Prior to initiating this action, the City of Red Wing installed and began to operate a front end fuel cleaning facility (FEFCF) which separates non-combustible materials from the solid waste stream before it goes into the municipal waste combustor at the Red Wing Solid Waste Boiler Facility (Red Wing SWBF). In the Administrative Compliance Order, the City of Red Wing agreed to operate the FEFCF for 1 year. The case team assumes that the City of Red Wing will continue to operate the FEFCF for many years beyond the 1 year required by the order. Because the Red Wing SWBF has not yet conducted performance test with the FEFCF operating we do not know the extent to which removing non-combustible materials will reduce the emissions of dioxin/furan, particulate matter, lead, cadmium, and mercury. The Red Wing SWBF is not required to conduct performance tests for dioxin/furan, particulate matter, lead, cadmium, and mercury until 2012.