Williams Partners L.P., formerly Access Midstream Partners, L.P., owns, operates, develops and acquires natural gas, natural gas liquids (NGLs) and oil gathering systems, and other midstream energy assets. The Company’s business segments include Access Midstream, Northeast G&P, Atlantic-Gulf, West and NGL & Petchem Services. The Access Midstream segment provides gathering, treating, and compression services to producers. The Northeast G&P segment includes natural gas gathering and processing and NGL fractionation businesses. Atlantic-Gulf segment includes its interstate natural gas pipeline, Transcontinental Gas Pipeline Company, LLC (Transco), and natural gas gathering and processing and crude oil production handling and transportation. The NGL & Petchem Services segment includes its 88.5% interest in an olefins production facility in Geismar, Louisiana, along with an RGP Splitter and various petrochemical and feedstock pipelines.