In order to aid the decision-making problem a structural hierarchy
was formed using the following levels: (i) landfill site selection;
(ii) environmental, socio-cultural and technical-economical
factors; and (iii) criteria and subcriteria (Figure 2). Every criterion
was evaluated by a point allocation approach. It is one of the
simplest rating methods and is based on allocating points ranging
from 0 to 10, where 0 indicates that the point is not suitable and
10 represents the best situation for that criterion