The National Sanitation Office of Senegal is inviting bids to construct and rehabilitate domestic sanitation works in Dakar, Senegal.  The project is divided into two lots: Lot 1 comprises 5,000 works in the municipalities of Keur Massar, Malika, Yeumbeul Nord and Yeumbeul Sud Lot 2 comprises 5,000 works in the municipalities of Mbao, Bambilor, Bargny, Jaxaay