Members of the Saint John Fire Department continued to respond to an ammonia leak outside the TD Station on Wednesday . The City of Saint John said crews were conducting air monitoring and are working to mitigate the leak in the afternoon. An isolation zone was set up. “The public is asked to avoid the area around TD Station at this time to allow emergency crews to work safely,” a news release from the city reads. At 7:40 p.m., the city said crews were still working to mitigate the leak. The isolation zone has been reduced to 20 metres around the west side of the building. According to the Government of Canada’s website, ammonia’s main routes of exposure are inhalation, skin contact and eye contact. For more New Brunswick news, visit our dedicated provincial page.