PAA Natural Gas Storage, L.P. is engaged in the business of acquisition, development, ownership, operation and commercial management of natural gas storage facilities. As of December 31, 2012, the Company owned and operated three natural gas storage facilities located in Louisiana, Mississippi and Michigan. The Company also leases storage capacity and pipelines transportation capacity from third parties. The Company provides natural gas storage services to a mix of customers, including local gas distribution company�s liquefied natural gas (LNG), electric utilities, pipelines, direct industrial users, electric power generators, marketers, producers, LNG exporters and affiliates of such entities. In December 31, 2013, Plains All American Pipeline, L.P. (Plains) completed the merger of PAA Natural Gas Storage, L.P with a wholly owned subsidiary of Plains, with Plains surviving the merger as a wholly owned subsidiary of PAA.