Environmental damage assessment case study of a cooking plant contaminated site
ZHANG Hong-zhen1, DONG Jing-qi1, WU Shun-ze1, WANG Jin-nan1, ZHANG Tian-zhu2
1. Department of Environmental Engineering, Chinese Academy for Environmental Planning, Beijing 100012, China; 2. School of Environment, Tsinghua University, Beijing 100084, China
Abstract:Taking a cooking plant site contaminated by Polycyclic Aromatic Hydrocarbons (PAHs), benzene as example, soil and groundwater contamination damage assessment was carried out using Resources equivalency analysis (REA) methods, and uncertainty of results were also analyzed. The results show that, there is significant difference between the damage assessment results, which is 2.71 billion RMB, and actual site remediation cost, which is 2.05 billion RMB. The former is evidently larger than later. Social discount rate (1%~5%) influences the soil contamination damage assessment result most, and for groundwater, the most important factors are thickness of contaminated groundwater layer (3~9m), porosity of aquifer (0.25~0.35), social discount rate (1%~5%) and remediation cost per unit groundwater (4000~5000 Yuan/m2).ERA can be practically used to assess soil and groundwater contamination damage at contaminated industrial site, with a strong theoretically and technically basis. But we need refinement of legislation and specific technical guideline to standard the EDA content, process and method.
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