NuStar Energy L.P. (NuStar Energy) is engaged in the terminalling and storage of petroleum products, the transportation of petroleum products and anhydrous ammonia and asphalt and fuels marketing. The Company operates in three segments: storage, transportation, and asphalt and fuels marketing. The Company operates through its wholly owned subsidiaries, NuStar Logistics, L.P. (NuStar Logistics) and NuStar Pipeline Operating Partnership L.P. (NuPOP). It earns revenues mainly include tariffs for transporting crude oil, refined products and anhydrous ammonia through its pipelines; fees for the use of is terminals and crude oil storage tanks and related ancillary services, and sales of asphalt and other refined petroleum products. On March 20, 2008, the Company acquired CITGO Asphalt Refining Company’s asphalt operations and assets (the East Coast Asphalt Operations).