The dossier presented is phase 4 of work on the Cabassou – Madeleine watershed and is the third phase of the construction of a wastewater collection network in the Bonhomme district. The objective of this project is therefore to continue the implementation of the collective sanitation on the Bonhomme district started with phase 1 of the work of the BV Cabassou Madeleine and allowed by phase 2 which aimed to upgrade the transfer equipment (channeling and PR). CACL therefore wishes to continue the extension of its collection network, to areas planned for collective sanitation, with the objective of collecting almost all the peripheral sectors of downtown Cayenne. To this end, 7 project management packages have been launched and financed in part by the ERDF. The Cabassou Madeleine watershed is one of these lots.