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Basic dataStandard ID: HJ 164-2020 (HJ164-2020)Description (Translated English): (Technical specifications for groundwater environmental monitoring) Sector / Industry: Environmental Protection Industry Standard Classification of Chinese Standard: Z10;Z50 Word Count Estimation: 41,462 Date of Issue: 2020-12-01 Date of Implementation: 2021-03-01 Older Standard (superseded by this standard): HJ/T 164-2004 Regulation (derived from): Ministry of Ecology and Environment Announcement No. 57 of 2020 Issuing agency(ies): Ministry of Ecology and Environment HJ 164-2020: (Technical specifications for groundwater environmental monitoring)---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.(Technical specifications for groundwater environmental monitoring) Technical specifications for groundwater environmental monitoring Technical specifications for environmental monitoring of groundwater 202 0-12 -01 released 202 1- 03 -01 Implementation National Environmental Protection Standards of the People's Republic of China Replace HJ/T 164-2004 release Ministry of Ecology and Environment i table of contents Foreword...ⅱ 1 Scope of application...1 2 Normative references...1 3 Terms and definitions...1 4 Layout of groundwater environment monitoring points...3 5 Construction and management of environmental monitoring wells...6 6 Monitoring and sampling...9 7 Sample preservation and transportation, handover and storage...13 8 Monitoring items and analysis methods...14 9 Monitoring data processing...14 10 Quality Assurance and Quality Control...16 11 Data compilation...18 Appendix A (Normative Appendix) Identification of Groundwater Environment Monitoring Wells...18 Appendix B (informative appendix) Monitoring well construction and scrap related record form...23 Appendix C (informative appendix) Reference method for groundwater sampling...29 Appendix D (informative appendix) Water sample storage, container washing and sampling volume technical indicators...33 Appendix E (informative appendix) Monitoring report format...35 Appendix F (informative appendix) Potential characteristic items in groundwater of pollution source...40 1 Technical specifications for groundwater environmental monitoring1 Scope of applicationThis standard specifies the layout of groundwater environmental monitoring points, the construction and management of environmental monitoring wells, sample collection and storage, and monitoring Requirements for items and analysis methods, monitoring data processing, quality assurance and quality control, and data compilation. This standard applies to the groundwater environment at the regional level, drinking water source protection areas and replenishment areas, pollution sources and surrounding areas Long-term monitoring. Other forms of groundwater environmental monitoring can be implemented by reference.2 Normative referencesThis standard quotes the following documents or their clauses. For undated reference documents, their valid versions are applicable to this standard. GB 16889 Pollution Control Standard for Domestic Waste Landfill Site GB 18598 Pollution Control Standard for Hazardous Waste Landfill GB 18599 Pollution control standard for general industrial solid waste storage and disposal sites GB/T 4883 Statistical processing and interpretation of data Judgment and processing of outliers in normal samples GB/T 8170 Numerical rounding rules and the expression and determination of limit values GB/T 14848 Groundwater Quality Standard HJ 25.2 Technical Guidelines for Soil Pollution Risk Control and Remediation Monitoring of Construction Land HJ 168 Technical Guidelines for the Preparation and Revision of Environmental Monitoring and Analysis Methods HJ 494 Technical Guide for Water Quality Sampling HJ 630 Technical Guidelines for Environmental Monitoring Quality Management HJ 1019 Technical Guidelines for Sampling of Volatile Organic Compounds in Soil and Groundwater DZ/T 0270 Construction Specification for Groundwater Monitoring Well DZ/T 0308 Design Code for Regional Groundwater Quality Monitoring Network SL 58 Hydrographic Survey Specification RB/T 214 General requirements for qualification accreditation of inspection and testing institutions3 Terms and definitionsThe following terms and definitions apply to this standard. 3.1 Groundwater Gravity water in saturated aquifers below the surface. 3.2 Phreatic water Groundwater with free water below the surface and above the first stable aquifer. 23.3 Confined water The pressure-bearing water filled between the upper and lower two opposite water-proof layers. 3.4 Hydrogeological condition The general term for conditions such as groundwater burial and distribution, water-bearing medium and water-bearing composition. 3.5 Hydrogeological unit Groundwater system with unified recharge boundary and recharge, runoff and drainage conditions. 3.6 Static water level Stable groundwater level in the well before pumping. 3.7 Groundwater environmental monitoring well The monitoring set up to accurately grasp the environmental quality of groundwater and the dynamic distribution of pollutants in groundwater Logging. 3.8 Groundwater recharge zone The area where the aquifer is exposed or is close to the surface and receives the infiltration and replenishment of atmospheric precipitation and surface water. 3.9 Groundwater runoff zone The runoff range of groundwater in the aquifer from the recharge area to the discharge area. 3.10 Pore water Gravitational water existing in the pores of rock and soil. 3.11 Fissure water Gravity water stored in cracks in rock mass. 3.12 Weathering fissure water Fissure water in the bedrock weathering zone. 3.13 Structure fissure water Groundwater that exists in cracks in rock structures. 3.14 Karst water Gravity water stored in soluble rock formations (cavities). 34 Layout of groundwater environment monitoring points 4.1 Principles for the layout of monitoring points 4.1.1 The monitoring points can generally reflect the groundwater environmental quality in the monitoring area. 4.1.2 The monitoring points should not be changed, and the continuity of groundwater monitoring data should be maintained as much as possible. 4.1.3 Considering factors such as the method of monitoring well formation, current technological development and monitoring technology level, and considering the actual sampling Feasibility, making the deployment of groundwater monitoring points feasible. 4.1.4 Regularly (e.g. every 5 years) conduct a survey and evaluation of the operation status of the groundwater quality monitoring network, according to the latest situation Optimize and adjust the groundwater quality monitoring network. 4.2 Requirements for the layout of monitoring points 4.2.1 For a larger monitoring area, the monitoring area shall be arranged along the main groundwater flow direction and the vertical groundwater flow direction supplemented. Measuring points. For the same hydrogeological unit, control monitoring points can be arranged according to groundwater recharge, runoff, and drainage conditions. When there are multiple aquifers in the groundwater, the monitoring well should be a layered monitoring well with a clear horizon. 4.2.2 Layout of monitoring points for groundwater drinking water sources, focusing on mining layers; when there are multiple aquifers, they should be Deploy monitoring points in the aquifer that is hydraulically connected to the target aquifer, and include surface water that is hydraulically connected to groundwater. Into monitoring. 4.2.3 Areas that have a greater impact on groundwater, such as chemical production enterprises and industrial clusters where groundwater pollution sources Monitoring points are arranged in the upstream, center, sides and downstream areas of the project; tailings ponds, hazardous waste disposal sites and landfill sites Monitoring points are arranged on the upstream, on both sides and downstream of the groundwater pollution source to assess the pollution status of groundwater. Pollution source When located in the groundwater supply area, the groundwater monitoring points can be encrypted according to the actual situation. 4.2.4 Groundwater monitoring around the pollution source is mainly shallow groundwater. For example, the shallow groundwater has been polluted and there is underground For water and drinking water sources, monitoring points for groundwater in the main mining layer need to be added. 4.2.5 The focus of the layout of monitoring points in karst areas is to track the entrances and exits of underground rivers and main aquifers. Deploy monitoring points on the shape and scale of the drift network, and appropriately deploy monitoring points in the replenishment and runoff areas between the main pipeline and branch pipelines. Or the potential pollution source distribution area should be appropriately encrypted for groundwater monitoring points. 4.2.6 The monitoring points in the fracture development area should be arranged on the interconnected fracture network as far as possible. 4.2.7 Existing civilian wells and production wells or springs can be selected as groundwater monitoring points, but they must meet the groundwater monitoring design Requirements. 4.3 Layout method of monitoring points 4.3.1 Layout method of regional monitoring points The layout of regional groundwater monitoring points shall be implemented in accordance with the relevant requirements of DZ/T 0308. 4.3.2 Layout method of monitoring points in groundwater drinking water source protection zone and replenishment zone 4.3.2.1 Pore water and weathered fissure water When the area of groundwater drinking water source protection area and replenishment area is less than 50 km2, there shall be no less than 7 water quality monitoring points; When 50 km2～100 km2, there shall be no less than 10 monitoring points; when the area is greater than 100 km2, each additional 25 km2 monitoring point One less increase; monitoring points are arranged in the drinking water source protection area and supply area according to the grid method. 44.3.2.2 Karst water There are no less than 3 water quality monitoring points on the main karst pipeline in the groundwater drinking water source protection zone and replenishment zone, and the first-level tributary pipeline is long. Two monitoring points should be set up if the temperature is greater than 2 km, and one monitoring point should be set up if the length of the primary tributary pipeline is less than 2 km. 4.3.2.3 Structural fissure water For structural fissure water, see the method of karst water distribution. 4.3.3 Layout method of groundwater monitoring points for pollution sources 4.3.3.1 Pore water and weathered fissure water 4.3.3.1.1 Industrial pollution sources a) Industrial clusters. 1) Set up one monitoring point, which is located at the upstream boundary of the groundwater flow in the industrial agglomeration area; 2) At least 5 pollution diffusion monitoring points are arranged, and no less than 3 are arranged in a fan shape perpendicular to the flow direction of groundwater. Set up one monitoring point on both sides of the agglomeration area along the direction of groundwater flow; 3) 3 to 5 monitoring points per 10 km2 are required for the internal monitoring points of industrial clusters. If the area is greater than 100 km2, each additional At least one monitoring point should be added to 15 km2; the monitoring points should be located in the lower reaches of the groundwater near the main pollution source. One monitoring point shall be arranged for the type of pollution source, and the total number of monitoring points shall be no less than 3 in the industrial agglomeration area. b) Industrial enterprises outside the industrial cluster. 1) Set up one monitoring point, which is located at the upstream boundary of the groundwater flow of industrial enterprises; 2) There should be no less than 3 monitoring points for pollution diffusion, and no less than 1 monitoring points on the downstream and on both sides of the groundwater 3) 1-2 internal monitoring points of industrial enterprises per 10 km2 are required. If the area is greater than 100 km2, each additional 15 At least one monitoring point shall be added to km2; monitoring points shall be arranged in areas with potential groundwater pollution hazards. 4.3.3.1.2 Mining area a) The mining area, sorting area, smelting area and tailings pond are located in the same hydrogeological unit. 1) Set up one monitoring point in contrast to the upstream boundary of the mine affected area; 2) No less than 3 pollution diffusion monitoring points, and no less than 1 groundwater monitoring points at the downstream and on both sides of the groundwater 3) A monitoring point is set up 30 m～50 m downstream of the tailing pond to evaluate the impact of the tailing pond on groundwater. b) The mining area, sorting area, smelting area and tailing pond are located in different hydrogeological units. 1) Set up 2 monitoring points, which are set at the upstream boundary of the affected area of the mine and the tailings pond from 30 m to 50 m Place 2) No less than 3 pollution diffusion monitoring points, and no less than 1 groundwater monitoring points at the downstream and on both sides of the groundwater 3) A monitoring point is set up 30 m～50 m downstream of the tailings pond to evaluate the impact of the tailings pond on groundwater; 4) One monitoring point is set up in the mining area and the sorting area to determine whether it has an impact on groundwater. Since the launching water has been polluted, monitoring points should be arranged in densely populated areas to determine the scope of groundwater pollution. 54.3.3.1.3 Gas station a) When the flow direction of the groundwater is clear, at least one pollution diffusion monitoring point shall be set at a distance of 5 from the buried oil tank downstream of the groundwater m～30 m; b) When the flow direction of groundwater is not clear, set up 3 monitoring points, distributed in a triangle, at a distance of 5 m to the buried oil tank At 30 m. 4.3.3.1.4 Agricultural pollution sources a) Reclaimed water agricultural area. 1) Set up 1 control monitoring point, and set it at the upstream boundary of the groundwater flow in the reclaimed water agricultural area; 2) There are no less than 6 pollution diffusion monitoring points, one on each side of the reclaimed water and agricultural area. No less than 4 areas and downstream areas; 3) When the area is greater than 100 km2, there are no less than 20 monitoring points, and each increase in the area starting from 100 km2 15 km2, the number of monitoring points increased by one. b) Livestock and poultry farms and breeding communities. 1) One control monitoring point is set up at the upstream boundary of the groundwater flow of the breeding farm and breeding plot; 2) No less than 3 pollution diffusion monitoring points, and no less than 1 groundwater monitoring points at the downstream and on both sides of the groundwater 3) If the area of the breeding farm and breeding plot is larger than 1 km2, the number of monitoring points in the farm area will increase by 2. 4.3.3.1.5 Golf course a) Set up one monitoring point, which is set at the upstream boundary of the golf course where the water flows; b) There are no less than 3 pollution diffusion monitoring points, and no less than 1 groundwater monitoring points at the downstream and on both sides of the groundwater; c) The internal monitoring point of the golf course is not less than one. 4.3.3.2 Karst water a) In principle, there should be no less than 3 monitoring points on the main pipeline. According to the distribution and flow direction of the underground river, Set up 3 monitoring points in the middle and downstream, respectively as control monitoring points, pollution monitoring points and pollution diffusion monitoring points; b) Well-developed karst and complex distribution of underground rivers, add 2 to 4 monitoring points according to site conditions, first-level tributaries The pipeline length is greater than 2 km with 2 points, and the primary tributary pipeline length is less than 2 km with 1 point. 4.3.3.3 Structural fissure water For structural fissure water, see the method of karst water distribution. 4.3.3.4 The layout of the launching monitoring point of the hazardous waste disposal site shall be implemented in accordance with the relevant requirements of GB 18598. 4.3.3.5 The layout of the launching monitoring point of the domestic waste landfill site shall be implemented in accordance with the relevant requirements of GB 16889. 4.3.3.6 The layout of monitoring points for general industrial solid waste storage and disposal sites shall refer to the relevant requirements of GB 18599. Row. 4.3.3.7 The layout of groundwater monitoring points for other types of pollution sources can refer to the above methods. 65 Construction and management of environmental monitoring wells 5.1 Construction of environmental monitoring wells 5.1.1 Requirements for the construction of environmental monitoring wells 5.1.1.1 The construction of environmental monitoring wells shall follow the principle of one well one design, one well one coding, and all monitoring wells are uniformly coded. On the basis of fully collecting and mastering the relevant data and on-site surveys in the area where the monitoring wells are planned to be built, scientific design should be made according to local conditions. 5.1.1.2 The construction depth of monitoring wells shall meet the requirements of monitoring objectives. The monitoring target layer and other aquifers must be water-stopped, The water filter pipe of the monitoring well shall not cross the layer, and the monitoring well shall not penetrate the bottom plate of the aquifer under the target aquifer. 5.1.1.3 The structure types of monitoring wells include single-tube single-layer monitoring wells, single-tube multi-layer monitoring wells, nested monitoring wells, and cluster monitoring wells. Logging, continuous multi-channel monitoring wells. 5.1.1.4 Monitoring well construction includes monitoring well design, construction, well completion, pumping test, etc., refer to DZ/T 0270 Customs require execution. a) The construction materials used in the monitoring well should not change the chemical composition of the groundwater, that is, it should not interfere with the ground Analysis of compounds in the sewage; b) Safety measures should be taken during construction to achieve clean production and civilized construction. Avoid polluting groundwater during drilling; c) The water intake location of the monitoring well is generally in the middle of the target aquifer, but when the water contains heavy non-aqueous phase liquid, the water is taken The location should be at the bottom of the aquifer and the top of the impermeable layer; when the water contains light non-aqueous phase liquid, the water intake location should be At the top of the aquifer; d) Monitoring well filter pipe requirements, 1 m water filter pipe is required to be located above the water surface during high water periods; 1 m water filter pipe is required during dry periods The water filter pipe is located below the ground water surface; e) The inner diameter of the well pipe is required to be no less than 50 mm, subject to the diameter that can meet the requirements for well flushing and water extraction; f) Do not use any adhesive or paint when connecting the joints of the well pipe. It is recommended to use the threaded connection of the well pipe; g) After the construction of the monitoring well is completed, the well must be washed to ensure that the water from the monitoring well is clean and clean. Common methods include overweight Pumping, recoil, drawing and air washing, etc.; h) After the well is cleaned, a constant flow pumping test with at least one falling stroke is required, and the pumping stability time reaches more than 24 hours. Water samples can be collected only......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of HJ 164-2020_English be delivered?Answer: Upon your order, we will start to translate HJ 164-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of HJ 164-2020_English with my colleagues?Answer: Yes. 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