Montreal Gazette

REM’s builders must do more to protect children

Noise and air pollution from building Édouard-Montpetit station poses health risks, Mark S. Goldberg says.

- Mark S. Goldberg, PhD, is a professor in the Department of Medicine, McGill University and has for 25 years studied the health effects associated with short- and long-term exposure to air pollution.

The new REM light-rail system is Montreal’s most important public transit undertakin­g since the city’s métro was built more than a half century ago, with the potential to reduce traffic and emissions. And yet, constructi­on of the REM station at Édouard-Montpetit does not seem to have been planned with the health of the public in mind. Located in an Outremont neighbourh­ood, right beside an elementary school and the Université de Montréal, the three-to-four-year project at Édouard-Montpetit will involve dynamiting and excavating a 20-storey elevator shaft and undergroun­d caverns, to create North America’s second-deepest métro stop. Essentiall­y, it’s a mining project in a residentia­l area. Despite the obvious complexiti­es of such a project, the REM was not required to do an environmen­tal-risk assessment study of the Édouard-Montpetit site before beginning constructi­on. As a result, with children in such close proximity, we are looking at a public-health issue that needs to be addressed. Children are not small adults — they are much more vulnerable, as their bodies are still developing. In terms of air pollution, they breathe faster than adults, meaning they inhale more pollutants. They are also lower to the ground, where pollutants can reach peak concentrat­ions. For children, the potential adverse effects are many, including stunted lung and cognitive developmen­t, and possibly cancer. Noise is equally troubling, and in children can interfere with speech, language acquisitio­n, learning and concentrat­ion. It can increase blood pressure and at high levels cause hearing loss. The REM has built an acoustic wall around the site, but it only protects students on the school’s first floor — in some second-floor classrooms, kids are wearing noise-reduction headsets. The REM claims to comply with Quebec’s daily norms for noise and air pollution, but being within these norms does not mean that the exposures are “safe.” The World Health Organizati­on recently classified air pollution as an “overlooked health emergency” for children, and in fact there is no threshold below which no adverse health effects can occur. Moreover, our Quebec norms were establishe­d without considerin­g vulnerable people, such as children. Thus, meeting provincial regulation­s is no guarantee for protecting the children’s health, especially over a three-to-four-year project. With all these potential hazards, and given that the project is already underway, what can be done? Here are six recommenda­tions: 1. Systematic­ally test the rock down to the full 70 metres of excavation, to ensure it contains no radioactiv­e materials or lead. 2. Raise the site’s acoustic wall to protect children on the school’s second floor. This should be easy for an organizati­on that is building one of North America’s most complicate­d subway stations. 3. Routinely measure the noise and air in and around the school, throughout the project. Monitoring is not expensive and could prevent a host of health problems. 4. Set up an oversight committee of environmen­tal health experts, community members and school representa­tives. All pollution data can then be scrutinize­d, and measures can be proposed if levels become unacceptab­le. 5. Make sure the community is aware of emergency measures in the event of an incident, for instance gas leaks or damage to the métro. 6. Bring in extra crossing guards. Children are unpredicta­ble, and with two large trucks per hour, less space on the road and changes in bike lanes and crosswalks, the results could be tragic. The REM light-rail system is a massive project with a multi-billion-dollar budget. The costs of the above measures are trivial compared to the overall cost of the project, but they could make the difference between a successful venture and a toxic one.

Children are not small adults — they are much more vulnerable, as their bodies are still developing.

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