The environmental agency known as Rosprirodnadzor previously requested Norilsk to settle the $1.96 billion claim voluntarily, before threatening legal action in September. Norilsk set aside $2.1 billion in the first half of the year to cover the accident, reducing its net profit for the period to just $45 million from close to $3 billion a year earlier.
"I am not surprised by this turn of events as I initially expected the government to have a free hand in determining the amount of the fine (which was set at a record value) and enforcing it," George Voloshin, the head of the Paris branch of independent integrity risk consultancy Aperio Intelligence, told S&P Global Market Intelligence.
Norilsk described the watchdog's decision to pursue the matter through the court as "premature," in a same-day statement. Even though the cleanup of one of the rivers contaminated by the accident has been completed, the final amount of diesel collected has not yet been assessed, according to the group.
Only the completion of an ongoing expert review will reveal how much fuel was spilled and the resulting cost of the environmental damage, Norilsk said.
The leading nickel and palladium producer blamed the collapse of an aging Soviet-era fuel tank in May, which disgorged 21,163 tonnes of diesel into the surrounding area, on melting permafrost and has disputed Rosprirodnadzor's calculation of the damages caused by the incident.
The spill was the 1st in a series of highly polluting incidents in the High North over the summer that have overshadowed Norilsk's multibillion-dollar efforts to reduce its notoriously heavy environmental footprint. Unscheduled inspections between August and September by Rosprirodnadzor of the facility responsible for the 1st spill identified 139 violations and revealed the site's equipment to be "worn out" and "obsolete."