Governor Jack Dalrymple has asked the federal government to review its oversight of pipeline safety.
In a phone conference with the administrator of the federal Pipeline and Hazardous Materials Safety Administration, Dalrymple says he's worried that pipeline regulations fall short in protecting rural areas from spills.
He asked the administrator to look over the requirements for rural pipeline safety.
The governor also requested that the agency keep him abreast of the investigation into the Tesoro pipeline spill near Tioga - the largest pipeline spill in the state.
Dalrymple also contacted a vice president at Tesoro for an update on what the company is doing to improve safety along the pipeline that failed.
The Tesoro exec said the company has monitors along the entire pipeline north of Mandan, as well as shut-off valves on both sides of the Missouri River.