HJ 25.4-2019 English PDFUS$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. HJ 25.4-2019: Technical guidelines for soil remediation of land for construction Status: Valid HJ 25.4: Historical versions
Basic dataStandard ID: HJ 25.4-2019 (HJ25.4-2019)Description (Translated English): Technical guidelines for soil remediation of land for construction Sector / Industry: Environmental Protection Industry Standard Classification of Chinese Standard: Z18 Classification of International Standard: 13.080 Word Count Estimation: 12,140 Date of Issue: 2019-12-05 Date of Implementation: 2019-12-05 Issuing agency(ies): Ministry of Ecology and Environment HJ 25.4-2019: Technical guidelines for soil remediation of land for construction---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Foreword In accordance with 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", Health, protect the ecological environment, strengthen the supervision and management of construction land environment, standardize the preparation of soil remediation plans for construction land, formulate This standard. This standard specifies the basic principles, procedures, contents and technical requirements for the preparation of soil remediation plans for construction land. Appendix A of this standard is an informative appendix. 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 "Guidelines for Soil Remediation Technology for Contaminated Sites" to "Guidelines for Soil Remediation Technology for Construction Land"; 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 other standards-related content of normative references; 4. Deleted terms and definitions for "site" and "potentially contaminated site"; 5. Unifiedly express the "repair technology plan" and "repair plan" as "repair plan", and clarify the repair plan and future Continue the relationship between engineering design and construction; 6. Modified the contents of “Propose repair target value” and “Select repair mode”; 7. Modify "Repair Engineering Acceptance" to "Repair Effect Evaluation". 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 the Control and Remediation of Soil Pollution Risks on Construction Land" (HJ 25.2); "Technical Guidelines for Risk Assessment of Soil Pollution on Construction Land" (HJ 25.3); "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 Soil Remediation of Contaminated Sites (HJ 25.4-2014) 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 are. Shanghai Academy of Environmental Sciences, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Ecology Institute of Environmental Standards, Ministry of Environment, Institute of Environmental Protection of Light Industry, Shenyang Institute 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. Guidelines for soil remediation technology for construction land 1 ScopeThis standard specifies the basic principles, procedures, contents and technical requirements for the preparation of soil remediation plans for construction land. This standard applies to the formulation of soil remediation plans for construction land. Technical guidelines for groundwater remediation are published separately. This standard does not apply to soil remediation of radioactive and pathogenic biological pollution.2 Normative referencesThe content of this standard refers to the clauses in the following documents. For undated references, the valid version applies to This standard. GB 36600 Soil Environmental Quality Control Standards for Soil Pollution Risk of Construction Land HJ 25.1 Technical Guidelines for Investigation of Soil Pollution on Construction Land HJ 25.2 Technical Guidelines for Soil Pollution Risk Management and Remediation Monitoring on Construction Land HJ 25.3 Technical Guidelines for Risk Assessment of Soil Pollution on Construction Land HJ 25.5 Technical Guidelines for Risk Management and Contamination Evaluation of Contaminated Land3 terms and definitionsThe following terms and definitions apply to this standard. 3.1 Soil remediation Use physical, chemical or biological methods to fix, transfer, absorb, degrade or transform The process of reducing its content to acceptable levels or converting toxic and harmful pollutants into harmless substances. 3.2 Target for remediation Target pollutants determined by soil pollution surveys and risk assessments do not directly or directly affect human health and ecological receptors. Potential hazards, or pollution remediation endpoints without environmental risks. 3.3 Feasibility study for remediation Evaluate and demonstrate alternative repair technologies in terms of technology, conditions, cost-effectiveness, etc. Feasible and economically viable repair plan. 3.4 Remediation strategy The general idea of land restoration, including in-situ restoration, off-site restoration, off-site disposal, natural restoration, pollution resistance Isolation, resident protection, and institutional control, also known as remediation strategies.4 Basic principles and working procedures4.1 Basic principles 4.1.1 Scientific principles Adopt a scientific method to comprehensively consider the land restoration target, the treatment effect of soil restoration technology, restoration time, and restoration Costs, environmental impacts of remediation projects, etc., formulate remediation plans. 4.1.2 Feasibility principle The formulated soil remediation plan should be reasonable and feasible. Based on the preliminary work, the pollution nature of the land, Extent, scope, and harm to human health or ecological environment, reasonably choose soil remediation technology and adapt to local conditions Establish a repair plan, make the repair target reachable, and the repair project is feasible. 4.1.3 Security Principles Formulate the soil remediation plan to ensure the safety of the land remediation project and prevent the health of construction workers and surrounding people. As well as ecological environment harm and secondary pollution. 4.2 Working Procedure The working procedure for plotting the soil remediation plan is shown in Figure 1. Start Put forward the restoration target and confirm the restoration requirements. Select repair mode Analysis and comparison of practical repair techniques Feasibility assessment of remediation technology Identify repair techniques Develop a technical route to estimate the amount of restoration work Develop an environmental management plan End select repair mode filter repair technology Make repair Program Determine process parameters Comparison of repair options Initial formulation of repair plan Preparation of a repair plan Figure 1 Procedure for compiling soil remediation plan The preparation of plot soil remediation plan is divided into the following three stages. 4.2.1 Select repair mode Based on the analysis of the previous survey and risk assessment data of contaminated soil pollution, Pollutants, restoration targets, scope and duration of restoration, choose to determine the general idea of land restoration. 4.2.2 Screening repair technology According to the specific situation of the plot, according to the determined remediation mode, select practical soil remediation technologies and carry out the necessary practical Laboratory test and field test, or analysis of soil remediation technology application cases, from the applicable conditions, Assessment of recovery effects, costs and environmental safety. 4.2.3 Develop a repair plan According to the determined remediation technology, formulate the soil remediation technology route, determine the process parameters of the soil remediation technology, and estimate the For the amount of soil remediation, a preliminary remediation plan is proposed. From the main technical indicators, the cost of repair works and the prevention of secondary pollution The feasibility comparison and selection of the measures and other aspects were carried out to determine economic, practical and feasible remediation plans.5 Select repair mode5.1 Confirming site conditions 5.1.1 Verification of relevant information of the plot Review the previous survey report of soil pollution status completed in accordance with HJ 25.1 and HJ 25.2 and the site completed in accordance with HJ 25.3 Block risk assessment report and other relevant information, verify the completeness and validity of the relevant data of the block, and focus on verifying the previous block information And whether the data can reflect the current actual situation of the plot. 5.1.2 Site inspection site conditions Investigate the current status of the site, paying special attention to major changes that occurred during the previous survey and risk assessment of soil pollution And changes in sensitive environmental protection targets. On-site inspection of the construction conditions of the land restoration project, paying special attention to the site The power, water, construction roads, and security conditions of the block provide basic information for the layout of the construction area of the repair plan. 5.1.3 Supplement relevant technical data By checking the existing data of the plot and inspecting the status of the plot, if it is found that it cannot meet the basic information requirements for the preparation of the restoration plan If necessary, relevant information should be supplemented appropriately. When necessary, supplementary monitoring should be carried out appropriately, and even supplementary soil pollution surveys should be conducted And risk assessment, relevant technical requirements refer to HJ 25.1, HJ 25.2 and HJ 25.3. 5.2 Propose repair goals By analyzing the soil pollution status survey and risk assessment data obtained in the previous period, and combining necessary supplementary surveys, Confirm the target pollutants, target value and scope of soil remediation. 5.2.1 Confirmation of target pollutants Identify the target soil remediation pollutants from the previous soil pollution survey and risk assessment, and analyze their characteristics with the plot Relevance of pollutants and compliance with relevant standards. 5.2.2 Propose repair target value Analyze and compare the soil risk control value calculated according to HJ 25.3, the screening value and control value stipulated in GB 36600, and the plot The background content of the target pollutants in the soil in the area and the limits specified in relevant national and local standards, combined with the target pollutants The morphology of dyestuffs, the law of migration and transformation, etc., reasonably put forward the target value of remediation of target soil pollutants. 5.2.3 Confirm the scope of repair Confirm whether the scope of soil remediation proposed in the previous soil pollution survey and risk assessment is clear, including the surrounding boundaries and Depth distribution of contaminated soil layer, special attention should be paid to abnormal distribution of contaminated soil layer, such as discontinuity from top to bottom. in accordance with Remediation target value of soil target pollutants. Analyze and evaluate the amount of soil to be remediation. 5.3 Confirmation of repair requirements Communicate with the stakeholders of the plot to confirm the requirements for soil remediation, such as the time of remediation and expected funding. 5.4 Select repair mode According to the characteristic conditions of the plot, the target of restoration and the requirements for restoration, the overall idea for the restoration of the plot is selected and determined. Permanent repair Recycling takes precedence over disposal, which significantly reduces the amount of pollutants, toxicity, and mobility. Encourage the use of green, sustainable and Source repair. In principle, the treatment and restoration project should be carried out at the original site. If it is necessary to transfer the contaminated soil, the transporter Pattern, route and quantity of contaminated soil, whereabouts and final disposal measures.6 Screening and repair techniques6.1 Analysis and comparison of practical repair techniques Combining plot pollution characteristics, soil characteristics, and selected remediation models, from technical maturity, suitable target pollutants, and Analysis of soil types, remediation effects, time and cost, compared with the advantages and disadvantages of existing soil remediation technologies, focusing on analysis The practicability of each repair technology engineering application. A list can be used to describe the principles of repair techniques, applicable conditions, and main technical indicators Comparative analysis of the advantages and disadvantages of the target, economic indicators and technology applications, etc., can also use the method of weight scoring. by Comparative analysis, put forward one or more alternative repair technologies for further feasibility assessment. 6.2 Feasibility assessment of remediation technology 6.2.1 Lab test The feasibility assessment of soil remediation technology can be carried out in a laboratory. Laboratory quiz to collect contaminated soil in plots For testing, a laboratory test plan should be developed for the key links and parameters of the test repair technology. 6.2.2 On-site pilot If the applicability of soil remediation technology is uncertain, field trials should be carried out on the plot to verify the actual effectiveness of the test remediation technology. Results, while taking into account project management and secondary pollution prevention. The pilot test should try to take into account different areas and different pollution in the plot. Dye concentration and different soil types to obtain the parameters required for soil remediation engineering design. 6.2.3 Application Case Analysis The feasibility assessment of soil remediation technology can also be carried out by using application case analysis of the same or similar land remediation technology. On-site inspection and evaluation of the actual project of the application case when necessary. 6.3 Identify repair techniques On the basis of analyzing and comparing the advantages and disadvantages of soil remediation technologies and conducting technical feasibility tests, Summarize the various alternative repair technologies in terms of conditions, effectiveness, cost, time, and environmental safety In comparison, select and determine the repair technology for the next stage of formulating a repair plan.7 Develop a repair plan7.1 Develop a technical route for soil remediation According to the determined land remediation model and soil remediation technology, formulate the soil remediation technology route, and a single remediation can be adopted The technology is formulated, and multiple repair technologies can also be used for optimal combination and integration. The repair technology route should reflect the overall land repair Ideas and repair methods, repair process and specific steps, should also include contaminated water bodies, air Decontamination of solid waste and solid waste. 7.2 Determine process parameters of soil remediation technology The process parameters of soil remediation technology should be obtained through laboratory test and/or field pilot test. Process parameters include, but are not limited to Dosage or ratio of medicament, equipment influence radius, equipment processing capacity, processing time required, processing conditions, energy consumption, equipment Footprint or area of work area, etc. 7.3 Estimating the quantity of soil remediation According to the technical route, according to the determined single repair technology or a combination of repair technology schemes, combining process flow and parameters Number to estimate the amount of repair work for each repair plan. Depending on the restoration plan, the amount of restoration work may be surveyed and evaluated The amount of work required for soil treatment and disposal determined at the stage may also be the amount of work involved in the plan. The amount of decontamination treatment and disposal of polluted water, gas and solid waste during the process. 7.4 Comparison and selection of repair schemes From the main technical indicators, project cost estimates and secondary Comparison and selection of pollution prevention measures, etc., finally determine the best remediation plan. 7.4.1 Main technical indicators Combining plot soil characteristics with restoration goals, from compliance with laws and regulations, long- and short-term effects, restoration time, cost and In terms of the environmental impact of the restoration project, the rationality of the main technical indicators of different restoration schemes is compared. 7.4.2 Cost of restoration works Based on the amount of land restoration works, estimate and compare the restoration costs incurred by different restoration schemes, including direct costs and time Pick up costs. The direct costs mainly include the cost of the main equipment, materials, and engineering implementation of the restoration project, and the indirect costs include restoration Expenses for project monitoring, project supervision, quality control, health and safety protection, and secondary pollution prevention measures. 7.4.3 Preventive measures against secondary pollution The implementation of the land remediation project should first analyze the environmental impact of the project implementation, and should be based on the soil remediation process and Environmental impacts such as waste water, waste gas, solid waste, noise and dust generated during construction equipment cleaning, etc. Collection, treatment and disposal of technical solutions, and put forward secondary pollution prevention measures. Comprehensive comparison of secondary pollution prevention measures for different remediation schemes Effectiveness and enforceability. 7.5 Develop an environmental management plan The environmental management plan of the soil remediation project includes the environmental monitoring plan and environmental emergency safety plan for the remediation project. 7.5.1 Environmental Monitoring Plan for Remediation Engineering The environmental monitoring plan of the rehabilitation project includes the environmental supervision of the rehabilitation project, the monitoring of the secondary pollution and the assessment of the environment in the restoration effect. monitor. According to the determined best repair plan, combined with the pollution characteristics of the plot and the environmental conditions of the plot, targeted Establish an environmental monitoring plan for the restoration project. Relevant technical requirements are implemented in accordance with HJ 25.2 and HJ 25.5. 7.5.2 Environmental emergency safety plan In order to ensure the safety of the construction workers and surrounding residents during the land remediation process, a comprehensive land remediation project environment shou......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of HJ 25.4-2019_English be delivered?Answer: Upon your order, we will start to translate HJ 25.4-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of HJ 25.4-2019_English with my colleagues?Answer: Yes. The purchased PDF of HJ 25.4-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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