Ontario’s Local Air Quality Regulation (O. Reg. 419/05: Air Pollution – Local Air Quality) works within the province’s air management framework by regulating air contaminants released into communities by various sources, including local industrial and commercial facilities. The regulation aims to limit exposure to substances released into air that can affect human health and the environment, while allowing industry to operate responsibly under a set of rules that are publicly transparent. The regulation includes three compliance approaches for industry to demonstrate environmental performance, and make improvements when required. Owens Corning Composite Materials Canada LP has requested the site-specific standard compliance approach for Chromium Compounds (Hexavalent).
This is a notice of a proposal for a site-specific standard approval made under the Local Air Quality Regulation.
The Ministry of the Environment and Climate Change (ministry) received a request dated March 30, 2015 for a site-specific standard for hexavalent chromium from Owens Corning Composite Materials Canada LP under section 32 of the Local Air Quality Regulation for the Guelph Glass Plant site located at 247 York Road, Guelph, Ontario, Canada, N1H 6P6. Sections 32 to 34.1 of the Local Air Quality Regulation set out the process for requesting a site-specific standard. Section 35 of the Local Air Quality Regulation sets out the authority to approve a site-specific standard.
The site-specific standard process considers best available pollution control methods to help reduce exposures to air emissions. This proposal will require Owens Corning Composite Materials Canada LP to meet the site-specific standard by implementing the proposed action plan. It is anticipated that implementation of the action plan will result in an 88 % reduction in the maximum point of impingement concentration of hexavalent chromium.
Chromium Compounds (Hexavalent) (annual average):
As of July 1, 2016, the Chromium Compounds (Hexavalent) air standard in Schedule 3 of the Local Air Quality Regulation is 0.00014 micrograms per cubic metre (annual average). Based on the information provided in the request for the site-specific standard, the ministry recognizes that the current maximum level of hexavalent chromium at Owens Corning Composite Materials Canada LP Guelph Glass Plant is up to 0.0208 micrograms per cubic metre (annual average). A review of the request has determined that it is feasible for Owens Corning Composite Materials Canada LP to achieve a maximum of 0.0024 micrograms per cubic metre (annual average) for hexavalent chromium after implementation of their action plan.
It is proposed that this site-specific standard expire after ten years. (i.e., the Chromium Compounds (Hexavalent) site-specific standard be from July 1, 2016 to June 30, 2026). For this facility, all significant changes to reduce hexavalent chromium emissions are proposed to be made in 2016 at the start of the action plan. This is because, after those changes, the new glass-melting furnace and channels that contain the hot flowing glass are proposed to run at a continuous steady state for the next ten years before needing to be rebuilt with whatever best technology is available at that future date.
As a result, it is proposed that a site-specific standard for Chromium Compounds (Hexavalent) be set as follows: 0.0024 micrograms per cubic metre (annual average) from July 1, 2016 to June 30, 2026.
The proposed site-specific approval requires the company to provide the ministry an annual written summary of the status of their Action Plan before the expiry of the approval.
The public has been made aware of the information provided in the request made by Owens Corning Composite Materials Canada LP. As required by the Local Air Quality Regulation, the company has consulted directly with the public through the hosting of a public meeting held on March 5, 2015. Owens Corning Composite Materials Canada LP also set-up a webpage which provides all information presented at the public meetings, as well as the documents submitted as part of their application. They also created a dedicated toll-free number and e-mail address for contacting the company with questions or further information.