CHEYENNE, Wyo. (AP) — Sinclair Oil has agreed to pay a $3.8 million fine for exceeding air pollution limits at two of its refineries in Wyoming.

The Environmental Protection Agency and the U.S. Justice Department announced the fine Monday.

The EPA says Sinclair also agreed to spend about $10.5 million on additional pollution control equipment and other measures at its refineries in Casper and east of Rawlins in the town of Sinclair.

The agency says the refineries exceeded nitrogen oxide and sulfur dioxide emission limits. The limits were part of a 2008 settlement in which Sinclair paid a $2.4 million penalty.

Sinclair Senior Vice President Clint Ensign says the company has been working to resolve the issues.

EPA says the proposed settlement is subject to a 30-day public comment period and final court approval.