The Ultra Low Emission Zone (ULEZ) should include the A4 running through Chiswick

The area around the A4 has the highest levels of pollution in the Borough, and frequently exceeds the safe maximum levels of NO2. Both St Mary's and William Hogarth schools back onto the A4, and many people live along side it. In our view, the Council and the Mayor have missed a massive opportunity to reduce pollution for those most at risk in Chiswick, including the children at those schools, by the exclusion of the A4 from the Ultra Low Emission Zone (ULEZ).

Pollution on the A4 requires immediate attention; as admitted in Hounslow Council's own draft Air Quality Action Plan issued in 2017, the A4 has the highest levels of toxic pollution in the Borough. Harmful NO2 concentrations are almost double the legal limit and PM10 levels are just below the limit.

This is a serious issue, as long-term exposure to NO2 impacts respiratory development in children. PM10s are of particular concern as groups with pre-existing lung or heart disease, as well as elderly people and children, are particularly vulnerable to its adverse effects. According to a World Health Organisation report from 2013, "There is no evidence of a safe level of exposure or a threshold below which no adverse health effects occur."

The inclusion of the part of the A4 running through Chiswick in the ULEZ is an opportunity to start to address this issue.

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