Every year, around 200 oil and gas tankers from various
worldwide ports arrive at Prigorodnoye sea port. World experience
shows that the ballast water taken in at ports for the purpose of
vessel stability may contain dangerous invasive species which, if
discharged in Prigorodnoye port, may lead to irreparable damage to
the ecosystem existing in Aniva Bay.
LNG tanker at the LNG jetty, Aniva Bay
The company is taking a complex set of measures to preserve the unique ecosystem of Aniva Bay, including environmental monitoring of its flora and fauna on the assessment of ballast water effect.
The goal of the monitoring is to minimise a risk of introduction dangerous invasive species into Aniva Bay during ballast water discharge in Prigorodnoye port.
Ballast water monitoring programme consists of two interrelated parts. In the first part since April to November – when risk of introduction and adaptation of unwelcome invasive species is the highest – ballast water samples is taken from each vessel, when it is technically possible. The samples are checked on different parameters, including on presence of potentially dangerous species. Experimental data of many years’ monitoring shows the absence of dangerous invasive species inside of ballast water tanks, this fact substantiate the сompany is following internal policy and International Convention.
In the second part – also since April to November – Sakhalin Energy is conducting offshore environmental monitoring of biota into Prigorodnoye port. The monitoring was launched in 2007 and sampling stations covers the area between oil and gas tanker-berthing facilities. The samples of phyto-, zoo-, ichthyo-plankton, benthic communities, marine fouling are collected and analysed for a set of parameters (species diversity, seasonal abundance and biomass, ecogeographical spectrum, spatial distribution, variability principles).
Monitoring results provide the high efficiency of current measures of control. The company intends to continue paying close attention to protecting Aniva Bay ecosystems.