Foundation System for Contaminated Sites (Guideline)

The rapid development of urbanization has led to urban problems such as shortage of urban land, traffic jams, and environmental pollution, which seriously restricted the sustainable development of urbanization. The accumulation of heavy metals and organic matter in natural soil not only pollutes the soil and water environment, directly endangers people's physical and mental health, but also causes changes in the nature of foundation engineering, resulting in engineering damage and destruction. Therefore, it is necessary to deal with and control the problem of urban industrial pollution foundation, so that it cannot only meet the needs of environmental safety but also achieve the function of development and utilization. The purpose of this guide is to provide appropriate remediation methods for contaminated sites. This guide provides a classification analysis for different pollutants, contaminated land (industrial sites, landfills). Conduct a study of the steps of the risk assessment procedure, including the definition of a conceptual model, the determination of contact point concentrations, actual risk calculation, decision evaluation, etc. And consider the foundation system issues, including the corrosion of the foundation by the polluted soil, the assessment of the foundation of the polluted soil, etc. During the whole process, monitoring is required, including personnel protection and vehicle control, process requirements for exsitu disposal of contaminated soil and groundwater, treatment of the ‘three wastes’ in disposal materials, disposal of enriched media, and regular monitoring. This guide provides cases classified by remediation technology for reference, including PRB technology case, chemical oxidation remediation case, chemical oxidation combined technology case, and ex situ thermal desorption technology case (This case mainly considers supervision).