KINGSPORT, Tennessee — Domtar’s Kingsport mill received a long-awaited permit last week leading to the start of the anaerobic digester project. The Tennessee Department of Environment and Conservation issued the 142-page permit Wednesday. …“Receiving this permit is an important milestone in our efforts to advance the anaerobic digester project at the Kingsport Mill,” Charlie Floyd, VP of strategic capital projects, said. “This investment underscores Domtar’s commitment to sustainable innovation and environmental stewardship, while supporting good jobs and economic vitality here in Kingsport.” …Start-up of the new wastewater treatment system is expected by the third or fourth quarter of 2026, according to Domtar’s latest timeline. Around 150 contractors are expected to be on site to build the digester and associated equipment, Floyd said. Domtar estimates a $12.8 million economic impact from the project — including labor, hotel and dining within the community.