IN SITU

   The environmental decontamination works in the place of accidental spillages of oil and oil products are carried out from April to September. From November to March the contaminated soil is removed by transporting it from the spillage place or isolating there.



Decontamination of environment polluted by oil is made according LAND9-2009 requirements:

• Investigation of contaminated site;
• A laboratory analysis of the contaminated soil or water is carried out;
• The site of contamination is cleaned using mechanical means and sorbents;
• The preparation “Degradoilas” is made and prepared for use;
• The contaminated territory is sprayed with prepared solution;
• The process of the oil pollutants degradation is supervised and controlled – the soil is moistened and mellowed.

   The cleaning period of the contaminated site depends on the nature of contaminants and the other conditions. This period may be last from 20 days to 18 months. The contaminated environment is cleaned up using self-propelling machinery with tanks pumps and spraying equipment.


The main liquidated accidential spillages:

Location	Quantity of contaminant purified and/or area of clean up	Additional information
Juknaiciai, Lithuania	140 t of fuel oil, 3 km along railroad	Soil pollution resulting from train accident. Service completed in July 1989.
Mozyr oil refining plant, Byelorussia	~5000 m3 of oil sludge, 6 ha of plant territory	Accident in waste water cleaning station. Service completed in July 1991.
Venspils railway station, Latvia	180 t diesel oil spilt, 2,5 km along railroad	Railway accident of 3 tanks. Service completed in June 1992.
Nemunas River, Lithuania	500 t of fuel oil, 50 km of coast line	Accident of oil tank. Service completed in December 1992.
Mažeikiai oil refining plant, Lithuania	450 t of crude oil, 1,2 ha plant territory	Accident in oil pumping station. Service completed in September 1994.
West Siberian oil fields at Poikovo, Russia	33 ha of crude oil polluted water bodies, marshes, soil	Accidents in pipe-lines. Service completed in September 1994 - September 1995.
West Siberian oil fields at Nefteyugansk, Russia	141 ha of crude oil polluted water bodies, marshes, soil	Accidents in pipe-lines. Service completed in September 1996 - September 1998.
JSC “Lietuvos geležinkeliai”, Lithuania	Purification of 910 t of soil polluted by diesel oil	Railway accident of 3 tanks. Service completed during 2000.