Table 2 Description and original weights of the intrinsic and specific model parameters (Babiker et al. 2005)
Model parameters | Parameter description, original weight |
|---|---|
Depth to water | Represents the depth from the surface to the groundwater table levels, 5 |
Net Recharge | Represents the amount of water that penetrates the ground surface and the water table responsible for contaminant transport, 4 |
Aquifer media | Refers to the saturated zone material properties, which controls the pollutant attenuation processes, 3 |
Soil media | Refers to the uppermost weathered portion of the unsaturated zone and controls the amount of recharge that can infiltrate downward, 2 |
Topography | Refers to the slope of the land surface, it dictates whether the runoff will remain on the surface to allow contaminant percolation to the saturated zone, 1 |
Impact of vadose zone | Refers to the unsaturated zone material; it controls the passage and attenuation of the contaminated material to the saturated zone, 5 |
Hydraulic conductivity | Refers to the ability of the aquifer to transmit water, hence determining the rate of the flow of contaminant within the groundwater system, 3 |