Del Mar Exploration Company

Gateway owns and operates approximately 800 miles of natural gas gathering, transportation and distribution systems and related facilities in Texas, Oklahoma and offshore in federal waters in the Gulf of Mexico. It has the license in the continental United States for a process for the removal of nitrogen from natural gas streams. A nitrogen rejection unit utilizing this process is operating at the Madisonville Treating Facility in Madison County, Texas. Gateway is pursuing several additional projects to employ its nitrogen rejection technology in geographic areas with high nitrogen natural gas reserves. The company gathers natural gas production and liquid hydrocarbons and then aggregates this production for processing and transportation to other pipelines. Gateway also transports natural gas through its mainline systems. Gateway manages its assets through its wholly owned subsidiaries, Gateway Offshore Pipeline Company, Gateway Pipeline Company, Fort Cobb Fuel Authority, Gateway Processing Company and Gateway Energy Marketing Company.

Plains Marketing is a subsidiary of Plains All American Pipeline, a master limited partnership engaged in interstate and intrastate crude oil transportation. The company also gathers, markets and stores crude oil, as well as markets and stores liquefied petroleum gas and other petroleum products. Plains All American Pipeline has a 50 percent ownership in PAA/Vulcan Gas Storage, which develops and operates a variety of natural gas storage facilities. It is one of the largest independent midstream crude oil companies in North America. The company handles more than 3 million barrels per day of physical crude oil through a network of assets throughout the United States and Canada. Plains Marketing maintains a location in Houston.

Founded in 1998, Motiva Enterprises is a joint venture of Saudi Refining and Shell Oil Company that refines, distributes and markets oil products. It offers truckload and bulk oil products and services for businesses and wholesalers. The company also provides storage, scheduling, accounting and delivery services for light and heavy oil hydrocarbons. Motiva Enterprises operates more than 7,700 shell-branded gasoline stations, refineries and storage terminals. It serves clients in the eastern and southern United States. In addition, the company maintains Convent Refinery and Norco Refining Company. Motiva Enterprises serves clients in the retail, distribution and commercial industries. It is owned by Saudi Refining and Shell Oil Company.