For the purpose of odor control, new truss supported extruded aluminum flat covers have been installed at the four primary clarifiers, approximately 134 feet in diameter. Associated improvements include buried foul air duct, two new carbon scrubbers and a new 3,190 SF Fan Building to enclose odor control equipment.  Other facility improvements include Secondary Effluent Piping Reconfiguration, Primary Skimmings Improvements, additional parking facilities, and a new landscaped courtyard.