1. Civil Engineering Graduate Program , Federal University of Pará – PPGEC/ITEC/UFPA , Av. Augusto Corrêa, 01, 66075-110 , Belém , Brazil .
2. School of Environmental and Sanitary Engineering , Federal University of Pará – FAESA/ITEC/UFPA , Av. Augusto Corrêa, 01, 66075-110 , Belém , Brazil .