Stephanie Hildebrandt

Texaco, Inc. explores and produces oil and natural gas. It engages in the worldwide exploration, production and marketing of crude oil, natural gas, and petroleum products. The company was founded in 1902 and is headquartered in San Ramon, CA.

TRC Cos., Inc. engages in the provision of technology-enabled solutions to the power, oil and gas, environmental, and infrastructure markets. It offers planning, engineering, operations support, and consulting services. The company was founded in 1961 and is headquartered in Windsor, CT.

GulfTerra Energy Partners is the gatherer of oil and gas in the offshore Gulf of Mexico, specializing in the development of pipeline and platform infrastructure for the Deepwater Trend. Enterprise Products Partners LP acquired the company and its name was changed to Enterprise GTM Holdings LP.

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.

Enterprise GP Holdings LP explores and produces natural gas and provides other energy related services. It offers offshore pipelines and services, onshore natural gas pipelines and services, natural gas liquid pipelines and services and petrochemical services. Enterprise GP Holdings is headquartered in Houston, TX.

Duncan Energy Partners LP acquires, owns, and operates a diversified portfolio of midstream energy assets. It engages in the businesses of natural gas liquids, transportation, petrochemical and refined products, and fractionation and marketing. The company was founded by Dan L. Duncan in September 2006 and is headquartered in Dallas, TX.

Enterprise Products Operating LLC engages in the provision of processing and transportation services to producers and consumers of natural gas liquids. It operates pipelines, fractionation, processing, and octane enhancement. The company was founded in 1998 and is headquartered in Houston, TX.