EQT Midstream Partners, LP (EQM) owns, operates, acquires and develops midstream assets in the Appalachian Basin. The Company's segments include Gathering and Transmission. The Gathering segment primarily includes high pressure gathering lines and the Federal Energy Regulatory Commission (FERC)-regulated low pressure gathering system. Transmission includes EQM's FERC-regulated interstate pipeline and storage business. The Company's operations are primarily focused in southwestern Pennsylvania and northern West Virginia. As of December 31, 2016, the Company provided midstream services to EQT Corporation (EQT) and a range of third parties across 24 counties in Pennsylvania, West Virginia and Ohio through its two assets: the gathering system, which delivered natural gas from wells and other receipt points to transmission pipelines, and the transmission and storage system, which served as a header system transmission pipeline.