METHOD
•   The soil attributes and the corresponding weights used for calculating the vulnerability index for pollution by runoff (surface waters) are:
•Wet front hydraulic conductivity (derived pedotransfer function). For values less than 4 mm h-1 the corresponding weight is “1”
•Maximum available water (derived pedotransfer function). For values less than 10 cm and wet front hydraulic conductivity less than 5 mm h-1 the weight is “1”