Apache Canada has been fined and warned by Alberta's regulator for a 2013 spill.
Sometime during the first week of May 2013, an Apache pipeline in the Zama region of northern Alberta began to leak process water heavily contaminated with salt.
That leak released 15 million litres into the surrounding muskeg.
The company reported the leak to the regulator on 1 June.
Prevention of future pipeline spills
On Tuesday, the regulator ordered the company to hire an independent auditor to check how it maintains pipeline safety. The auditor's recommendations must be in place by the end of the year.
As well, Apache has until October to tell the regulator how it plans to prevent future releases. Apache has already complied, the regulator said.
Edited from various sources by Elizabeth Corner
Sources: CBC, Canadian Manufacturing