Establishment of a detailed diagnosis of the existing situation of the sanitation infrastructures to be rehabilitated
Establishment of all the basic data that will be used for the dimensioning and calculation of the networks and works and for the definition of the equipment
A constructive critical analysis of the choices and conclusions retained at the level of the fea-sibility study elaborated previously
Study of the variants and solutions to be retained
The definition of the programs of the realization and the interpretation of the preparatory inves-tigations (topographic, geotechnical)
Establishment of the detailed technical specifications, Establishment of the execution plans of the works, Preparation of the CAD.