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Contamination of soil at depths more than 30-40 cm has not been registered MOSCOW, December 28. /TASS/. Scientists studied petroleum products’ concentrations in soil in Norilsk, where fuel spilled from a tank at a power plant, and said they did not find ecology hazardous contamination levels there, the Great Norilsk Expedition said in its final report. The expedition was organized by the Russian Academy of Sciences’ Siberian Branch. “The evaluation and analysis of petroleum products’ concentrations in surveyed soils of examined watersheds has not pointed to their high, ecologically hazardous levels even in the soil not far from the accident’s area,” the report reads. “Often, maximum high concentrations of petroleum products were seen not on the surface, but inside the lower layer of soil. Contamination of soil at depths more than 30-40 cm has not been registered.” ....
3 more materials “We can confirm a generally high ability of the examined microbiological system for self-cleaning from organic contaminations,” the report reads. “The research showed reduction of organic load between the site where the fuel leaked into the water and the source of the Pyasina River due to physical, chemical and biological processes associated with the water’s self-cleaning.” Experts say that in the examined areas downstream of the accident site, in the Daldykan and Ambarnaya Rivers, the oil contamination had affected the phytoplankton. Contrastingly, in Lake Pyasino and the Pyasina River they discovered the species that used to live there before the accident, which proves that there was no damage from the oil products to the water bodies ecosystem. ....
Concentrations of toxic agents near Norilsk surpass allowable safe limits Scientists explain the phenomenon by the natural conditions dictated by the close proximity of deposits of sulfide ores TASS, December 22. The concentrations of non-ferrous metals in soils and plants in the Norilsk Industrial District are above the allowable safe limits by a few times. Scientists explain the phenomenon by the natural conditions dictated by the close proximity of deposits of sulfide ores, reads the final report of the Great Norilsk Expedition of the Russian Academy of Sciences’ Siberian Branch. Read also “The concentrations of potentially hazardous elements in soils, which develop in conditions of the natural geochemical anomalies of ore fields, may exceed the average concentrations in the crust and the allowable safe concentrations by many times,” the report reads. “From soils the toxic elements get into the plants and make their way along trophic chains. Thus, the ....
Norilsk fuel storage subsidence could be thaw-induced, experts say Scientists discovered that near notorious tank No. 5 there was a gutter, along which meltwater was leaking, according to the report MOSCOW, December 21. /TASS/. Basement piles of the storage in Norilsk, where fuel spilled in May, could have subsided due to the underground waters, which had destroyed the permafrost’s layer, the Great Norilsk Expedition’s report reads. The expedition was organized by the Russian Academy of Sciences’ Siberian Branch. Read also “The survey has proved that there is a deep layer of meltwater amid the permafrost or complete absence of perennially frozen soils near tank number 5. Besides, the results point to changes in the soils’ physical features and the loss of their stability. The underground waters supposedly come from a lake, which is 200 meters to the north of tank number 5. Highly likely the underground drainage could have caused soils’ warming under ....
New scientific ecological center is to identify unstable structures near Norilsk Initial analysis of 200 key structures in the Norilsk Industrial District may be done by using satellite images, according to the researcher TASS, December 18. The first task of the Ecology Science and Research Center, which the Russian Academy of Sciences’ Siberian Branch established in December following the Great Norilsk Expedition, will be to offer a technology to identify the structures and buildings, which may collapse in the Norilsk Industrial District due to the thawing permafrost, the center’s Director Nikolai Yurkevich told TASS. Read also “The task is to offer a technology, a computer complex, which could be used to monitor engineering structures in the permafrost areas,” he said. “With an eye to that, we will provide methods and a team of scientists.” ....