In the procedure further to the public Qualification System for the entrusting of the refuse bin maintenance service (Euro of the 60 points reserved for the technical component 18 points have been reserved for social sustainability (6 points for the accident severity/frequency indexes, 3 points for safety training, 3 for possession of health and safety in the workplace management systems and/or possession of OHSAS18001 certification, 3 points for possession of management systems pertaining to corporate social responsibility and/or possession of SA8000 certification, 3 points for employment of socially disadvantaged individuals) and 8 for environmental sustainability (3 points for possession of environmental procedures and/or ISO14001 certifications, 5 points for assessment of environmental impact of vehicles).