Additional steps are being undertaken to reduce the strong odors emanating from the Bridgeton Landfill. Owners of the landfill, Republic Services, say they are adding 7 acres of tarp to control the smell which has been so bad that Missouri Attorney General Chris Koster has filed suit on behalf of residents. Gas extraction pumps have also been installed to reduce the odor. Despite some improvement, there are still days when the smell is overwhelming. The Missouri Department of Natural Resources says more short-term odors may be generated as gas extraction wells are prepared for the installation of the liner.