Provision of Construction of borehole equipped with solar pumping, water tower and supply system for the nursery and reforestation sites in Bol, Yakoua reforestation, Birim, Ngouri in the province of Lac and Mailao, Tchentchou, Laki 3, Toukra Massa in the province of Chari-Baguirmi and in the vicinity of N'Djamena.