METHOD
•   The soil attributes and the corresponding weights used for calculating the vulnerability index for pollution by leaching (groundwater / aquifers) are:
•Dominant surface textural class and Dominant sub-surface textural class. If the codes for surface and sub-surface textural class are “Coarse” than the corresponding weight is “1”.
•Soil type. For “Gleysol”, “Fluvisol”, “Histosol” or “Arenosol” the weight is “1”