2nd C-O Leak Came From Old Hotel, Mayor Reports ONEONTA – The carbon monoxide leak at 189 Main St. that drove employees from their offices and sent six people from the hospital came from the boiler in the basement of the former Oneonta Hotel, Mayor Gary Herzig reported this afternoon. “My understanding is that the hot water boiler was venting carbon monoxide,” said Herzig. “It was getting into the ventilation system for 189 Main.” On Friday, a malfunction in the…