Sunoco Logistics Partners L.P. (NYSE: SXL) today announced that it will commence a binding Open Season for its Mariner South Pipeline, a pipeline that will transport export grade propane and butane, from Lone Star NGL LLC’s storage and fractionation complex in Mont Belvieu, Texas to Sunoco Logistics’ terminal in Nederland, Texas. In addition to export grade propane and butane, the pipeline will be available for other natural gas liquids and petroleum products depending on shipper interest. The pipeline is anticipated to have an initial capacity to transport approximately 200,000 barrels per day and can be scaled to support higher volumes as needed. The pipeline is expected to be operational by the first quarter of 2015. The Open Season will commence on March 21, 2013. Subject to the terms of the Open Season, priority service will be available to shippers making long-term volume commitments during the Open Season. The Notice of Open Season will be available on the Sunoco Logistics website at www.sunocologistics.com/marinersouth. More information about this Open Season is available by contacting: Hank AlexanderVice President, Business DevelopmentSunoco Logistics Partners, L.P.1818 Market Street, Suite 1500Philadelphia, PA 19103215-246-8568 firstname.lastname@example.org Sunoco Logistics Partners L.P. (NYSE: SXL), headquartered in Philadelphia, is a master limited partnership that owns and operates a logistics business consisting of a geographically diverse portfolio of complementary crude oil & refined product pipeline, terminalling, and acquisition & marketing assets. SXL’s general partner is owned by Energy Transfer Partners, L.P. (NYSE: ETP). Lone Star NGL LLC (Lone Star), a joint venture between Energy Transfer Partners, L.P. ( NYSE:ETP) and Regency Energy Partners LP (NYSE:RGP), owns and operates natural gas liquids storage, fractionation, and transportation assets in Texas, Louisiana, and Mississippi. Lone Star's assets include approximately 2,000 miles of natural gas liquids pipelines and 47 million barrels of storage capacity at Mont Belvieu, Texas. Energy Transfer Equity, L.P. ( NYSE:ETE) owns the general partner of both ETP and RGP.