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Standard ID | HJ 25.2-2019 (HJ25.2-2019) | Description (Translated English) | Technical guidelines for monitoring during risk control and remediation of soil contamination of land for construction | Sector / Industry | Environmental Protection Industry Standard | Classification of Chinese Standard | Z04 | Classification of International Standard | 13.020 | Word Count Estimation | 16,125 | Date of Issue | 2019 | Date of Implementation | 2019-12-05 | Standard ID | HJ 25.2-2014 (HJ25.2-2014) | Description (Translated English) | Technical guidelines for environmental site monitoring | Sector / Industry | Environmental Protection Industry Standard | Classification of Chinese Standard | Z10 | Word Count Estimation | 16,175 | Date of Issue | 2014/2/19 | Date of Implementation | 2014/7/1 | Older Standard (superseded by this standard) | HJ/T 25-1999 | Quoted Standard | GB 3095; GB 5085.1; GB 5085.2; GB 5085.3; GB 5085.4; GB 5085.5; GB 5085.6; GB 5085.7; GB 14554; GB 50021; HJ/T 20; HJ/T 91; HJ/T 164; HJ/T 166; HJ/T 194; HJ/T 298; HJ 493; HJ 25.1; HJ 25.3; HJ 25.4 | Drafting Organization | Shanghai Academy of Environmental Sciences; Shenyang Institute of Environmental Sciences; Standards Institute for Environmental; Environmental Protection Research Institute of Light Industry; Nanjing Institute of Environmental Sciences Department of Envir | Administrative Organization | Ministry of Environmental Protection | Regulation (derived from) | Ministry of Environmental Protection Notice No. 14 of 2014 | Issuing agency(ies) | Ministry of Environmental Protection | Summary | This standard specifies the principles of site environmental monitoring program, work content and technical requirements. This standard applies to site environmental investigation, environmental monitoring, risk assessment, and soil remediation of contami |
HJ 25.2-2019
(Technical guidelines for soil pollution risk management and repair monitoring on construction land)
National Environmental Protection Standard of the People's Republic of China
Replaces HJ 25.2-2014
Control and Remediation of Construction Site Soil Pollution Risk
Monitoring technical guidelines
Technical guidelines for monitoring during risk control and remediation of
soil contamination of land for construction
2019-12-5 release
2019-12-5 Implementation
Released by the Ministry of Ecology and Environment
Contents
Foreword ... ii
1 Scope ... 1
2 Normative references ... 1
3 Terms and definitions ... 1
4 Basic principles, work content and work procedures ... 2
5 Monitoring plan development ... 3
6 Monitoring point layout ... 4
7 Sample Collection ... 9
8 Sample analysis ... 11
9 Quality control and quality assurance ... 11
10 Preparation of monitoring report ... 12
Foreword
According to the "Environmental Protection Law of the People's Republic of China" and the "Law of the People's Republic of China on Soil Pollution Control",
Physical health, protecting the ecological environment, strengthening environmental protection and management of construction land, standardizing soil pollution risk management of construction land
Control and repair monitoring, develop this standard.
This standard specifies the principles, procedures, work contents and techniques for the management and restoration monitoring of soil pollution risks on construction land.
Claim.
This standard was first published in.2014, and this is the first revision. The main contents of this revision include.
1. The standard name was revised from the Technical Guidelines for Site Environmental Monitoring to the Management and Remediation of Soil Pollution Risks on Construction Land
Guidelines for Monitoring Technology;
2. The scope of application shall be modified accordingly with reference to the standard name;
3. Added the normative reference document "Soil Environmental Quality Construction Land Soil Pollution Risk Control Standard" (GB
36600), updated the relevant standard content of normative references;
4. Added terms and definitions for "soil pollution risk control and restoration", deleted "site" and "contaminated site"
Terms and definitions, modified the terms and definitions of "concerned about pollutants";
5. Modify "Repair Engineering Acceptance" to "Repair Effect Evaluation" and "Deep Soil" to "Lower Soil"
Soil ";
6. Improved the relevant content of the monitoring project and well washing requirements, and refined the vertical sampling interval of soil and evaluation of remediation effect
Monitor layouts and more.
This standard and the following standards belong to a series of environmental protection standards for soil pollution risk management and restoration of construction land.
"Technical Guidelines for Investigation of Soil Pollution on Construction Land" (HJ 25.1);
"Technical Guidelines for Risk Assessment of Soil Pollution on Construction Land" (HJ 25.3);
"Guidelines for Soil Remediation Technology for Construction Land" (HJ 25.4);
"Technical Guidelines for Risk Control of Contaminated Land and Evaluation of Soil Remediation Effect" (HJ 25.5);
"Guidelines for Groundwater Remediation and Risk Management and Control of Contaminated Land" (HJ 25.6).
As of the implementation of this standard, the Technical Guidelines for Site Environmental Monitoring (HJ 25.2-2014) is abolished.
This standard was formulated by the Department of Soil Ecology and Environment, Laws and Standards Department of the Ministry of Ecology and Environment.
The main drafters of this standard. Shenyang Research Institute of Environmental Sciences, Institute of Environmental Standards of the Ministry of Ecology and Environment, Light Industry Environmental Protection
Institute of Environmental Protection, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Shanghai Academy of Environmental Sciences.
This standard was approved by the Ministry of Ecology and Environment on December 5,.2019.
This standard will be implemented as of December 5,.2019.
This standard is explained by the Ministry of Ecology and Environment.
Technical guidelines for soil pollution risk management and repair monitoring on construction land
1 Scope
This standard specifies the basic principles, procedures, work content and
skills requirement.
This standard applies to the investigation of soil pollution on construction land and the assessment of soil pollution risk, risk control, restoration,
Environmental monitoring of activities such as risk management and control effectiveness assessment, restoration effectiveness assessment, and subsequent management.
This standard does not apply to the monitoring of radioactive and pathogenic biological pollution on construction land.
2 Normative references
The content of this standard refers to the clauses in the following documents. For undated references, the valid version applies
For this standard.
GB 3095 Ambient Air Quality Standard
GB 5085 Hazardous Waste Identification Standard
GB 14554 Emission Standard for Odor Pollutants
GB 36600 Soil Environmental Quality Control Standards for Soil Pollution Risk of Construction Land
GB 50021 Geotechnical Engineering Exploration Code
HJ/T 20 Technical Specifications for Sampling and Preparation of Industrial Solid Waste
HJ 25.1 Technical Guidelines for Investigation of Soil Pollution on Construction Land
HJ 25.4 Technical guidelines for soil remediation for construction land
HJ 25.5 Technical Guidelines for Risk Management and Contamination Evaluation of Contaminated Land
HJ/T 91 Technical specifications for surface water and sewage monitoring
HJ/T 164 Technical Specifications for Groundwater Environmental Monitoring
HJ/T 166 Technical Specifications for Soil Environmental Monitoring
HJ/T 194 Technical Specifications for Manual Monitoring of Ambient Air Quality
HJ 298 Technical Specification for Hazardous Waste Identification
HJ 493 Technical regulations for the storage and management of water samples
3 terms and definitions
The following terms and definitions apply to this standard.
3.1
Risk control and remediation of soil contamination
Soil pollution risk management and remediation includes investigation of soil pollution status and assessment of soil pollution risks, risk management and control, repair
Assessment, risk management and control effect assessment, restoration effect assessment, and later management activities.
3.2
Contaminant of concern
Determine the need for soil pollution based on the characteristics of the land pollution, relevant standards and specifications, and stakeholder opinions
Pollutants in environmental surveys and soil pollution risk assessments.
3.3
Soil mixture sample
Refers to the soil sample after the surface layer or the same layer of soil is evenly mixed. The number of sampling points that make up the mixed sample should be 5-20.
4 Basic principles, work content and work procedures
4.1 Basic principles
4.1.1 Principles of relevance
Plot environmental monitoring should be based on the investigation of soil contamination status, soil pollution risk assessment, treatment and restoration, and evaluation of restoration effects.
The purpose and requirements of environmental management at various stages such as assessment and retrospective assessment are carried out to ensure the coordination, consistency and timeliness of monitoring results.
Effectiveness, providing a basis for environmental management of the plot.
4.1.2 Normative principles
Programmatically and systematically standardize the basic principles, working procedures and working methods that should be followed in the environmental monitoring of land plots
Method to ensure the scientificity and objectivity of the land environment monitoring.
4.1.3 Feasibility Principle
Survey and review of soil pollution status and soil pollution risk assessment, governance and restoration, and assessment of remediation effects
In the conditions of monitoring requirements at various stages such as performance assessment, comprehensive consideration of factors such as monitoring costs and technology application levels, to ensure that
The monitoring work was feasible and the follow-up work went smoothly.
4.2 Work content
4.2.1 Survey and monitoring of soil pollution in the plot
The environmental monitoring during the investigation of soil pollution status and the risk assessment of soil pollution, the main work is to use monitoring
Means to identify pollutants of concern and hydrogeological characteristics in soil, groundwater, surface water, ambient air, residual waste
Collect, and comprehensively analyze and determine the types of pollution, the degree of pollution, and the scope of pollution in the plot.
4.2.2 Monitoring of land improvement and repair
Environmental monitoring during land remediation and repair, the main work is the implementation effect of various remediation and repair technical measures
Relevant monitoring carried out, including the monitoring of environmental protection engineering quality and secondary pollutant discharge during the process of remediation
Monitoring.
4.2.3 Evaluation and monitoring of land restoration effect
The environmental monitoring after the completion of the land remediation project is to assess and evaluate the
Whether it has met the identified restoration goals and the relevant requirements raised by the engineering design.
4.2.4 Retrospective Evaluation and Monitoring of Land
After evaluation of the repair effect of the land, within a specific time range, in order to evaluate the land and soil
Environmental monitoring of the environmental impacts of sewage, surface water and ambient air, as well as long-term in situ treatment of the land
Validate environmental monitoring of the effects of physical restoration measures.
4.3 Working Procedure
The working procedures of land environmental monitoring mainly include monitoring content determination, monitoring plan formulation, monitoring implementation and monitoring report
Report preparation. The determination of the monitoring content is to determine the specific work content according to the requirements in 4.2 after the monitoring is started; the monitoring plan is formulated
Including the process of data collection and analysis, determination of monitoring scope, monitoring medium, monitoring project and monitoring work organization, etc.
The implementation includes monitoring point layout, sample collection and sample analysis.
5 Development of monitoring plan
5.1 Data collection and analysis
According to the phased conclusions of the investigation of the soil pollution status of the plot, and consider the monitoring and evaluation of the remediation effect of the plot
Monitoring and retrospective evaluation The purpose and requirements of each stage of monitoring, determine the plot information that should be collected in each stage of monitoring,
It shall include the information obtained in the investigation phase of the soil contamination of the plot and the information collected in the monitoring and supplementary stages.
5.2 Monitoring scope
5.2.1 The monitoring range of the soil pollution status of the plot is the boundary range of the plot initially determined in the previous soil pollution status survey.
Around.
5.2.2 The monitoring scope of the land remediation repair shall include the land remediation scope determined in the design of the remediation repair project, and the
Areas affected by wastewater, waste gas, and residue during remediation.
5.2.3 The monitoring scope of the land remediation effect evaluation shall be consistent with the scope of land remediation and restoration.
5.2.4 The retrospective assessment and monitoring scope of the plot shall include the potential for environmental impact on soil, groundwater, surface water and ambient air
The extent of the impact, and the extent of the area that may be affected by long-term remediation projects.
5.3 Monitoring objects
The monitoring objects are mainly soil, and if necessary, groundwater, surface water, and ambient air should also be included.
5.3.1 Soil
The soil includes the top soil and the lower soil in the plot. The specific depth division of the top soil and the lower soil should be based on
The periodic conclusions of the investigation of the soil pollution status of the plot were determined. The backfill layer present in the plot can generally be used as topsoil.
5.3.2 Groundwater
Groundwater is mainly groundwater within the boundary of the plot or shallow groundwater that flows through the plot to the downstream pooling area. in
In areas where the pollution is heavy and the geological structure is conducive to the migration of pollutants to the lower soil, deep groundwater is monitored.
5.3.3 Surface water
Surface water is mainly surface water flowing through or pooling within the boundary of the plot. For heavily polluted plots, it should also be considered
Downstream pooling area of surface water.
5.3.4 Ambient air
Ambient air refers to the air in the center of the contaminated area of the plot and the air downwind to the main environmentally sensitive points.
5.3.5 Residual waste
Residual waste of the plot should also be considered in the monitoring object of the survey of soil pollution in the plot, mainly including the residual in the plot
Production materials, industrial waste residues, waste chemicals and their pollutants, solid residues left in waste facilities, containers and pipelines
Solid, semi-solid, and liquid materials, and other solid materials that differ significantly from local soil characteristics.
5.3.6 The object of land remediation and repair monitoring should also include substances discharged during the remediation process, such as waste gas, wastewater and waste
Slag etc.
5.4 Monitoring project
5.4.1 Survey and monitoring project of soil pollution in the plot
5.4.1.1 The preliminary sampling and monitoring items for the investigation of soil pollution in the plot shall be in accordance with the requirements of GB 36600 and the preliminary soil pollution status.
The phased conclusions of the survey and the work plan at this stage are determined, and they are determined in accordance with the relevant requirements of HJ 25.1. Possible risks
Hazardous waste monitoring projects shall be determined with reference to relevant indicators in GB 5085.
5.4.1.2 Detailed survey of soil pollution in the land
The characteristics of dyes and plots shall be determined in accordance with the relevant requirements of HJ 25.1.
5.4.2 Land governance and restoration, restoration effect evaluation and retrospective evaluation monitoring project
5.4.2.1 Soil monitoring items are indicators for soil pollution risk assessment that need to be treated and repaired. Groundwater, surface
Water and ambient air monitoring projects shall be determined according to the technical requirements for treatment and restoration.
5.4.2.2 The monitoring project should also consider the pollutants that may be generated during the land remediation and repair process.
The technical requirements of the double process are determined, see relevant requirements in HJ 25.4.
5.5 Organization of monitoring work
5.5.1 Division of monitoring work
The division of labor in monitoring generally includes information collection and arrangement, monitoring plan preparation, monitoring point layout, sample collection and
On-site analysis, sample laboratory analysis, data processing, monitoring report preparation, etc. The undertaking unit should organize according to the monitoring task
Good division of responsibilities within the unit and between cooperating units.
5.5.2 Preparation for monitoring
The preparation of monitoring work generally includes the division of labor, information collection, work plan preparation, and personal protection
Equipment, site surveys, sampling equipment and containers and analytical instruments.
5.5.3 Implementation of monitoring work
The implementation of monitoring work mainly includes the monitoring point layout, sample collection, sample analysis, and subsequent data processing.
And report preparation. In general, the core of the implementation of monitoring work is spot sampling, so on-site spot sampling should be implemented in a timely manner.
Relevant working conditions. In the process of sample collection, preparation, transportation and analysis, the necessary technology and management should be adopted
Measures to ensure the safety protection of monitoring personnel.
6 Monitoring point layout
6.1 Monitoring point layout method
6.1.1 Soil monitoring point layout method
Geographical location, plot boundaries, and work requirements at each stage determined based on the periodic conclusions of the survey of soil pollution in the plot
Seek to determine the range of points. Mark the exact geographic location on the area map or plan map, draw plot boundaries, and
Position the corners of the field accurately. Commonly used monitoring point layout methods for soil environment monitoring of the plot include systematic random distribution
Method, system layout method and partition layout method, see Figure 1.
Figure 1 Schematic diagram of monitoring point layout method
6.1.1.1 For the areas with similar soil characteristics and the same land use function in the plot, the system random distribution method can be used.
Monitoring point layout.
1) The system random distribution method is to divide the monitoring area into several working units of equal area, from which random (random number
To obtain a method that can be used to roll the dice, draw lots, and check the random number table, draw a certain number of work units, and
A monitoring point is arranged in the unit.
2) The number of samples taken should be determined according to the area of the plot, the purpose of monitoring and the use of the plot.
6.1.1.2 If the soil pollution characteristics of the plot are unclear or the original condition of the plot is severely damaged, the system can be used for monitoring
Point layout. The system layout method is to divide the monitoring area into several working units of equal area.
A monitoring point.
6.1.1.3 For the parcels with different land use functions and obvious differences in pollution characteristics, the zoning method can be adopted.
Monitoring point layout.
1) The zoning method is to divide the plot into different plots, and then determine the plots based on the plot area or pollution characteristics.
method.
2) The division of land use functions within a plot is generally divided into production area, office area, and living area. In principle, the production area
The division of units should be based on structures or production processes, including production workshops, raw materials and product storage, and wastewater
And waste slag storage yard, material circulation road in the yard, underground storage structure and pipeline, etc. The office area includes office buildings,
Fields, roads, green spaces, etc., living areas include canteens, dormitories and public buildings.
3) For production areas with similar land use functions and small unit areas, several units can also be combined into a single monitor.
作 UNIT.
6.1.1.4 Setting method of soil control monitoring points
1) In general, soil control monitoring points should be set in the outer area of the plot.
2) The control points can be selected on the four vertical axes in the outer area of the plot.
Sampling points for sampling analysis. For example, due to topography, land use, and the characteristics of pollutant diffusion and migration, etc.
When the soil characteristics are significantly different or the sampling conditions are limited, the monitoring points can be adjusted according to the actual situation.
3) The control monitoring point should try to choose bare soil that has not been disturbed by outside in a certain period of time, and should collect surface soil
For samples, the sampling depth should be the same as that of the top surface soil. Sub-soil samples should also be taken if necessary.
6.1.2 Groundwater monitoring point layout method
If there is groundwater in the plot, the site should be located in the area suspected of being heavily polluted.
Spot downstream. If it is necessary to understand the pollution characteristics of the plot through groundwater monitoring, groundwater runoff within a certain distance
Spots in the downstream catchment area.
System random layout method
6.1.3 Setting method of surface water monitoring points
If there is surface water flowing or pooled in the plot, the surface water should be distributed in the area suspected of being polluted.
Consider locating points downstream of surface water runoff.
6.1.4 Ambient air monitoring point layout method
Place the site in the center of the plot and the main environmentally sensitive points in the downwind direction at that time. For the production workshop, original
Areas where pollution is concentrated, such as storage areas for waste materials or waste residues, should be located in these areas; for organic pollution, foul smell
Plots of contaminated and mercury-contaminated types should be located in areas suspected of being heavily polluted.
6.1.5 Placement of residual waste monitoring points in the plot
In areas where residual waste that is suspected to be hazardous waste and suspicious substances that are significantly different from local soil characteristics are located
Line up.
6.2 Arrangement of monitoring points for soil pollution in the plot
6.2.1 Arrangement of soil monitoring points
6.2.1.1 The layout of preliminary sampling and monitoring points for soil pollution investigation
1) Several working units that may be heavily polluted can be selected as soil according to the use function and pollution characteristics of the original plot
Unit of work for pollutant identification. In principle, the monitoring point should be selected in the center of the work unit or a part with obvious pollution, such as
Production workshop, sewage pipeline, waste storage place, etc.
2) For evenly polluted land (including types and degree of pollution) and heavily damaged land (including land parcels)
Including demolition damage, historical change damage), according to the shape of the plot, a systematic random layout method can be used in each work
The center of the cell is sampled.
3) The number and sampling depth of monitoring points should be investigated according to the area of the plot, the type of pollution, and different functional areas.
Periodic conclusions are confirmed.
4) For each work unit, the division of the surface soil and the underlying soil in the vertical direction should be considered comprehensively.
Factors such as displacement, damage to structures and pipelines, and soil characteristics are determined. Sampling depth should be deducted from surface non-soil hardening
Layer thickness, in principle, 0 ~ 0.5 m surface soil samples should be collected, and lower soil samples below 0.5 m should be collected according to the method of judging and arranging
It is recommended that the soil sampling interval of 0.5 ~ 6 m should not exceed 2 m; at least one soil sample should be collected from different soil layers. Identity
When the thickness of the soil layer is large or there are obvious signs of contamination, increase the sampling points at this level according to the actual situation.
5) Under normal circumstances, the determination of the underlying soil should be determined based on the periodic conclusions of the survey of soil pollution in the plot and the site conditions.
Sampling depth, the maximum depth should be up to the uncontaminated depth.
6.2.1.2 Detailed soil sampling status investigation
1) For evenly polluted land (including types and degree of pollution) and heavily damaged land (including land parcels)
Including demolition damage, historical change damage), the system can be divided into work units using the system layout method.
Center sampling.
2) If there are obvious differences in the use function or pollution characteristics of different areas of the plot, you can investigate the soil pollution status
The information about the original use function and pollution characteristics is divided into work units by the partition layout method.
Center sampling.
3) The area of a single work unit can be determined according to actual conditions, and in principle should not exceed 1600 m2. For area comparison
For small plots, there should be no less than 5 work units. Sampling depth should......
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HJ 25.2-2014
Technical guidelines for environmental site monitoring
People's Republic of China National Environmental Protection Standards
Replacing HJ/T 25-1999
Issued on.2014-02-19
2014-07-01 implementation
Issued by the Ministry of Environmental Protection
Table of Contents
Preface ..II
1. Scope ..1
2 Normative references ..1
3 Terms and Definitions .1
4 basic principles, work content and work procedures .2
5 2 monitoring plan development
6 Monitoring Spot Location 4
7 sample collection ..8
8 Sample Analysis 10
9 Quality control and quality assurance .10
10 monitoring reports prepared .11
Foreword
To implement the "People's Republic of China Environmental Protection Law", to protect the ecological environment, safeguarding human health, strengthening of contaminated sites
To environmental supervision and management, regulate space environmental monitoring, development of this standard.
This standard and contaminated sites belong to the following standard series of environmental standards.
"Technical Guidelines for Environmental Site Investigation" (HJ 25.1-2014);
"Contaminated Sites Risk Assessment Guidelines" (HJ 25.3-2014);
"Contaminated site soil remediation technology Guidelines" (HJ 25.4-2014).
From the date of implementation of the above standards, "Soil Environmental Quality Industrial Risk Evaluation Criteria" (HJ/T 25-1999)
Abolished.
This standard specifies the principles of site environmental monitoring program, work content and technical requirements.
This standard is developed by the Ministry of Environmental Protection Science, Technology organization.
Drafting of this standard. Shenyang Academy of Environmental Sciences, Ministry of Environmental Protection Standards Institute, ring light
Habitat Conservation Institute, Nanjing Institute of Environmental Sciences Department of Environmental Protection, Shanghai Academy of Environmental Sciences.
This standard MEP February 19, 2014 for approval.
This standard from July 1, 2014 implementation.
The standard explanation by the Ministry of Environmental Protection.
Site Environmental Monitoring Technology Guide
1 Scope
This standard specifies the principles of site environmental monitoring program, work content and technical requirements.
This standard applies to environmental site investigation, risk assessment, and soil remediation of contaminated sites environmental engineering supervision, engineering
Acceptance of environmental monitoring, retrospective assessment process.
This standard does not apply to radioactive sites and pathogenic biological pollution monitoring.
2 Normative references
The standard content of the following documents cited in the articles. For undated references, the effective version applies
To this standard.
GB 3095 Ambient Air Quality Standard
GB 5085 Identification standard for hazardous wastes
GB 14554 standard malodorous emissions
Geotechnical engineering exploration standard GB 50021
HJ/T 20 industrial solid waste sampling sample preparation Technical Specifications
HJ/T 91 surface water and wastewater monitoring technical specifications
HJ/T 164 groundwater environmental monitoring technical specifications
HJ/T 166 soil environmental monitoring technical specifications
HJ/T 194 ambient air quality monitoring technical specifications manual
HJ/T 298 Identification of Hazardous Waste Technical Specifications
Conservation and management of technical regulations HJ 493 water quality samples
HJ 25.1 Environmental Site Investigation Technical Guidelines
HJ 25.3 Contaminated Sites Risk Assessment Guidelines
HJ 25.4 contaminated site soil remediation guidelines
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1 site site
The total land within a certain range of soil, groundwater, surface water and land within all structures, facilities and biological
and.
3.2 contaminated sites contaminated site
After potentially contaminated sites for investigation and risk assessment, confirm over pollution hazard to human health or ecological environment can be accessed
Subject to the level of risk sites, also known as land contamination.
3.3 Follow pollutant contaminant of concern
According to the views of stakeholders contaminated sites and site characteristics of interest to determine the need for investigation and risk assessment of pollutants.
3.4 mixed soil sample soil mixture sample
Refers to the surface layer of soil or with soil samples by mixing after the composition of mixed samples of the sampling points should be 5 to 20.
4 basic principles, work content and work procedures
4.1 Basic Principles
4.1.1 Targeted principle
Environmental monitoring of contaminated sites should be assessed for environmental investigation and risk management repair, inspection and engineering assessment Retrospective
The various stages of the purpose and requirements to carry out environmental management to ensure monitoring results representation, accuracy and timeliness, the venue for the ring
Provide the basis for environmental management.
4.1.2 normative principles
The basic principle of procedural and systematic manner regulate environmental monitoring contaminated sites should follow, working procedures and working
Methods to ensure that contaminated sites, environmental monitoring and scientific objectivity.
4.1.3 Feasibility principle
Contaminated sites at various stages to meet the environmental investigation and risk assessment, control repair, engineering and inspection retrospective assessment supervisor
Measured under the conditions required, considering the cost of monitoring, the level of technology and other factors to ensure that monitoring is practicable
And successfully carry out follow-up work.
4.2 The content
4.2.1 Environmental Site Investigation and Monitoring
Environmental site investigation and risk assessment process of environmental monitoring, the main work is the use of monitoring tools to identify soil, ground
Water, surface water, ambient air, the residual waste concerns pollutants and the hydrogeological characteristics, and comprehensive analysis, indeed
Types of pollutants given site, the degree of contamination and pollution range.
4.2.2 Contaminated Sites Rehabilitation Monitoring Control
Contaminated site remediation process control of environmental monitoring, the main work for the implementation of control measures for remediation
Effect undertaken related monitoring, including engineering quality monitoring and control of secondary pollutants involved in the repair process of environmental protection
Monitoring of emissions.
4.2.3 Monitoring contaminated site remediation project acceptance
Environmental monitoring contaminated sites treatment after repair work is completed, the main job is to field assessment and evaluation of governance after restoration
To determine whether the relevant requirements have been the target of repair and design of the proposed project.
A retrospective assessment of contaminated sites 4.2.4 Monitoring
After treatment of contaminated sites restoration project acceptance, within a specific time frame for the evaluation of governance after the repair site
Environmental monitoring of groundwater, surface water and environmental impact of the ambient air carried out, but also includes the site for the long-term in situ
Treatment effects of measures to carry out repair work for environmental monitoring of verification.
4.3 work program
Contaminated sites, environmental monitoring program includes monitoring the work content determining, monitoring plan development, implementation and monitoring of prison
Measurement reporting. Monitoring content is determined after monitoring started to determine the specific content of the work in accordance with the requirements of 4.2; monitoring plan
Including the development of data collection and analysis to determine the scope of monitoring, media monitoring process, monitoring and project monitoring organizations; monitoring
Measuring implementation including monitoring point layout, sample collection and sample analysis process.
5 monitoring plan development
5.1 Data collection and analysis
According to the findings of the site environment, taking into account the treatment of contaminated sites restoration monitoring, engineering acceptance monitoring, Retrospective Review
Assessment monitoring purposes and requirements of each stage, to determine the contaminated sites information should be collected for each phase of the monitoring work, including site
Environmental information and the various stages of the investigation phase obtained by monitoring the supplementary information collected.
5.2 Monitoring range
5.2.1 Environmental Site Investigation and Monitoring in the range of preliminary environmental survey to determine the initial site boundaries.
5.2.2 Contaminated Sites Rehabilitation Monitoring governance should include restoration project design management determined the scope of site remediation, as well as
Governance repair regional waste water, waste gas and waste residue impacts.
Consistent range 5.2.3 site remediation project acceptance range should be monitored and treatment of contaminated sites restoration.
5.2.4 contaminated sites retrospective assessment of the scope of monitoring should include the possibility of groundwater, surface water and ambient air environment produced Movies
Range sound, as well as regional site repair work may affect the long-term treatment of.
5.3 Monitoring objects
Mainly for monitoring soil, it should also include groundwater, surface water and ambient air, if necessary.
5.3.1 Soil
Specific division of soil depth within the site including surface soil and deep soil, surface soil and deep soil should be based on
Site Environmental findings OK. Site present in the hardened layer or layers are generally available as backfill topsoil.
5.3.2 Groundwater
Groundwater or groundwater mainly by underground site to site within the boundaries of shallow groundwater runoff downstream collection area. in
Serious pollution and geological structure of the area is conducive to migration of contaminants into deep soil, then the deep groundwater monitoring.
5.3.3 Surface Water
Surface water flows within the site boundary or surface water collection for contaminated sites should also be considered heavy flows through field
Surface Water downstream collection area.
5.3.4 Ambient Air
Ambient air refers to the air space under air and contaminated sites regional centers winds major environmental sensitive points.
5.3.5 residual waste
Environmental site investigation of the object in space should be considered residual waste, including the venue legacy of the original production
Material, industrial waste, waste chemicals and contaminants remaining in the abandoned facilities, vessels and piping in solid, semi-solid
And a liquid substance, other local soil characteristics significantly different solid substances.
5.3.6 Governance repair site should also include monitoring of target substances control the repair process emissions, such as emissions, waste water and waste
Wait.
5.4 Monitoring Project
5.4.1 Environmental Site Investigation and Monitoring Project
5.4.1.1 Environmental Site Investigation Preliminary sampling and monitoring program should work plan based on preliminary environmental investigation stage and conclusions at this stage
Determined in accordance with the specific requirements HJ 25.1 OK. Hazardous waste may be involved in monitoring the project should refer to the GB 5085
Related indicators OK.
5.4.1.2 Environmental Site Investigation detailed sampling and monitoring of pollutants include site characterization and site environmental investigation to determine the characteristics of the reference
Number shall be determined by HJ 25.1 requirements.
5.4.2 restoration of contaminated sites management, project acceptance and retrospective assessment Monitoring Project
5.4.2.1 Soil monitoring program to determine the risk assessment of the indicators of governance need repair. Groundwater, surface water and the environment
Air monitoring program should be determined in accordance with the technical requirements of governance repair.
5.4.2.2 Monitoring Project site treatment should be considered contaminants that might arise during the repair, it should be based on site specific rule
Repair processing technology required to determine, see HJ 25.4 relevant requirements.
5.5 Monitoring Work organization
5.5.1 Monitoring of division
Monitoring division generally include information collected to monitor the planning, monitoring sites layout, sample collection and
Site analysis, laboratory sample analysis, data processing, monitoring, reporting. Undertakers organization should be based on monitoring tasks
The division of responsibilities and a good unit internal cooperation between units.
5.5.2 Monitoring of preparation
Prepare monitoring generally include personnel division, finishing the collection of information, preparation of work plans, personal protective quasi
Equipment, site reconnaissance, sampling equipment and containers and analytical instruments preparation.
5.5.3 monitoring the implementation of
Monitoring the implementation of the work includes monitoring sites layout, sample collection, sample analysis, and subsequent data processing
And reporting. Under normal circumstances, the core of monitoring the implementation of the sampling distribution, and therefore should be taken to implement the distribution site
Kind of related working conditions. In the sample collection, preparation, transportation and analysis process, it should take the necessary technical and management
Measures to ensure the security monitoring personnel.
6 Monitoring Spot Location
6.1 Monitoring Spot Location Method
6.1.1 Layout method of soil monitoring sites
According to the site environmental survey location, site boundary and each phase of the conclusions identified requirements, determine the distribution
range. Area marked map or plans in the exact location, rendering the site boundary, and the boundary corner into the field
Row accurate positioning. Contaminated soil at the site environmental monitoring common monitoring points layout system comprising a random distribution method, system
Distribution method and area distribution method, see Figure 1.
Figure 1 monitoring sites schematic layout method
Regional 6.1.1.1 venue for similar soil characteristics, the same land-use functions, the system can be random distribution method
Layout of monitoring sites.
1) systematic random distribution method is to monitor the area is divided into several equal area of land from which random (random number obtained
You can take advantage of craps, lottery, check the random number table method) set aside a certain amount of land, a plot layout within each
Monitoring sites.
2) To determine the number of samples drawn according to the area, and space usage monitoring purposes.
6.1.1.2 The soil contaminated site characterization is not clear or serious damage to the site of the original condition, the system can be used to monitor distribution method
Spot Location. System distribution method is to monitor the area is divided into several plots of equal area, laid a monitor within each parcel
Point.
6.1.1.3 venue for different land use and pollution characteristics significantly different function venues, can be partitioned distribution method
Layout of monitoring sites.
Systematic random distribution method distribution system partition law distribution law
1) partition distribution method is to divide the site into different cells, and then determine the distribution based on the area of a cell or pollution characteristics
method.
2) division of land use within the site features are generally divided into the production area, office area, living area. In principle, the production area to
Block division should structure or production process as a unit, including the workshop, materials and product depot, wastewater treatment and waste
Slag storage site, the venue of material flow path, underground storage structures and pipelines. Office space including office buildings, squares,
Roads, green space, living area including canteens, dormitories and public buildings.
3) For land-use functions similar unit smaller production areas can also merge several cells into a monitoring site
Piece.
6.1.1.4 Control of soil monitoring sites in the layout method
1) Under normal circumstances, it should be set to control soil monitoring sites in the area outside the venue.
2) Control monitoring sites can be selected in four vertical axial field outside the region, in each direction equal pitches laid 3
Sampling points, respectively, sampling and analysis. As a result of topography, land use patterns, pollutant dispersion characteristics due to migration
When the prime cause soil characteristics significantly different sampling conditions or restrictions, monitoring points can be adjusted according to the actual situation.
3) Control monitoring sites should be selected within a certain period of time without external disturbance bare soil, surface soil should be collected
Sample, sample depth and sampling site as the surface soil at the same depth. If necessary, should also be collected deep soil samples.
6.1.2 Method of Laying groundwater monitoring sites
If the venue groundwater contamination should be suspected serious regional distribution, taking in the sites of groundwater runoff
Downstream distribution. Such as the need to understand the characteristics of contaminated sites by monitoring groundwater, within a certain distance of groundwater runoff
Catchment area downstream distribution.
6.1.3 Surface water monitoring points layout method
If there is surface water flowing or pooled venue, in the region suspected of serious pollution of surface water distribution, at the same time test
Consider the downstream distribution of surface water runoff.
6.1.4 Ambient Air Monitoring Spot Location Method
In the space center and the venue was downwind of major environmental sensitive points distribution. For sites that exist in the production workshop, the original
Pollution is concentrated area of material or waste storage site, should distribution in these regions; for organic pollution, odor pollution
Dyeing, mercury pollution and other types of sites, suspected to be in serious pollution area distribution.
6.1.5 residual waste within the site layout method of monitoring sites
In the suspected hazardous waste and residual waste area where the suspicious substances and soil characteristics significantly different local feed
Line distribution.
Layout 6.2 Environmental Site Investigation of monitoring sites
6.2.1 Layout of soil monitoring sites
6.2.1.1 Environmental Site Investigation Preliminary sampling of monitoring points layout
1) You can use functions and features based on original contamination site, select a number of possible serious pollution of land, soil contamination as
It was recognized monitoring plots. In principle, monitoring sites should be selected plots central or significant contamination of the site, such as the production car
Room sewage pipelines, waste dumps and the like.
2) For a more uniform contaminated sites (including types of pollutants and pollution) and topography severely damaged site (package
Including demolition destruction, destruction of historical change), the system can use the random distribution method according to the shape of the site, in each parcel
Center sampling.
3) the number of monitoring sites and sampling depth should be based on the area, the type of contamination and the use of different functional areas and so on survey
Conclusion OK.
4) For each monitoring plots, surface soil and deep vertical soil level classification should be considered contaminants move
OK Move situation, structures and pipelines damaged, the soil characteristics and other factors. Surface sampling depth should be deducted from the non-hardened soil
Layer thickness, it is recommended within 3m deep soil sampling interval on the principle 0.5m, 3m ~ 6m sampling interval of 1m, 6m to
Groundwater sampling interval is 2m, specific interval may be adjusted according to the actual situation.
5) In general, deep soil sampling depth should be determined, according to the site environment and the findings of the largest site conditions
Depth should be up to the depth of unspoiled so far.
6.2.1.2 Environmental Site Investigation detailed sampling layout of monitoring points
1) For a more uniform contaminated sites (including types of pollutants and pollution) and topography severely damaged site (package
Including demolition destruction, destruction of historical change), the system can be used to monitor land distribution law division, the center of each parcel
sampling.
2) If there is function or feature contaminated sites in different regions of significant differences, the original can be obtained according to the Environmental Investigation
Functions and characteristics of pollution information distribution method using partition divided the monitoring plots sampled in the center of each plot.
3) a single monitor land area can be determined based on the actual situation, in principle, should be more than 1600m2. For area than
Small venue, not less than five monitoring plots. Sampling depth should be a preliminary environmental survey to determine the maximum depth of sampling and monitoring
, Depth interval see 6.2.1.1 relevant requirements.
4) To collect samples of soil mix, according to the monitoring of each parcel of land area and the degree of pollution, will be divided into 1-9
Equal area of a grid, each grid center ......
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