On April 4, 2011, U.S. EPA signed an Administrative Consent Order (ACO) with Prairie Power Inc. (PPI) in Pearl, Illinois. PPI owns and operates one 22 megawatt coal-fired boiler at its facility in Pearl, Illinois. The ACO requires PPI to either retire its boiler by December 31, 2013, or repower to biomass fuels by December 31, 2014. In the interim, whether PPI elects to permanently retire Unit 1 or convert Unit 1 to combust 100% biomass fuels, until Unit 1 is retired or repowered and operating on 100% biomass, Unit 1 will not exceed an annual NOx tonnage limit of 350 tons per year and an annual SO2 tonnage limit of 1,500 tons per year as determined on a 12-month rolling average basis. This is a 2500 ton per year (TPY) SO2 emission reduction from 2008 levels and a 550 TPY NOx emission reduction from 2008 levels. Additionally, PPI will enter into a binding Power Purchase Agreement for at least 20 MW of electric generating capacity of wind in Illinois over an 18 year period.