The Green flag is quarterly  awarded to the contractors,  which demonstrated the the best  performance indicators, as per international ELC standards (enveroinment, labor relations and in social sphere) and is  some kind of recognition of its achievements in these aspects.
   For the second quarter of 2019 NSS has illustrated the highest results in hazardous materials and wastewater management it has illustrated careful attitude to the resources and effective water saving activity.
   NSS will continue to strive to maintain high standards of work, continuously improve and meet all requirements of the Customer