IRKUTSK, Russia, July 18 (Xinhua) -- A new oil slick was discovered on the surface of the Angara River in Russia's Irkutsk region late Tuesday, the Emergency Situations Ministry said.
Oil leaked from a storm sewer at the Usolmash plant, but the facility's chief engineer said there had been no accident.
There is no threat of polluting the water supply as the oil did not spread along the riverbed and the spill area was less than 0.5 hectares.
Specialists will eliminate the pollution and take water samples for testing. The federal environmental watchdog Rosprirodnadzor will investigate the incident.
Another oil slick that was caused by an excavator and a self-propelled barge that was extracting gravel was discovered in the Angara River on June 28.
