Enerplus Corporation

Enerplus Corporation (Enerplus), formerly Enerplus Resources Fund, has oil and natural gas property interests are located in western Canada in the provinces of Alberta, British Columbia, Saskatchewan and Manitoba, and in the United States in the states of Montana, North Dakota, Maryland, Pennsylvania, West Virginia, Wyoming and Utah. Enerplus' properties have related field production facilities and infrastructure to accommodate Enerplus' production. During the year ended December 31, 2010, production volumes from Enerplus' properties consisted of approximately 42% crude oil and natural gas liquids (NGLs) and 58% natural gas, on a barrel of oil equivalent basis. During 2010, Enerplus' average daily production was consisted of 31,135 barrels/day of crude oil, 3,889 barrels /day of NGLs and 288.7 million cubic feet /day of natural gas.