Diving into the Baltic Sea: environmental surveys

Nord Stream 2 aims to meet the highest standards for environmental protection. That’s why environmental studies are currently underway to deepen the company’s understanding of the underwater environment and help identify ways to minimise the pipeline’s environmental impact.

A number of baseline marine studies have been conducted in the countries along the Nord Stream 2 route. Water samples and sediment samples have been collected in order to estimate the existing concentration of contaminants  and nutrients occurring in the environment. Additionally, the status of the marine life has been investigated, with particular focus on benthos, plankton, fish, marine mammals and birds. Underwater noise has also been measured. The data collected, used together with sophisticated modelling techniques, makes it possible to predict if and how potential impacts may spread. These studies make it possible to more accurately model how the local environment could be affected by the pipeline.

Identification of sulphates in bottom sediment

These baseline studies extend the significant knowledge base developed over several years for the existing Nord Stream pipeline. This means that Nord Stream 2 can draw on real life results from the first pipeline’s construction and operation, in addition to modelling, to understand and mitigate potential environmental impacts.

These initial assessments feed into some of Nord Stream 2’s Environmental Impact Assessment documentation and permitting applications, but environmental surveying doesn’t stop there. This initial data provides parameters for the environmental monitoring programmes that will be carried out throughout the construction period and continue once the pipeline is operational.

Testing samples for heavy metals