Open tender, with the criterion of awarding the most economically advantageous offer based on the price for the provision of services, for the Operation and Maintenance of the Waste Treatment Unit (WTU) of the BIPETH, with a budget of €180,000.00 plus VAT, for a period of three ( 3) months, with the possibility of exercising an option of twenty-three (3) additional months and a total budget, including the option, of €360,000.00 plus VAT (EXPIRED)