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<p>This study conducted a perception survey of waste landfill experts to systematically assess the likelihood of water contamination from landfill facilities, employing a Likert-scale framework across siting, design, construction, operation, and environmental impact assessment (EIA). In the siting phase, downstream catchment locations showed the highest ‘Very High’ response rate (50%); however, based on mean scores (4.36 ± 0.63) and combined ‘Very High + High’ (VH + H) response rates (93%), soft ground conditions and bottom-layer soil characteristics emerged as the most prominent risk factors. In the design phase, the leachate barrier system (4.50 ± 0.65; VH + H 93%) was the key factor, while in the construction phase, geomembrane damage caused by equipment (4.14 ± 0.86; VH + H 71%) was the predominant contributor. In the operation phase, facility deterioration (3.70 ± 0.97; VH + H 68%) and natural disaster risks (3.68 ± 1.03; VH + H 60%) were most significant. Nitrogenous compounds (66.7%) were identified as the most challenging components for meeting effluent standards. From an EIA perspective, post-monitoring plans, leakage prevention measures, treatment plans, and geotechnical investigation were confirmed as essential. This study provides a comprehensive diagnosis of water contamination likelihood across landfill lifecycle phases and can serve as foundational data for planning and policy decisions.</p>

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Expert perception survey on the probability of water pollution from waste landfills

  • 期刊论文

  • 发表日期：

    2026年5月23日

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  • Junyeong An,
  • Jinhee Lee,
  • Tae-Ho Park,
  • Min-Kyu Ji

摘要

This study conducted a perception survey of waste landfill experts to systematically assess the likelihood of water contamination from landfill facilities, employing a Likert-scale framework across siting, design, construction, operation, and environmental impact assessment (EIA). In the siting phase, downstream catchment locations showed the highest ‘Very High’ response rate (50%); however, based on mean scores (4.36 ± 0.63) and combined ‘Very High + High’ (VH + H) response rates (93%), soft ground conditions and bottom-layer soil characteristics emerged as the most prominent risk factors. In the design phase, the leachate barrier system (4.50 ± 0.65; VH + H 93%) was the key factor, while in the construction phase, geomembrane damage caused by equipment (4.14 ± 0.86; VH + H 71%) was the predominant contributor. In the operation phase, facility deterioration (3.70 ± 0.97; VH + H 68%) and natural disaster risks (3.68 ± 1.03; VH + H 60%) were most significant. Nitrogenous compounds (66.7%) were identified as the most challenging components for meeting effluent standards. From an EIA perspective, post-monitoring plans, leakage prevention measures, treatment plans, and geotechnical investigation were confirmed as essential. This study provides a comprehensive diagnosis of water contamination likelihood across landfill lifecycle phases and can serve as foundational data for planning and policy decisions.