What environmental impact will the pipeline have?
Will fishing be affected by the offshore sections of the pipeline?
Does the passing of gas through undersea piping cause changes to the climate of the marine environment?
In Olbia the pipeline passes through an environmentally sensitive region. What impact will it have on the environment?
How will the Posidonia sea grass be preserved, present along coastal landings?
What will happen to the Olbia Salt Works beach, where the pipeline will be laid?
What will be the impact of the Olbia compressor station on the landscape and the environment?
Covering an area of 19 hectares was necessary for the compressor station?
What effects will the building of the undersea section have on the sea floor ecosystem?
What will be the environmental benefits to Sardinia by using methane?
In the Porto Botte area, the pipeline crosses the Salt Works and an environmentally very sensitive wetland. What solutions will be adopted not to damage these areas?
Will the Porto Botte metering and reduction terminal have effects on the surrounding environment? Is this a polluting system?
After the construction, will it be possible to resume agricultural activities on the lands crossed by the pipeline?
What environmental impact will the pipeline have?
The environmental impact will be minimum and limited to the construction stage. The offshore stretches of the pipeline will be laid on the sea bed avoiding the need to dig trenches or disturb the marine environment. The onshore pipeline will be completely buried underground leaving no trace on the surrounding landscape. Once the digging, pipelaying and burial phases are complete, mitigation measures described in the environmental impact study will be taken to fully restore the original natural habitat.
Will fishing be affected by the offshore sections of the pipeline?
Once the pipeline is operational there will be no restrictions to fishing along the route. Fishing does not interfere in any way with the security and the presence of pipeline. Fishing will only be restricted at the construction stage and for limited time periods and areas.
Does the passing of gas through undersea piping cause changes to the climate of the marine environment?
No. The gas in the pipeline is completely isolated from the marine environment and has no effect on sea temperature.
In Olbia the pipeline passes through an environmentally sensitive region. What impact will it have on the environment? Does the law permit it?
Energy infrastructure works of the size of Galsi must pass an Environmental Impact Assessment by the Ministry of the Environment and the Ministry for Arts and Culture, in consultation with the Regional Authorities. The Galsi Environmental Impact Study highlights the impact of the construction and operation stages and demonstrates that the projects presents no incompatibilities with the environment through which it passes. The study has been made public and can be consulted at the Public Relations Offices of the Regions concerned or on the Region of Sardinia web site: http://www.regione.sardegna.it/progettogalsi/.
How will the Posidonia sea grass be preserved, present along coastal landings?
Pipeline laying operations in the landing areas have been defined adopting significant impact mitigation measures, among which the use of a sophisticated laying technique called "post-burying" which greatly reduces the length of the trench, thus safeguarding a higher number of Posidonia. Further precautions will also be adopted to minimize interference with Posidonia. In particular, the construction stages that imply interaction with the sea bed will be carried out in clement weather conditions, in order to reduce deposit transportation. Galsi is also studying an avant-garde technique to replant Posidonia.
What will happen to the Olbia Salt Works beach, where the pipeline will be laid?
The Olbia Salt Works Beach will remain intact, even during construction. Galsi will utilize an advanced laying technique called "microtunneling" which implies digging an underground tunnel in which the pipeline passes without any need to make excavations and surface trenches. This makes it possible to preserve the beach and its inland lakes, keeping them untouched also during construction.
What will be the impact of the Olbia compressor station on the landscape and the environment?
Galsi has already demonstrated that the impacts (noise and emissions) are clearly far below legal limits for the zone in its Environmental Impact Study presented to the authorities.
Covering an area of 19 hectares was necessary for the compressor station?
Although Galsi applied for 19 hectares, the area effectively occupied by buildings and warehouses will be only a small portion of that: large areas of greenery are planned to screen the buildings and for internal maintenance roads.
What effects will the building of the undersea section have on the sea floor ecosystem?
The offshore stretches will be laid using special techniques designed to reduce to a minimum the impact on the ecosystem during construction. Once the pipe has been laid and completely buried (nearshore), the natural equilibrium will be progressively restored. The pipeline will not interfere in any way with marine ecosystem since it produces no emissions or variations in water temperature.
What will be the environmental benefits to Sardinia by using methane?
The use of methane will improve the environmental conditions, especially that of air quality. According to a survey carried out by AIEE (Italian Association of Energy Economists) the use of methane in the electric industry, for industrial and civil thermal uses, and in transport, is estimated will entail a 14% reduction of current CO2 emissions in Sardinia, equal to approx. 2.5 million tons of CO2 per year.
In the Porto Botte area, the pipeline crosses the Salt Works and an environmentally very sensitive wetland. What solutions will be adopted not to damage these areas?
During operation, the gas pipeline will be buried and invisible and therefore will not interact with surrounding environments and with animal species living in the Salt Works and the wetland of Porto Botte. During the laying stage of the pipeline, measures will be taken to reduce interference to a minimum in these areas, such as: reduction of the work track, reduction in construction times and preference for times when birds do not nest for construction works.
Will the Porto Botte metering and reduction terminal have effects on the surrounding environment? Is this a polluting system
The task of the Porto Botte terminal is to measure the quantity of incoming gas from the pipeline and adjust pressure before it is led to the land transport network in Sardinia. There will therefore be no systems generating emissions or noise in the Porto Botte terminal. The operation of the pressure regulation and metering system will be electronically checked without any need for permanent staff and operating machines. Therefore, the terminal has no impact at all on the surrounding environment.
After the construction, will it be possible to resume agricultural activities on the lands crossed by the pipeline?
After gas pipeline construction works, each type of agricultural activity, including those connected with the planting of trees, such as olive groves, can be resumed, even within the 20 metres buffer area.