Headquartered in Houston, Texas, Summit Midstream Partners, LP (NYSE: SMLP) is a value-driven master limited partnership focused on developing, owning and operating midstream energy infrastructure assets that are strategically located in unconventional resource basins, primarily shale formations, in the continental United States.We currently operate natural gas, crude oil and produced water gathering systems in five unconventional resource basins:the Appalachian Basin, which includes the Marcellus formation in West Virginia;the Williston Basin in North Dakota, which includes the Bakken and Three Forks shale formations;the Denver-Julesburg Basin, which includes the Niobrara and Codell shale formations in Colorado and Wyoming; the Fort Worth Basin in Texas, which includes the Barnett Shale formation; andthe Piceance Basin in Colorado, which includes the liquids-rich Mesaverde formation as well as the emerging Mancos and Niobrara Shale formations.Our systems and the basins they serve are as follows:the Mountaineer Midstream system, which serves the Appalachian Basin;the Polar & Divide system, which serves the Williston Basin;the DFW Midstream system, which serves the Fort Worth Basin;the Grand River system, which serves the Piceance Basin; andthe Niobrara G&P system, which serves the DJ Basin. Since our formation in 2009, our management team has established a track record of executing this strategy through the acquisition and subsequent development of DFW Midstream, Grand River, Polar & Divide, Mountaineer Midstream, Niobrara G&P, and Double E Pipeline.