Stephen O. McNair

TEPPCO Partners LP is a publicly traded energy logistics partnership with operations that span much of the continental United States. TEPPCO owns and operates an extensive network of assets that facilitate the movement, marketing, gathering and storage of various commodities and energy-related products. The partnership's midstream portfolio of assets comprises pipelines that gather and transport refined petroleum products, crude oil, natural gas, liquefied petroleum gases (LPGs) and natural gas liquids (NGLs), and includes one of the largest common carrier pipelines for refined petroleum products and LPGs in the United States. TEPPCO also owns a marine business that operates primarily on the United States inland and Intracoastal Waterway systems, and in the Gulf of Mexico.

Duke Energy Field Services (DEFS) is a midstream energy company that gathers, treats, compresses, processes, transports, markets, and stores natural gas and produces, fractionates, transports, trades, and markets natural gas liquids (NGLs). It is located in Denver, CO.

EnLink Midstream Partners LP provides integrated midstream services across natural gas, crude oil, condensate, and NGL commodities. It operates through the following segments: Permian, Louisiana, Oklahoma, North Texas, and Corporate. The Permian segment covers the natural gas gathering, processing, and transmission activities and crude oil operations in the Midland and Delaware Basins in West Texas and Eastern New Mexico and crude operations in South Texas. The Louisiana segment consists of natural gas pipelines, natural gas processing plants, storage facilities, fractionation facilities, and NGL assets located in Louisiana and crude oil operations in ORV. The Oklahoma segment refers to the natural gas gathering, processing, and transmission activities, and crude oil operations in the Cana-Woodford, Arkoma-Woodford, northern Oklahoma Woodford, STACK, and CNOW shale areas. The North Texas segment comprises of natural gas gathering, processing, and transmission activities in North Texas. The Corporate segment are unconsolidated affiliate investments in the Cedar Cove JV in Oklahoma, ownership interest in GCF in South Texas, derivative activity, and general corporate assets and expenses. The company was founded on July 12, 2002 and is headquartered in Dallas, TX.

Eagle Rock Energy Partners LP engages in the exploitation, development, and production of oil and natural gas properties. It provides ancillary gathering, compressing, treating, processing, and providing marketing services to its production of natural gas, natural gas liquids, condensate, and crude oil. The company was founded on May 25, 2006 and is headquartered in Houston, TX.

Part of Grizzly Energy LLC, Eagle Rock Energy G & P LLC is a company based in Houston, TX. Scott W. Smith has been the CEO of the company since 2015.

UL Water Midstream LLC operates as a joint venture between H2O Midstream and Layne Water Midstream. It designs full-cycle water midstream solution for University lands in the Delaware Basin. The company is headquartered in Houston, TX.