MOSCOW, November 3 — RIA Novosti. Cyanide, got into the river in the East Kazakhstan region, already decomposed, and therefore will not be able to reach on riverbeds to Russia, told RIA Novosti on Thursday, Deputy Head of the Federal Agency for Water Resources (Rosvodoresursy) Basil Kuryanov.
Emergency discharge of cyanide gold-mining company came in Volchovka stream (tributary Sekisovka) of East Kazakhstan region on October 29. The maximum permissible concentration (MPC) of cyanide exceeded more than 500 times, said on Wednesday the press service of Kazakhstan Ministry of Emergency Situations.
"The chemical indicators cyanide itself decomposes in water, leaves in the bottom sediments. As Kazakh colleagues told us, they made a barrier for gauging, reorganize. Contact with cyanide in Russia was just no "- said Kuryanov, who is also co-chair of the Russian-Kazakh Commission for the Protection of Transboundary Waters.
According Kuryanova, dumping cyanide into the creek Volchovka occurred because of the slope wash to tailings dam No. 3 Mining Enterprise "Sekisovskoe." Creek is a tributary of the River Sekisovka, which flows into the river Malaya Ubinka, which flows into the river Uba, and that in Shulba Reservoir, located on the Irtysh River. Length along the river channels from the accident site to the border of the Omsk region is 1.2 thousand kilometers.
"According to experts and Rosvodoresursov Roshydromet Irtysh river ecosystem naturally cleaned every 200 kilometers. Therefore, the threat of pollution in the Omsk region is not at all, "- said the source.
Environmentalists from NGOs agree that cyanide rapidly disintegrated and no threat to the Russian rivers.
"Cyanide used in gold mining, are very unstable in the environment, the period of existence in a dangerous form of counted clock. This is a very dangerous substance, but it is degraded by sunlight and the presence of oxygen. Specific time and area of damage depends on geography. It is very likely that in a few days after the accident, traces of cyanide will not be found ", — said the director of the environmental programs of the" Green Patrol "Roman Pukalov.