Environmental Safety & Risk Assessment
Comprehensive environmental safety performance assessment for landfills, hazardous waste facilities and mine tailings.
Engineering Background
This assessment is performed per GB 18598-2019 "Standard for Pollution Control on the Hazardous Waste Landfill," Article 7.10. Landfills must periodically evaluate environmental safety performance based on leachate head level, generation rate, composition and concentration, leak-detection layer drainage, and groundwater monitoring results; remedial adjustments to operational plans and emergency measures are determined accordingly. Frequency: at least every two years during operation; at least every three years from closure to the end of design life; at least annually after the design life.
- Engineering and hydrogeological conditions analysis
- Design and construction quality evaluation
- Operating-procedure and management review
- Containment-liner integrity inspection (incl. CCTV and tracer testing)
- Heap and dam-body stability monitoring
- Leachate management and treatment reliability assessment
- Groundwater, surface water, soil and atmospheric impact evaluation
Principle & Method
The assessment reviews historical construction records, operational logs and routine monitoring data, complemented by integrity inspection and heap-stability monitoring. Key aspects include: engineering and hydrogeological conditions; design and construction quality; operating procedures and actual management; containment-liner integrity; heap and dam-body stability; leachate management and treatment; and environmental monitoring and impacts. The output is a conclusive environmental safety performance assessment with concrete recommendations for operational management and pollution control.
Typical Scenarios & Diagrams
Assessment Frequency
GB 18598-2019 §7.10 requires landfills to assess environmental safety performance at intervals, on the basis of leachate level, generation rate, composition and concentration, leakage-detection-layer flow and groundwater monitoring results, and to decide from that assessment whether the operating plan needs revision and whether emergency measures are required.
| Stage | Interval |
|---|---|
| During landfill operation | At least once every two years |
| Closure to end of design life | At least once every three years |
| After design life | At least once a year |
Scope of Assessment
Aligned to GB 18598-2019 · GB 16889-2024 · CJJ/T 214-2016
- 01Geological and hydrogeological review
- 02Integrity and effectiveness of the barrier system
- 03Stability analysis of the waste mass and embankment
- 04Leachate generation, drainage and treatment systems
- 05Surrounding soil and groundwater monitoring data
Need technical support?
Contact the SENEVEN engineering team for a tailored detection or monitoring scope, scaled to your project type, footprint and field conditions.