Summit Midstream Partners, LP is a limited partnership focused on developing, owning and operating midstream energy infrastructure assets. The Company’s assets are located in the producing areas of unconventional resource basins, primarily shale formations, in North America. It provides natural gas gathering, treating and processing services pursuant to long-term and natural gas gathering and processing agreements with its customers and counterparties. The Company conducts its operations in the midstream sector through four segments: the Marcellus Shale, which is served by Mountaineer Midstream; the Williston Basin, which is served by Bison Midstream; the Barnett Shale, which is served by DFW Midstream, and the Piceance Basin, which is served by Grand River. It operates in four unconventional resource basins: the Appalachian Basin; the Williston Basin; the Fort Worth Basin, and the Piceance Basin.