Ontario Regulation 419/05 establishes air quality standards based on environmental and human health impacts. Facilities may apply for site-specific alterations to standards where they are unable to achieve regulatory standards within the specified timelines.

The MOE is now proposing to amend O. Reg. 419/05 to approve sector-wide alterations, in place of facility by facility exemptions. Two specific proposals have been posted for comment over the summer months, including a proposal for the Forest Products sector and a proposal for the Foundry sector. If approved, a facility within these sectors would have the option of following the sector specific exemption and the operational practices set out therein, rather than the default criteria and timelines. Details are available at http://www.ebr.gov.on.ca/ERS-WEB-External/displaynoticecontent.do?noticeId=MTA2NTE0&statusId=MTU5ODAy&language=en.