BISMARCK - North Dakota's Public Service Commission will hold two hearings in early June on proposed oil pipeline conversions.

Belle Fourche Pipeline Company has applied to convert a gathering pipeline to a transmission line. No new construction is planned for the project.

The 24-year-old pipeline has seen extensions since 2011 in the Dickinson area. The pipeline starts in Billings County about 10 miles north of Belfield, running 18 miles to the Dickinson Refinery owned by Marathon Petroleum.

The PSC's hearing for public comment on the project is set for noon Mountain Time on June 10 at the TownePlace Suites by Marriott in Dickinson.

The same company has also applied for another gathering pipeline near Watford City to be converted to a transmission line. The 20-mile pipeline runs through rural McKenzie County, starting south of Watford City.

No new construction is set for this project either. The pipeline consists of connecting segments laid and connected from 1978 to 2012.

The PSC's hearing for public comment is set for 9 a.m. CT on June 11 at Teddy's Residential Suites in Watford City.