The U.S. American Embassy in Nouakchott, Mauritania seeks services of a qualified and specialized contractor to perform preventive maintenance services of 36 generators systems located in the residenc... The U.S. American Embassy in Nouakchott, Mauritania seeks services of a qualified and specialized contractor to perform preventive maintenance services of 36 generators systems located in the residences. The related service description is provided as an attachment to this notice. This contract will cover a base year and three option years.