A risk assessment for contaminated land is typically required during the development process in Toronto when there is a suspicion or known presence of hazardous substances on the site. This assessment is crucial to ensure the safety of workers, future occupants, and the environment. It helps identify potential risks, determine the extent of contamination, and develop appropriate remediation measures to mitigate those risks.

In Toronto, a risk assessment for contaminated land is often required by regulatory authorities such as the Ministry of the Environment, Conservation and Parks (MECP) or the local municipality before any construction or development activities can proceed. This is to comply with environmental regulations and ensure that the site is safe for redevelopment.

It is important to conduct a risk assessment early in the development process to avoid any delays or unexpected costs later on. By identifying and addressing contamination issues upfront, developers can better plan and budget for remediation measures, ensuring that the project stays on track and meets regulatory requirements.

Overall, a risk assessment for contaminated land is essential in Toronto to protect public health, the environment, and to ensure the successful and safe development of properties in the city.