discharge, and the characteristics of vadose zone reflected in the mitigation performance and vulnerability (Li et al. 2014, 2015, 2015). The specific indicator
system is as shown in Fig. 3.2.
According to seepage control in potential and existing sources of pollution, the
actual contaminated sites are classified into four categories: potential pollution
sources with seepage control, potential pollution sources without seepage control,
existing pollution sources with seepage control, and existing pollution sources
without seepage control. On this basis, a hierarchical rating and evaluation system
is constructed, and the specific evaluation process is as illustrated in Fig. 3.3.
3.2.2 Method for Hazard Rating and Evaluation
of Pollution Sources
3.2.2.1 MSWLFs
(1) Indicator system
A hazard rating and evaluation indicator system that considers the pollution source
characteristics of MSWLFs is constructed, including landfill volume, landfill period, landfill type, leachate production, seepage control and leachate treatment, as
shown in Fig. 3.4.
Fig. 3.2 Indicator system for rating and evaluation of groundwater pollution source intensity
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3 Rating and Evaluation of Pollution Source Intensity …