METHOD
•   The soil attributes and the corresponding weights used for calculating the vulnerability index for pollution by leaching (groundwater / aquifers) are:
•Dominant limitation to agricultural use. If the codes for this attribute are: “Drained”, “Quasi permanently flooded” or “Phreatic phase” then the weight is ”1”.
•Secondary limitation to agricultural use. If the codes for this attribute are: “Drained”, “Quasi permanently flooded” or “Phreatic phase” then the weight is ”0.5”.