The April wall collapse at a Gatlinburg, Tenn., wastewater treatment plant that killed two workers was caused by deficient construction that allowed gradual corrosion of the rebar inside it, a state safety report said.
The report, written by Mahammad Ayub, director of the federal Occupational Safety and Health Administration office of engineering, and Mary Misciagna, Tennessee Occupational Safety and Health safety supervisor, did not find workplace safety violations, so the state is not issuing citations against the city of Gatlinburg, the plant owner or its operator, Veolia Water North America.