H. Brent Austin

El Paso Interim Corp. provides natural gas and related energy products in a safe, efficient and dependable manner. The company owns North America's interstate natural gas pipeline systems, which provides a stable base of earnings and cash flow and has a backlog of committed expansion projects. The company operates through three segments: Pipelines, Exploration and Production & Marketing. The Pipelines segment provides natural gas transmission, storage, and related services, primarily in the USA primarily through eight wholly or majority owned interstate pipeline systems and equity interests in two transmission systems. The Exploration and Production segment is engaged in the exploration for and the acquisition, development and production of oil, natural gas and NGL, in the US, Brazil and Egypt. The Marketing segment markets on behalf of its Exploration and Production segment and manages the price risks associated with its oil and natural gas production as well as manages remaining legacy trading portfolio. The company was founded by Paul Kayser in 1928 and is headquartered in Houston, TX.

Williams Partners LP owns, operates and acquires a diversified portfolio of complementary energy assets. It is engaged in the business of gathering, transporting and processing natural gas and fractionating and storing natural gas liquids. The company operates its business through the following segments: Gas Pipeline and Midstream Gas and Liquids. The Gas Pipeline segment includes interstate natural gas pipelines and pipeline joint venture investments. The Midstream Gas and Liquids segment includes natural gas gathering, treating and processing business and is comprised of several wholly owned and partially owned subsidiaries. Williams Partners was founded in February 2005 and is headquartered in Tulsa, OK.

Williams Pipeline Partners LP owns and operates natural gas transportation & storage assets. It owns a 35% interest in Northwest Pipeline GP, which owns and operates a natural gas pipeline system that extends from the San Juan Basin in northwestern New Mexico & southwestern Colorado through Colorado, Utah, Wyoming, Idaho, Oregon, and Washington. The frim operates through its subsidaries Williams Pipeline GP LLC and Williams Partners L.P. The company is headquartered in Tulsa, OK.

Part of The Williams Cos., Inc., Williams Pipeline GP LLC is a private company that provides investment services. The company is based in Tulsa, OK.

Williams Partners LP owns, operates, develops & acquires natural gas gathering system and energy assets. It focuses on natural gas gathering, the first segment of midstream energy infrastructure that connects natural gas produced at the wellhead to third-party takeaway pipelines. The company was founded in 2005 and is headquartered in Tulsa, OK.

Alsamora LP provides business support services. The private company is based in Houston, TX.

WPZ GP LLC owns, operates, develops and acquires natural gas gathering systems and other midstream energy assets. The company is headquartered in Oklahoma City, OK.