Regency Energy Partners LP (the Partnership) is engaged in the gathering and processing, contract compression, treating and transportation of natural gas and the transportation, fractionation and storage of natural gas liquids (NGLs). The Partnership operates in five business segments: Gathering and Processing, Joint Ventures, Contract Compression, Contract Treating, and Corporate and Others. Its assets are primarily located in Texas, Louisiana, Arkansas, Pennsylvania, California, Mississippi, Alabama, West Virginia and the mid-continent region of the United States, which includes Kansas, Colorado and Oklahoma. In May 2013, Regency Energy Partners LP closed the acquisition of Southern Union Gathering Company, LLC from Southern Union Company. During the year ended December 31, 2012, Lone Star NGL LLC (Lone Star), a newly formed joint venture that is owned 70% by Energy Transfer Partners, L.P. (ETP).