Keystone Pipeline operator agrees to pay $26.9m civil penalty and $40m in safety spending over largest US onshore crude spill in nine years

The operator of the Keystone Pipeline system has agreed to a proposed legal settlement with the US government that would require it to pay a $26.9 million civil penalty and spend a further approximately $40 million on measures to prevent future accidents. The settlement relates to a major oil spill in Kansas in December 2022. The Kansas incident was the largest onshore crude pipeline spill in the United States in nine years and exceeded the combined volume of all 22 previous spills on the Keystone system, a statistic drawn from a 2021 report by the US Government Accountability Office (GAO, the federal audit and oversight body). The settlement structure, combining a monetary penalty with a mandatory capital spend on accident prevention, reflects a common regulatory enforcement model in pipeline and energy infrastructure cases: the penalty addresses past harm, while the remediation spend is intended to reduce future risk. For lawyers advising energy infrastructure clients, the Keystone settlement illustrates the multi-layered exposure that pipeline operators face following a significant spill, covering regulatory penalties, potential civil claims from landowners and environmental groups, and mandatory operational remediation. The pipeline runs from Canada to the United States and is a significant piece of North American crude oil infrastructure. The settlement remains subject to legal approval as a proposed consent decree.