Oil major BP has appealed a federal judge’s ruling on the size of the 2010 Gulf of Mexico oil spill.
It leaves the company potentially liable to pay $13.7billion in fines.
Last month, US District Judge Carl Barbier in New Orleans ruled that 3.19 million barrels of oil had spilled into the Gulf following the disaster.
The appeal also comes just days after the Judge rejected the company’s attempt to reduce the maximum civil fine BP could face.
The decision could see the company pay $13.7billion in fines under the federal Clean Water Act.
BP has argues it should pay a maximum fine of $3,000 per barrel, compared to the $4,300 level set by the federal government.
Since the spill, the company has incurred more than $42billion of costs for the spill, including for clean-up, fines and compensation.