In the open procedure public tender of Herambiente for the service for recovery and transportation of biodegradable waste deriving from collection in the provinces of Bologna and Modena, for a tender amount of around Euro aspects, 36 were assigned to environmental sustainability (ISO 14001 environmental certification, ISO 50001 energy certification, waste traceability and recovery ), 6 to social sustainability (OHSAS 18001 safety certification and SA 8000 social responsibility certification) and 28 to other technical aspects.