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HJ 682-2019: Terms of risk control and remediation of soil contamination of land for construction
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Terms of risk control and remediation of soil contamination of land for construction
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Basic data | Standard ID | HJ 682-2019 (HJ682-2019) | | Description (Translated English) | Terms of 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 | 27,255 | | Date of Issue | 2019-12-05 | | Date of Implementation | 2019-12-05 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 682-2019: Terms of risk control and remediation of soil contamination of land for construction
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(Terminology of soil pollution risk control and remediation for construction land)
National Environmental Protection Standard of the People's Republic of China
Replaces HJ 682-2014
Terminology of soil pollution risk control and remediation for construction land
Terms of 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 ...
1 Scope ... 1
2 Terminology ... 1
Appendix A (Informative) English-Chinese Index ... 16
Appendix B (Informative) Chinese-English Index ... 20
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",
Investigation of pollution status and risk assessment of soil pollution, risk management and control, remediation, risk management and control effect evaluation, remediation effect evaluation,
Terminology in activities such as post-management, develop this standard.
This standard specifies terms and definitions related to soil pollution on construction land, including basic concepts, pollution and the environment.
Terminology for process, investigation and environmental monitoring, environmental risk assessment, remediation and management.
The terms are arranged according to the relevant concept system of the technical system to which Chinese nouns belong. When a concept has multiple names, identify one
The canonical name is used as the proper name, and the different names of the canonical name are respectively referred to as "short name", "full name" or "also known as"
use. When there is a customary abbreviation in the English name, list the abbreviation after the English name, and separate the English name with ",".
Whenever the first letter of an English word is uppercase or lowercase, it is always lowercase. Dividing in English must use the plural, usually using the singular. "()"
The Chinese characters are omissible. Appendix A (English-Chinese Index) and Appendix B (Chinese-English Index) are informative appendixes.
They are arranged in alphabetical order, and Chinese-English indexes are arranged in Chinese Pinyin order. Those with "*" in the index are synonymous or
An entry that appears in a paraphrase.
This standard was first published in.2014, and this is the first revision. The main contents of this revision.
1. The standard name was changed from "Terms for Contaminated Sites" to "Terms for Controlling and Restoring Soil Pollution Risk of Construction Land";
2. Added "construction land", "remediation plan", "soil environment background value", "construction land soil pollution risk control"
Value "and other terms and definitions;
3. Deleted terms and definitions for "site" and "potentially contaminated site";
4. Modified terms and definitions such as "topsoil", "subtopsoil", "exposure pathway", and "soil screening value".
From the date of implementation of this standard, the "Contaminated Site Terms" (HJ 682-2014) 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.
This standard was drafted. China Academy of Environmental Sciences, Ministry of Ecology and Environment
center.
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.
Terminology of soil pollution risk control and remediation for construction land
1 Scope
This standard specifies the terms and definitions related to the management and restoration of soil pollution risks on construction land, including basic concepts,
Terminology for pollution and environmental processes, investigation and environmental monitoring, risk assessment, risk management and remediation.
This standard applies to the use of terminology and definitions in environmental management of construction land.
This standard does not apply to the environmental management of radioactive plots.
2 Terminology
2.1 Basic concepts of parcels
2.1.1
Land for construction
Refers to the land on which buildings and structures are constructed, including urban and rural residential and public facilities land, industrial and mining land, transportation and water conservancy facilities
Land, land for tourism, land for military facilities, etc.
2.1.2
Risk control and remediation of soil contamination
Soil pollution risk management and remediation includes surveys of soil pollution conditions and assessment of soil pollution risks, risk management, remediation,
Activities such as risk management and control effect assessment, restoration effect assessment, and later management.
2.1.3
Soil soil
A loose layer of the earth's land surface consisting of minerals, organic matter, water, air, and biological organisms.
2.1.4
Groundwater
Water buried in the crust voids in various forms.
2.1.5
Surface water
Water flowing or standing on the surface of a land.
2.1.6
Outdoor air
Generally refers to the air outside the building, which corresponds to the indoor air.
2.1.7
Indoor air
Generally refers to the air inside a building or other relatively closed space, corresponding to outdoor air.
2.2 Terminology of land pollution and environmental processes
2.2.1
Contaminant of concern
Determine the need for soil pollution based on the characteristics of the land pollution, relevant standards and specifications, and the opinions of the stakeholders of the land
Pollutants in environmental surveys and soil pollution risk assessments.
2.2.2
Target pollutant
Where the quantity or concentration in the plot environment has reached actual or potential adverse effects on ecosystems and human health,
Concerns to be repaired.
2.2.3
On-site residual material
Various equipment, facilities and other materials left in the plot related to production and operation activities, mainly including
Raw materials, industrial waste residues, waste chemicals and their pollutants, solid and semi-solid residues in waste facilities, containers and pipelines
And liquid materials, and other solid materials that are significantly different from local soil characteristics.
2.2.4
Volatile organic compounds, VOCs
The boiling point is between 50 and 260 ℃, and the saturated vapor pressure exceeds the standard temperature and pressure (20 ℃ and 1 atmosphere).
133.32Pa organic compound.
2.2.5
Semivolatile organic compounds, SVOCs
The boiling point is between 260 and 400 ℃, and the saturated vapor pressure is between standard temperature and pressure (20 ℃ and 1 atmosphere).
1.33 × 10
Organic compounds between -6 and 1.33 × 102 Pa.
2.2.6
Non-aqueous phase liquid, NAPL
Liquid substances that are immiscible with water, usually a mixture of several different chemicals (solvents), also known as non-aqueous
Phase liquid.
2.2.7
Dense non-aqueous phase liquid, DNAPL
Non-aqueous liquids with a specific gravity greater than 1.0, such as trichloroethylene (TCE), trichloroethane (TCA), tetrachloroethylene (PCE), etc.
2.2.8
Light non-aqueous phase liquid, LNAPL
Non-aqueous liquids with a specific gravity less than 1.0, such as hydrocarbon oils such as gasoline and diesel.
2.2.9
Underground storage tank, UST
One or more fixed installations or storage systems, including underground pipes directly connected to them, their volume (including underground pipes)
90% or more of the volume of the channel is below the ground, and usually contains liquid phase that may pollute the soil and groundwater.
Harmful substances.
2.2.10
Above ground storage tank, AST
One or more fixed installations or storage systems, including above-ground pipes directly connected to them, their volume (including above-ground pipes)
90% or more of the volume of the channel is above the ground, usually containing liquid phase that may pollute the soil and groundwater.
Harmful substances.
2.2.11
Soil texture
Coarseness divided according to the composition of the relative content of particles with different particle sizes in the soil.
2.2.12
Soil pH
Negative logarithm of hydrogen ion concentration in soil solution.
2.2.13
Soil density
The mass of soil per unit volume is also called soil bulk density.
2.2.14
Soil porosity
Pore volume per unit of total soil volume.
2.2.15
Soil organic matter
Soil organic matter is a variety of products and combinations of all animal and plant residues formed in the soil and externally added at different decomposition stages.
The overall name of the product, and the carbon in the various animal and plant residues, microorganisms and their decomposition and synthetic organic substances entering the soil
It is called soil organic carbon. Soil organic carbon is part of soil organic matter.
2.2.16
Soil water content
The volume of water per unit volume of soil or the weight of water per unit weight of soil.
2.2.17
Cation exchange capacity, CEC
Per kilogram of soil or colloid, the centimoles of cations in the surrounding solution that are adsorbed or replaced.
2.2.18
Stratigraphic structure
Origin of rock or soil layer, age of formation, name, lithology, color, main mineral composition, structure and structure, stratum
Thickness and its variation, deposition sequence, etc.
2.2.19
Surface soil
The soil located in a certain depth range (usually 0 to 0.5 m) at the uppermost part of the plot, mainly refers to the direct contact with the human body in the plot
Soils associated with exposure (oral ingestion of soil, skin contact with soil, and inhalation of soil particles), including landfills,
It does not include the hardened surface.
2.2.20
Subsurface soil
The soil within a certain depth below the surface soil mainly refers to the soil below the surface soil that may be affected by pollutant migration and expansion.
Scattered soil.
2.2.21
Hydrogeological condition
The general term for groundwater burial, distribution, recharge, runoff, and drainage conditions, water quality and quantity, and its geological conditions.
2.2.22
Groundwater plume
A contaminated area formed when pollutants move and diffuse from the source to the surrounding area as the groundwater moves.
2.2.23
Buried depth of groundwater table
The vertical depth from the surface to the groundwater or confined water surface.
2.2.24
Hydraulic gradient
The ratio of head loss along the infiltration pathway to the length of the corresponding infiltration pathway.
2.2.25
Permeability coefficient
In saturated soil, the velocity of water passing through a unit cross section perpendicular to the direction of water flow under a unit pressure gradient.
2.2.26
Unconfined aquifer layer; phreatic stratum
The first stable water layer below the surface has a free water surface, and there is no continuous water barrier above, and it is not pressured or only partially pressured.
2.2.27
Aquifer
A rock formation that can penetrate and give a significant amount of water.
2.2.28
Aquitard
Rock formations that cannot penetrate or give water, or that the amount of water that passes through is insignificant.
2.2.29
Permeable layer
Permeable but not saturated rock formations.
2.2.30
Unsaturated zone
Also known as aeration zone (vadose zone; aeration zone), refers to the atmosphere between the ground surface and the groundwater surface, and contains
Strip of gas.
2.2.31
Saturated zone
Also known as a saturated zone, it refers to a zone where the voids of the soil layer or rock layer are completely filled with water below the groundwater surface.
2.2.32
Diving phreatic water
Groundwater with a free surface above the first stable aquifer below the surface.
2.2.33
Confined water; artesian water
The groundwater filled between the upper and lower aquifers is subject to pressures greater than atmospheric pressure.
2.3 Land survey and environmental monitoring terminology
2.3.1
Conceptual site model
Comprehensively describe pollution sources, pollutant migration pathways, human or ecological receptors in contact with pollution media by means of text, diagrams and tables.
Qualitative processes and contact methods.
2.3.2
Investigation on soil contamination
The process of determining whether a plot is contaminated and the extent and extent of contamination using a systematic survey method.
2.3.3
Site history investigation
Historical events on the plot, changes in the use of the plot, production and operation activities of the plot, and disposal and disposal of hazardous wastes
Relevant historical data is systematically collected, sorted, classified, and analyzed to clarify the history and causes of possible pollution in the plot.
2.3.4
Site-specific parameter
Parameters that can represent or approximately reflect the actual environmental conditions of the plot, and are used to describe the features of the plot such as soil, hydrogeology, and weather.
2.3.5
On-site rapid monitoring
Qualitative or quantitative analysis of potential pollutants on the plot using on-site rapid detection equipment.
2.3.6
Site environmental monitoring
Continuously or intermittently determine the concentration and spatial distribution of pollutants in the environment of the plot, observe and analyze their changes and their impact on the environment
Impact process.
2.3.7
Monitoring for investigation on soil contamination
In the process of soil pollution investigation and risk assessment, monitoring methods are used to identify soil, groundwater, surface water, and environment
Concerned pollutants in air and residual waste and physical and chemical characteristics of soil, and comprehensive analysis of land pollution characteristics to determine the pollution of the land
Species, degree of pollution, and extent of pollution.
2.3.8
Monitoring for remediation of land for construction
During the land remediation and repair process, relevant monitoring for the implementation effect of various remediation and repair technical measures, including
Monitoring of the quality of projects involving environmental protection and monitoring of secondary pollutant emissions during the process of remediation.
2.3.9
Monitoring for assessment of remediation effect
After the completion of the land remediation and restoration project, assess and evaluate whether the land has reached the established restoration goals and the project design
Related requirements.
2.3.10
Monitoring for retrospective assessment of land for construction
After the evaluation of the land remediation effect, within a specific time range, in order to evaluate the land,
Monitoring of the environmental impacts of water and ambient air, as well as the effects of long-term in-situ treatment and restoration measures on the plot
Validation monitoring.
2.3.11
Systematic sampling
Divide the plot into several plots of equal area, and place a sample at the center of each plot or at the intersection of the grid
Point for sampling.
2.3.12
Systematic random sampling
Divide the monitoring area into several cells of equal area, randomly select a certain number of cells from them, and arrange in each cell
A sampling point.
2.3.13
Judgemental sampling
Judging and selecting sampling sites based on the information about the pollution distribution of the plot and expert experience.
2.3.14
Stratified sampling
Dividing the plot into different (hierarchical) areas, and sampling according to the area or pollution characteristics of each area.
2.3.15
Reference sampling point
One or more sampling points in the same type of soil in a non-contaminated area outside the plot.
2.3.16
Quality assurance and quality control, QA/QC
Quality assurance refers to ensuring the representativeness, accuracy, precision, comparability, reliability,
Measures such as integrity. Quality control refers to the monitoring process to achieve the monitoring quality specified in the land monitoring plan.
The control method used is part of the quality assurance of environmental monitoring.
2.4 Land environmental risk assessment terminology
2.4.1
Carcinogenic risk
The probability that a population will be exposed daily to a unit dose of carcinogenic effect pollutants, causing carcinogenic disease or harm.
2.4.2
Non-carcinogenic risk
The ratio of the daily intake of pollutants to the reference dose is used to characterize human exposure to non-carcinogenic pollutants through a single pathway.
The level of harm is usually expressed in terms of the hazard quotient.
2.4.3
Health risk assessment of land for construction
Based on the survey of soil pollution, analyze the main exposure pathways of pollutants in the soil and groundwater of the plot to the population,
Assess the carcinogenic risk and harm level of pollutants to human health.
2.4.4
Ecological risk assessment for land for construction
Probability of pollutants in various environmental media of the plot to endanger animal, plant, microorganism and other ecosystem processes and functions
Or level and degree of assessment.
2.4.5
Hazard identification
According to the data obtained from the investigation of the soil pollution situation, combined with the land (planning) use of the land, determine the pollution concern of the land
Spatial distribution of pollutants and pollutants in the plot and possible sensitive receptors, such as children, adults, ecosystems, groundwater bodies, etc.
2.4.6
Exposure assessment
Based on the work of hazard identification, analyze the scenarios where the pollutants in the plot soil enter and harm sensitive receptors, and determine
Exposure pathways of soil pollutants to sensitive people in the plot, determine the migration model of pollutants in environmental media and
Exposure model to determine the correlations with the pollution status of the plot, soil properties, groundwater characteristics, sensitive populations, and the nature of the pollutants of interest.
Model parameter values to calculate the exposure of sensitive people to pollutants from soil and groundwater.
2.4.7
Receptor
Generally refers to the people or biological groups in the plot and its surrounding environment that may be affected by pollutants.
Affected functional water bodies (such as surface water, groundwater, etc.) and natural and cultural landscapes (areas), such as residential areas, commercial areas,
Public places such as schools, hospitals, drinking water protection areas, etc.).
2.4.8
Sensitive receptor
Of the potential biological groups affected by the pollutants in the plot, the groups that are most biologically sensitive to the pollutants (such as people or
Ecological receptors of some specific groups), certain age groups (such as the elderly) or people at certain development stages
(Such as children aged 0-6).
2.4.9
Critical receptor
People or ecological receptors whose risk of exposure to pollutants has been determined to exceed the acceptable risk level as determined by the risk assessment of the plot.
2.4.10
Exposure scenario
A hypothetical scenario description of land mass pollutants migrating through different ways and reaching the receptor under a specific land use mode.
That is, a series of facts, presumptions, and assumptions about how the land pollution exposure occurred.
2.4.11
Exposure pathway
Refers to the way in which pollutants in construction soil and groundwater migrate to reach and be exposed to the human body.
2.4.12
Exposure route
Refers to the way in which pollutants in the construction land soil migrate to reach the exposed individual and come into contact with the human body or enter the human body.
2.4.13
Exposure assessment model
Describe the human body's exposure to pollutants, conceptual models and mathematical simulation methods for predicting and estimating exposures.
2.4.14
Contaminant transport and fate model
Describe the environmental behaviors of pollutants' diffusion, migration, attenuation and transformation in soil and groundwater, and predict the spatiotemporal changes of pollutants
Mathematical models and simulation methods of laws, transient dynamics, and diffusion and influence range.
2.4.15
Exposure dose
The amount of pollutants that human or ecological recipients ingest through various routes, such as the mouth, respiratory system, and skin.
2.4.16
Exposure parameter; exposure factor
Parameters related to human behavior that reflect human exposure to pollutants on the plot, such as structural characteristics of sensitive people (years
Age, weight, etc.) and the time, frequency, cycle, etc. of the population exposed to pollutants through various environmental media.
2.4.17
Exposure duration
The length of time that a person stays in or is exposed to a contaminated area, which can also mean that the contaminated area remains in a hypothetical future scenario
The length of time the contamination has occurred.
2.4.18
Exposure frequency
The average number of days a particular population (recipient) is exposed to the polluted environment (medium) per year.
2.4.19
Toxicity assessment
Based on the work of hazard identification, analyze and focus on the harmful effects of pollutants on human health, including carcinogenic and non-causing effects
Cancer effect, determine the toxicity parameters related to the pollutant of interest, including reference dose, reference concentration, carcinogenic slope factor, single
Carcinogen, toxicity equivalent, blood lead content, etc.
2.4.20
Cancer slope factor
Human life-long excess carcinogenic risk when exposed to chemical carcinogens at a dose of 1 mg per kilogram of body weight daily.
2.4.21
Inhalation unit risk, IUR
Carcinogenic risk value of human life-long exposure to air containing pollutant concentrations of 1 mg/m3.
2.4.22
Reference dose, RfD
A reference dose is an estimate of the average daily dose. When humans are exposed to this level throughout their lifetime, adverse effects are expected to occur.
The risk is low or virtually undetectable. The reference dose for inhalation exposure is called the reference concentration,
RfC).
2.4.23
Risk screening values for soil contamination of land for
construction
Refers to the pollutants in the soil of construction land at or below the value under specific land use methods, which are harmful to human health.
The risk of human health can be ignored; if it exceeds this value, there may be risks to human health, and further detailed investigations and risks should be carried out
Assess to determine specific pollution scope and risk levels.
2.4.24
Risk characterization
Integrate the results of the exposure assessment and toxicity assessment, quantify the risk and characterize the space, and discuss the use of the assessment
Process of assumptions, parameters, and uncertainty of the model.
2.4.25
Acceptable risk level
Probability or degree of risk of adverse health effects recognized by society and acceptable to the public, including acceptable carcinogenic risk water
Harm quotients are acceptable for peaceful and non-carcinogenic effects.
2.4.26
Hazard quotient, HQ
The ratio of the daily intake of pollutants to the reference dose is used to characterize the human body's exposure to non-carcinogenic pollutants through a single pathway.
To hazardous levels.
2.4.27
Hazard index, HI
The sum of the hazard quotients of multiple exposure pathways or multiple pollutants of concern to characterize human exposure to
The level at which a pollutant is harmed by exposure to multiple pollutants.
2.4.28
Uncertainty analysis
The comprehensive analysis and evaluation of the uncertainty factors in the risk assessment process is called uncertainty analysis. Plot Risk Assessment Results
The uncertainty analysis of results is mainly caused by the input parameter error and the uncertainty of the model itself in the process of land risk assessment.
The qualitative or quantitative analysis of the uncertainty of the model simulation results is performed, including risk contribution rate analysis and parameter sensitivity analysis.
2.4.29
Risk intervention values for soil contamination of land for
construction
Refers to the pollutants in the soil of construction land exceeding the value under the specific land use mode, which usually exists for human health.
Unacceptable risks, risk management or repair measures should be adopted.
2.4.30
Environmental background values of soil
Refers to statistical values based on soil environmental background content. It is usually expressed as a certain quantile value of soil environmental background content. Which soil
Soil environmental background content refers to the elements in...
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