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Best Practices

Ongoing monitoring and management of a site may be required as part of a Certificate of Property Use (CPU), to ensure there is no recontamination after excavation or in-situ remediation, or as an interim measure. The District Office of the Ontario Ministry of the Environment (at the discretion of the Director) can provide Risk Protection for a property and the community by requiring that the owner provide financial assurance when a Risk Management Measure (RMM) is required or imposed. RMMs generally associated with maintaining "active" measures such as active ventilation, effluent treatment systems or on-going monitoring programs. Municipalities may wish to identify sites that have RMMs and CPUs imposed by the Province.

Municipalities should consider developing and maintaining a process for information sharing and data management regarding work that has been conducted on contaminated sites. This resource could be available as an internal database to provide information such as site work carried out by municipal departments, environmental assessments, potential concerns related to the COCs, Risk Management Measures (RMMs) and Certificate of Property Use (CPU). This is a measure that has been successfully used by the City of Hamilton where they have developed a process to share information internally regarding work conducted on contaminated properties.

Municipalities, working in conjunction with developers and the Province, should implement and use a system to search and track RMM requirements.

• Part of the due diligence on a site should be to obtain existing CPU and identify any RMM requirements.
• CPU requirements need to be communicated to owners, tenants, and anyone else using the property to help ensure they are being met. Plan or prepare for possible public consultation if posted on the EBR.

For information on site management and monitoring, please consult the Brownfields Toolbox.

Best Practices

Develop and maintain a process for information sharing and management related to site work conducted on contaminated properties Develop and maintain a database of all active and decommissioned service stations Incorporate information regarding RMMs and CPUs for redeveloped service stations into the municipal data management system Undertake due diligence to ensure that the site is being managed regarding the RMMs and CPUs that have been imposed on service stations.

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