In the negotiated procedure public tender, published in awarding of the septic tank cleaning, sewerage raising, waste water transportation service, as well as the automatic drainage for the cleaning of the networks and sewage systems service, to be carried out under daytime, night-time, week day, holiday and week end emergency response, throughout the area managed by Hera S.p.A., for an annual tender amount estimated as Euro 7.5 million, of the 60 points reserved for the technical component, 24 points were reserved for social sustainability (staff training on safety, first aid and fire fighting, training with regard to locations suspected of pollution or bordering areas, possession of OHSAS 18001 certification and accident rate) and 10 points were reserved for environmental sustainability (possession of ISO 14001 environment certification and age of equipment used).