3,300 gas leaks are found in Boston
Most are small; perspectives differ on risk
Natural gas is escaping from more than 3,300 leaks in Boston’s underground pipelines, according to a new Boston University study that underscores the explosion risk and environmental damage from aging infrastructure under city sidewalks and streets. Most of the leaks are tiny, although six locations had gas levels higher than the threshold at which explosions could occur. The study comes three years after a Gloucester house exploded because of a cracked and corroded gas main dating to 1911.