After extensive public participation and comprehensive technical evaluation, the Kansas Department of Health and Environment (KDHE) and U.S. Environmental Protection Agency Region 7 (EPA) have agreed to renew the Hazardous Waste Permit for Ash Grove Cement Company in Chanute, Kan, according to the US Fed News. Ash Grove began burning hazardous waste as fuel in 1988 and built a new kiln system in 2000. The new kiln system allowed cement production to triple without any significant change in the usage of hazardous waste fuels.