Boardwalk Pipeline Partners, LP is a limited partnership company. The Company's business is conducted by its primary subsidiary, Boardwalk Pipelines, LP (Boardwalk Pipelines) and its subsidiaries Gulf Crossing Pipeline Company LLC, Gulf South Pipeline Company, LP, Texas Gas Transmission, LLC, Boardwalk Field Services, LLC, Petal Gas Storage, L.L.C, Boardwalk Louisiana Midstream, LLC and Boardwalk Storage Company, LLC. The Company's business includes integrated natural gas and natural gas liquids (NGLs) pipeline and storage systems and natural gas gathering and processing. The Company's pipeline systems originate in the Gulf Coast region, Oklahoma and Arkansas and extend north and east to the Midwestern states of Tennessee, Kentucky, Illinois, Indiana and Ohio. It serves a mix of customers, including producers of natural gas, local distribution companies (LDCs), marketers, electric power generators, industrial users, and interstate and intrastate pipelines.