Cheyenne Refinery

Summary Information Ownership: HollyFrontier Website: http://hollyfrontier.com/ Location: Cheyenne, Wyoming, USA Capacity: 2.6 million tons/annum & 52,000 bbl/day Nelson Complexity: Refining Depth: Brief Description A small complex refinery Refining Units Atmospheric Distillation Vacuum Distillation - 28,000 Delayed Coker - 14,500 Fluidised Catalytic Cracker - 12,000 Catalytic Reformer - 9,000 Desulphurisation Naphtha - 10,000 Gasoline - 10,000 Diesel - 17,500 Terminal Capacity Crude Oil: Refined Products: Crude Supply Crude oil is purchased from local producers and is also imported via the Express Oil Pipeline System from Canada In the year ended December 31, 2010, the refinery obtained approximately 42% of the Cheyenne Refinery’s crude oil charge from Canada, 39% Bakken crude oil from North Dakota and Montana, 13% from Wyoming, 3% from Colorado and 3% from other domestic sources Products Produced LPG, Gasoline, Diesel, Coke Ongoing Projects - Other Information - History 2006 - ENGlobal completed ultra low sulfur diesel project 2009 - Frontier Refining and Frontier El Dorado Refining (Frontier) have agreed to pay a civil penalty of $1.23 million and spend approximately $127 million in pollution control upgrades for alleged emissions violations at its refineries in Cheyenne, Wyo. and El Dorado, Kan Relevant Links Map of Operations, HollyFrontier Refinery Webpage Wyoming Refining Clean Air Act Settlement Holly Corporation and Frontier Oil Corporation Announce Merger of Equals ENGlobal Awarded $7 Million Contract from Frontier Refining Inc.