Located in the US state of Wisconsin, the refinery produces gasoline, diesel, asphalt, bunker fuel and specialty petroleum products that are marketed in the Midwest region of the US, including the surrounding border states, and Canada.
The Superior assets include inventories valued at about $220m as of 31 August 2011 and various owned and leased finished product terminals.
Calumet said the Superior assets provide greater scale, geographic diversity and development potential to its refining business.
Calumet is a master limited partnership and is an independent producer of specialty hydrocarbon products in North America.
