This clause envisages that a portion of outsourcing equating to applies 15% on the basis of an agreement entered into in March 2012 with the trade union organisations and with the Group union co-ordination) of the economic volume of the sweeping, collection, waste transportation, septic tank cleaning and rubbish skip cleaning activities are excluded from the obligation to apply the CCNL (national collective labour agreement) for waste management services by means of the definition of social inclusion projects.