For the management of construction sites, Ternai has equipped itself with operating instructions – “Management of environmental aspects during plant construction” – to ensure observance of the environmental policy adopted by the Company. It provides in particular for the construction site and the new service roads to be located in areas of lesser vegetative value (agricultural areas) whenever that is compatible with the technical requirements of the plan.
However, if the areas regard natural or semi-natural habitats, after the work has been completed, the area concerned must be environmentally restored to a condition that is as close as possible to what it was previously. Scheduling the stages of construction must take into account the vital needs of the species that are potentially affected and avoid the activities with the greatest impact during the periods when the species reproduce.
Furthermore, particular care must be taken in managing the waste produced on the construction site in accordance with the relevant regulations in force, such as avoiding spills and the temporary storage of polluting substances.  
The available technologies are to be adopted to reduce noise produced by stations and the corona effect of electric lines.

Contract work
The operating instructions “Management of environmental aspects during plant construction” provide instructions for minimizing environmental impact along the supply chain.
The obligations regarding the environment that apply to contract work entrusted to other companies were established according to the provisions of the applicable environmental laws and prescriptions of the ISO14001 standard and include aspects such as: preventive measures against contamination of water table, the limitation of damage to vegetation, the management of accidents, minimization of air emissions and noise, vehicle use, and the correct management of waste and excavated land.