atmospheric environmental impact assessment work procedures
5 Evaluation level and evaluation scope determination
5.1 Environmental Impact Identification and Evaluation Factors Screening
5.1.1 Identify the atmospheric environmental impact factors according to the requirements of HJ 2.1 or HJ 130, and screen out the atmospheric environmental impact assessment factors. Atmospheric ring
The environmental impact assessment factors are mainly the basic pollutants and other pollutants emitted by the project.
5.1.2 When the annual emissions of SO2 and NOx emitted by the construction project are greater than or equal to 500 t/a, the evaluation factor should increase the secondary PM2.5, see
Table 1.
5.1.3 When the annual emissions of SO2, NOx and VOCs emitted by the planned project reach the amount specified in Table 1, the evaluation factor should be increased by two.
PM2.5 and O3.
Table 1 Screening of secondary pollutant evaluation factors
Category Pollutant Emissions/(t/a) Secondary Contaminant Evaluation Factor
Construction project SO2 NOx ≥ 500 PM2.5
Planning project
SO2 NOx ≥ 500 PM2.5
NOx VOCs ≥.2000 O3
5.2 Determination of evaluation criteria
5.2.1 Determine the environmental quality standards and corresponding pollutant discharge standards applicable to each evaluation factor. Among them, the environmental quality standard is selected.
Ambient air quality concentration limits in GB 3095, if existing local environmental quality standards, the concentration limits in the local standards should be used.
5.2.2 For the pollutants not included in GB 3095 and local environmental quality standards, refer to the concentration limits in Appendix D.
5.2.3 For pollutants not included in the above standards, please refer to the environmental quality concentration limits issued by other countries or international organizations.
The baseline value, but should be stated and implemented with the consent of the competent ecological environment authority.
5.3 Evaluation level judgment
5.3.1 Select the main pollutants and emission parameters for the normal discharge of the project pollution source, and use the estimation model in the recommended model of Appendix A.
Calculate the maximum environmental impact of the project's pollution source, and then grade it according to the evaluation work classification criteria.
5.3.2 Evaluation work classification method
5.3.2.1 According to the preliminary investigation results of the project pollution sources, calculate the maximum ground air quality concentration of the main pollutants discharged from the project.
Rate Pi (i-th pollutant, referred to as "maximum concentration ratio"), and the ground air mass concentration of the ith pollutant reaches the standard value
The maximum distance D10 corresponding to 10%. Where Pi is defined in equation (1).
Where. Pi -- the maximum surface air mass concentration of the i-th pollutant, the percentage, %;
Ci -- maximum 1 h surface air mass concentration of the ith pollutant calculated using the estimation model, μg/m3;
C0i -- Ambient air quality concentration standard for the ith pollutant, μg/m3. Generally choose 1 h in GB 3095, the average quality is thick
The secondary concentration limit of the degree. If the project is located in a type of ambient air functional zone, the corresponding primary concentration limit should be selected; it is not included in the standard.
For contaminants, use 5.2 to determine the average mass concentration limit for each evaluation factor of 1 h. For only 8 h average mass concentration limit, daily average
The mass concentration limit or the annual average mass concentration limit can be converted into 1h average mass concentration limit by 2 times, 3 times and 6 times respectively.
5.3.2.2 Projects that prepare environmental impact reports When using the estimation model to calculate the evaluation level, the terrain parameters should be entered.
5.3.2.3 The evaluation level is divided according to the classification criteria in Table 2. The maximum ground air mass concentration rate Pi is calculated according to formula (1), such as
The number of contaminants i is greater than 1, taking the largest Pmax of the P values.
Table 2 Evaluation Level Discrimination Table
Evaluation work rating evaluation work grading criterion
Primary evaluation Pmax ≥ 10%
Secondary evaluation 1% ≤ Pmax < 10%
Three-level evaluation Pmax < 1%
5.3.3 The evaluation of the evaluation level shall also comply with the following provisions.
5.3.3.1 When there are multiple sources of pollution for the same project (two or more, the same below), the evaluation level is determined according to each pollution source, and the evaluation is taken.
The highest level is used as the evaluation level of the project.
5.3.3.2 Multi-source projects for high-energy-consuming industries such as electricity, steel, cement, petrochemical, chemical, flat glass, and colored, or use high pollution
The fuel-based multi-source project and the project evaluation level for the preparation of the environmental impact report are upgraded by one level.
5.3.3.3 For grade highways and railway projects, the main centralized emission sources (such as service areas and stations air pollution sources) along the project line
The released pollutants are calculated for their evaluation level.
5.3.3.4 For urban road projects such as urban express roads and trunk roads with new one-kilometer and above tunnel projects, the main tunnels according to the project tunnel
Pollutants discharged from wind shafts and tunnel exits are evaluated for their rating.
5.3.3.5 For the hub and trunk airport projects of new construction, relocation and flight area expansion, airport aircraft take-off and landing and related auxiliary facilities emissions should be considered.
The environmental impact of the source on the surrounding cities, the evaluation level takes one level.
5.3.3.6 Determine the evaluation level and explain the calculation parameters and judgment basis of the estimation model. For related content and format requirements, see C.1 in Appendix C.
5.4 Determination of the scope of the evaluation
5.4.1 The first-level evaluation project determines the scope of atmospheric environmental impact assessment based on the farthest impact distance (D10%) of pollutants discharged from the construction project.
That is, the project site is centered on the area, and the rectangular area of D10% from the factory boundary is used as the atmospheric environmental impact assessment range. When D10% exceeds 25 km
When determining, the evaluation range is a rectangular area with a side length of 50 km; when D10% is less than 2.5 km, the evaluation range has a side length of 5 km.
5.4.2 Secondary evaluation project The atmospheric environmental impact assessment scope is 5 km long.
5.4.3 The three-level evaluation project does not need to set the scope of atmospheric environmental impact assessment.
5.4.4 For the hub and trunk airport projects of new construction, relocation and flight area expansion, the evaluation scope should also consider the affected surrounding cities.
The maximum edge length is 50 km.
5.4.5 The planned atmospheric environmental impact assessment scope starts from the boundary of the planning area, and the farthest impact distance of the pollutants discharged by the extension planning project
Off (D10%) area.
5.5 Evaluation base year screening
According to the evaluation of the required environmental air quality status, meteorological data and other data availability, data quality, representative and other factors, choose
A calendar year with relatively complete data in the past 3 years is used as the base year for evaluation.
5.6 Environmental Air Protection Target Survey
5.6.1 The main environmental air protection targets within the scope of the atmospheric environmental assessment of the survey project. Mark and list in the basemap with geographic information
Give the name of the main protection object in the ambient air protection target, the content of the protection, the functional zoning of the atmospheric environment, and the phase of the project site.
Information about distance, bearing, coordinates, etc.
5.6.2 For the content and format requirements of the environmental air protection target survey, see C.2 in Appendix C.
6 Investigation and evaluation of current environmental air quality
6.1 Content and purpose of the survey
6.1.1 First-level evaluation project
6.1.1.1 Investigate the environmental quality compliance of the project area as the basis for judging whether the project area is the compliance area.
6.1.1.2 Environmental quality monitoring data with evaluation factors of environmental quality standards within the scope of investigation and evaluation or supplementary monitoring for evaluation
The current state of environmental quality of pollutants in the project area, as well as the current environmental protection target and the environmental quality of the grid points.
6.1.2 Secondary evaluation project
6.1.2.1 Check the environmental quality of the project area.
6.1.2.2 Environmental quality monitoring data with evaluation factors of environmental quality standards within the scope of investigation and evaluation or supplementary monitoring for evaluation
The current status of environmental quality of pollutants in the project area.
6.1.3 Three-level evaluation project
Only investigate the environmental quality of the project area.
6.2 Data source
6.2.1 Current environmental quality data of basic pollutants
6.2.1.1 The project area is judged by the target, and the evaluation base year environment publicly released by the national or local ecological environment authority is given priority.
Data or conclusions in quality announcements or environmental quality reports.
6.2.1.2 Use the monitoring data of the evaluation base year for one year in the national or local environmental air quality monitoring network within the evaluation scope, or adopt
The current status of ambient air quality data publicly released by the competent department of ecological environment.
6.2.1.3 If there is no ambient air quality monitoring network data or publicly released ambient air quality status data within the scope of evaluation, the selector
Ambient air quality city point or area point similar to HJ 664 and geographical proximity to the evaluation area, similar to topography and climatic conditions
Monitoring data.
6.2.1.4 For environmental air protection targets or grid points located in the area of ambient air quality, the current environmental quality of each pollutant may be
Take an ambient air quality area point or back that meets the requirements of HJ 664 and is geographically close to the evaluation area and has similar topography and climatic conditions.
Attraction monitoring data.
6.2.2 Current quality data of other pollutants
6.2.2.1 It is preferred to use the monitoring data of the national and local environmental air quality monitoring network within the evaluation scope for one consecutive year.
6.2.2.2 If there is no ambient air quality monitoring network data or publicly released ambient air quality status data within the scope of evaluation, it may be collected and evaluated.
Historical monitoring data related to other pollutants emitted by the project in the past three years within the price range.
6.2.3 In the absence of the above relevant monitoring data or monitoring data can not meet the evaluation requirements specified in 6.4, it should be supplemented according to the requirements of 6.3
monitor.
6.3 Supplementary monitoring
6.3.1 Monitoring period
6.3.1.1 According to the pollution characteristics of the monitoring factors, select the seasons with heavy pollution to monitor the status quo. Supplementary monitoring should be valid for at least 7 days
data.
6.3.1.2 For some other pollutants that cannot be continuously monitored, the primary air quality concentration can be monitored, and the monitoring time should be used.
The time requirement for the evaluation criteria.
6.3.2 Monitoring points
The local dominant wind direction calculated in the past 20 years is the axial dir...
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| Standard ID | HJ 2.2-2018 (HJ2.2-2018) | | Description (Translated English) | Technical guidelines for environmental impact assessment - Atmospheric environment | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z00 | | Word Count Estimation | 43,443 | | Date of Issue | 2018-07-31 | | Date of Implementation | 2018-12-01 | | Older Standard (superseded by this standard) | HJ 2.2-2008 | | Regulation (derived from) | Ministry of Ecology and Environment Announcement No. 24 of 2018 |
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