HJ 164-2020 in English

VALID

Technical specifications for environmental monitoring of groundwater

Issued on:2020-12-01
Implemented on:2021-03-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $740.00
$718.00

Standard No:	HJ 164-2020
Document status:	VALID
Title in English:	Technical specifications for environmental monitoring of groundwater
Title in Chinese:	地下水环境监测技术规范
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2020-12-01
Implemented on:	2021-03-01
Superseding:	HJ/T 164-2004 Technical specifications for environmental monitoring of groundwater
Professional Classification:	HJ-Environment
Related Keywords:	groundwater monitoring environmental monitoring monitoring requirements monitoring points monitoring wells vocs
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本标准规定了地下水环境监测点布设、环境监测井建设与管理、样品采集与保存、监测项目和分析方法、监测数据处理、质量保证和质量控制以及资料整编等方面的要求。
本标准适用于区域层面、饮用水源保护区和补给区、污染源及周边等区域的地下水环境的长期监测。其他形式的地下水环境监测可参照执行。

Introduction

Standard Revision Background and Technical Evolution

HJ 164-2020 replaces the 2004 version of the standard. The main revisions include: adding the definition of the term environmental monitoring well, strengthening the monitoring requirements around drinking water source areas and pollution sources, and canceling the appendix on information system construction. This revision reflects the technical transformation of my country's groundwater monitoring from basic data collection to refined management.

Comparison of core technical requirements

Dimension	HJ/T 164-2004	HJ 164-2020
Monitoring point density	≥1 per 50km²	Add 1 per 25km² of drinking water source area
Well structure requirements	No clear stratified monitoring	Must use stratified monitoring wells
VOCs sampling	Not separately specified	Implement HJ 1019 special requirements

Key indicators for monitoring well construction

Material specifications:PVC is prohibited for well pipes, stainless steel or galvanized steel is recommended, and the opening rate of the filter pipe is ≥15%

Water-stopping requirements:The target aquifer and other layers must be completely water-stopped, and the water-stopping material is bentonite or cement slurry

Identification system:New unified coding and QR code nameplates, including 12 basic information such as well depth and filter pipe interval

Recommendations for the implementation of pollution source monitoring

Industrial agglomeration areas need to set up fan-shaped distribution points (3 downstream + 1 on each side), and gas stations use the triangular distribution method. In karst areas, ≥3 monitoring points need to be set up along the main pipeline of the underground river, and 1 additional point is set up every 2km of the tributary pipeline.

Feature project selection: The petrochemical industry needs to monitor MTBE and petroleum hydrocarbons (C₆-C₄₀), and mining areas need to increase heavy metal indicators such as beryllium and thallium.

More samples: GB 50021-2001(2009) DL/T 368-2010 NB/T 47013.2-2015

Sample only — not a preview of HJ 164-2020

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