The Anderson County Commission held a workshop this week to discuss the Department of Energy’s proposed construction and operation of a new hazardous waste disposal facility on the federal reservation in Oak Ridge which also could effect Roane County. During the meeting, state environmental officials outlined some of their concerns about the project, which the Tennessee Department of Environment and Conservation has not yet approved. Federal officials who attended the meeting said that the proposed landfill would hold debris and soil from the demolition of aging buildings at Y-12 and the Oak Ridge National Laboratory, described as “low-level” radioactive waste. The most heavily contaminated materials will still be shipped to off-site disposal facilities. State concerns include groundwater and rainfall and their effects on the environment as well as mercury residue that has long been a concern in and around the federal facilities in Oak Ridge. State officials also listed a lack of a risk assessment from the DOE among their concerns.