GB/T 39792.2-2020 in English
VALIDTechnical guideline for identification and assessment of environmental damage—Environmental elements—Part 2: Surface water and sediment
- Issued on:2020-12-29
- Implemented on:2021-01-01
- File Format:PDF
- Delivery:Via email within 5 business days
$437.00
《GB/T 39792.2-2020生态环境损害鉴定评估技术指南 环境要素 第2部分：地表水和沉积物》由467（生态环境部）归口，主管部门为生态环境部。
Introduction
Analysis of the core content of the standard
GB/T39792.2-2020 is my country's first professional technical standard for the identification and assessment of ecological environmental damage to surface water and sediments. It has established a technical framework with 8 working procedures:
- Work plan formulation
- Damage investigation and confirmation
- Causal relationship analysis
- Physical quantification
- Restoration plan formulation
- Value quantification
- Report preparation
- Restoration effect evaluation
Key technical points
1. Damage investigation indicator system
| Event type | Core survey indicators | Key monitoring elements |
|---|---|---|
| Sudden pollution | Pollutant diffusion range, effectiveness of emergency measures | Characteristic pollutants, dissolved oxygen, acute biological toxicity |
| Cumulative pollution | Degradation degree of ecological service functions | Biological enrichment coefficient, community diversity |
| Ecological damage | Habitat loss area | Number of key species, hydrological and geomorphological parameters |
2. Causal relationship determination logic
The standard proposes a five-step determination method: clear pollution source → existence of damage → reasonable time series → pollutants from the same source → complete exposure path. Key technologies include:
- Isotope traceability technology (heavy metals such as lead and mercury)
- Hydrodynamic models (MIKE, EFDC, etc.)
- AQUATOX ecological effect model
Specifications for the formulation of recovery plans
Technology selection matrix
| Damage type | Basic restoration technology | Compensatory restoration plan |
|---|---|---|
| Organic pollution | Ecological floating beds, artificial wetlands | Construction of downstream sewage treatment facilities |
| Heavy metal pollution | Chemical passivation + sediment dredging | Construction of alternative habitats |
| Ecological damage | River ecological construction | Enrichment and release (SC/T9401) |
Note: If the recovery period exceeds 1 year, the damage during the period needs to be calculated, and the equivalence analysis method should be used to quantify the scale of compensation
Implementation suggestions
Operational precautions
- Baseline confirmation shall give priority to three consecutive years of historical data, and KS normality test shall be carried out
- Sampling for emergencies shall be systematically investigated and deployed within 24 hours
- When quantifying the value, the water resource tax shall be calculated at 50% for those exceeding the baseline but not exceeding the standard
Responses to common problems
Case: In a cadmium pollution incident, the following were used:
- Three-dimensional fluorescence spectroscopy for pollution source fingerprint identification
- HYDRUS model for simulating migration paths
- Restoration cost method for calculating sediment dredging + ecological revetment costs
Standard Evolution Analysis
Compared with the former Ministry of Environmental Protection's 环办政法〔2016〕67号 document, this standard has the following major breakthroughs:
- New chapter on sediment special assessment
- Detailed quantification methods for 11 types of water ecological service functions
- Dynamic calculation model for damage during the introduction period
- Clear requirement for a 12-month minimum tracking period for restoration effect evaluation
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 22552-2023 in English
Leisure accommodation vehicles—Terminology
2023-05-23 -
GB/T 50558-2019 in English
Standard for design of environmental protectionfacilitiesof cement plant
2019-02-13 -
GB 34655-2017 in English
Specifications for extinguishing equipment arrangement in bus
2017-10-14 -
GB 15562.2-1995/XG1-2023 in English
Graphical signs for environmental protectior solid waste storage (disposal) site, includes Amendment 1
2023-01-20 -
GB/T 5193-2020 in English
Method of ultrasonic inspection for wrought titanium and titanium alloy products
2020-03-06 -
GB/T 22359.1-2022 in English
Earth-moving and building construction machinery—Electromagnetic compatibility（EMC） of machines with internal electrical power supply—Part 1:General EMC requirements under typical electromagnetic environmental conditions
2022-10-12 -
GB/T 3626-1983 in English
Technical requirements of tantalum pentoxide
- -
GB/T 51116-2016 in English
Technical Standard for Safety Risk Assessment of Medical Engineering
2016-04-15 -
GB/T 24734.8-2009 in English
Technical product documentation—Digital product definition data practices—Part 8:Requirements for model values and dimensions
2009-11-30 -
GB/T 39016-2020 in English
Custom furniture—General design specification
2020-07-21
