NuStar Pipeline Operating Partnership, a subsidiary of US energy assets company NuStar Energy, has settled federal allegations over inadequate tank terminal spill operations.
The company has agreed to pay a $450,000 (332,000) fine for allegations that it did not prepare and maintain proper spill response plans at eight of its storage terminals.
The settlement involves NuStar terminals in Nebraska, Iowa, and Kansas. The eight sites have a combined storage capacity of more than 71 million gallons of crude oil.
The federal Clean Water Act requires facilities that store large quantities of crude oil and petroleum products to develop response plans that outline procedures for addressing worst-case discharges.
EPA said that it initially discovered that several NuStar facilities did not have such plans during inspections in 2006. It said that the company subsequently prepared response plans for each of the facilities after the agency initiated an investigation.
In addition the company will spend another $768,000 on a supplemental environmental project to install and operate tank volume monitoring and alarm systems at several of its facilities.