Gainesville’s public utilities department is wrapping up a sewer project that involves abandoning a decades-old line that runs underneath a building. “Back years ago, they didn’t scrutinize permitting ... quite as closely as we do today, and people would put buildings on top of sewer lines,” said Myron Bennett, engineering/construction division manager for the public utilities department. “And obviously, it’s pretty hard for us to maintain a sewer line when ... we have no accessibility to it.”