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Pre-Notification of Updates to Ontario’s Air Dispersion Models

     Posted by LEHDER News on

On Monday October 2, 2017,  the MOECC issued the pre-notification for updates to the air dispersion models utilized for Ontario Regulatio 419/05: Air Pollution - Local Air Quality.  The pre-notification details are provided below but can also be found at https://www.ontario.ca/page/pre-notification-updates-ontarios-air-dispersion-models

Ontario will be adopting new air dispersion models that are based on latest available science, to provide clarity and consistency to the regulated community and stakeholders.

Ontario’s local air quality regulation (O. Reg. 419/05: Air Pollution – Local Air Quality) under the Environmental Protection Act is part of the province’s air management framework. It regulates air contaminants released into communities by various sources, including local industrial and commercial facilities.

The regulation includes three compliance approaches for industry to demonstrate environmental performance and make improvements when required. Industry can:

  • meet the air standard
  • request and meet a site-specific standard,
  • or register and meet the requirements under a sector-based technical standard (if available).

Most Ontario facilities are regulated by the air standards compliance approach (i.e., meet the air standard), although all three approaches are allowable under the regulation. Models are part of the air standards and site-specific standards compliance approaches. Section 6 of O. Reg. 419/05 provides a list of approved dispersion models for use in assessing compliance with air standards or site-specific standards under the regulation. Currently, the approved dispersion models include:

1. The AERMOD dispersion model (version 14314) and AERMET meteorological preprocessor (version 14314) available from the Ministry of the Environment and Climate Change (MOECC) website.

2. The ASHRAE method of calculation. Section 1(1) of O. Reg. 419/05 defines the “ASHRAE method of calculation” to mean the method of calculation described in Chapter 44 (Building Air Intake and Exhaust Design) of the 2015 ASHRAE Handbook — HVAC Applications, published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers.

3. The SCREEN3 dispersion model on the USEPA’s website, or available from the MOECC.

4. The method of calculation required by the Appendix to Regulation 346, if section 19 of O. Reg. 419/05 applies to the discharges.

In addition, section 13 of O. Reg. 419/05 references regional surface and upper air meteorological data for use with AERMOD that must be processed by the AERMET computer program.

Under subsection 177 (6) of the Environmental Protection Act, the adoption of an amendment to a document that has been incorporated by reference (e.g. AERMOD/AERMET/ASHRAE), comes into effect once the MOECC publishes a notice of the amendment in either The Ontario Gazette or the Environmental Registry under the Environmental Bill of Rights (EBR), 1993.

Accordingly, in April 2018 the MOECC will be posting an Information Notice on the Environmental Registry to replace current regulatory air dispersion models under O. Reg. 419/05 with the following updated model versions:

  • AERMOD dispersion model
    • Will be updated to AERMOD version 16216r (version date December 20, 2016)
  • AERMET meteorological pre-processor
    • Will be updated to AERMET version 16216 (version date December 20, 2016), and
  • ASHRAE method of calculation
    • Will be updated to Chapter 45 (Building Air Intake and Exhaust Design) of the 2015 ASHRAE Handbook – HVAC Applications

The ministry will make the approved dispersion models available through the Ministry of the Environment and Climate Change (MOECC) website.

Ontario Regional Meteorological data sets that have been reprocessed with AERMET 16216 (version date December 20, 2016) will also be available at the above noted website link once the Information Notice is posted on the Environmental Registry (under EBR). Until that time, proponents may request copies of the re-processed meteorological datasets from the Environmental Monitoring and Reporting Branch at MetDataENE@ontario.ca.

Because air dispersion models will continue to evolve in the future, MOECC developed an implementation plan for model version updates, with input from stakeholders, which provides clarity. Key elements of this annual process include the following:

  • Monitoring and assessing regulatory model update developments on an ongoing basis and discussing with stakeholders, as required.
  • Notifying stakeholders, every year, six months in advance of formally adopting updated versions of the models. This will give facilities time to determine if they will be affected by model updates and if so, to contact their local district office for assistance in developing a path forward, as needed.
  • Posting an Information Notice on the Environmental Registry (EBR) six months following pre-notification to formally adopt the updated model versions. We will adopt updated model versions annually as necessary.
  • Updating regulatory data files/instruments, and guidance materials to reflect the adoption of updated model versions, as necessary.

Additional information may also be obtained from:

Ontario Ministry of the Environment and Climate Change
Air Quality Monitoring and Transboundary Air Sciences Section
Environmental Monitoring and Reporting Branch
125 Resources Road, Toronto, ON M9P 3V6
E-mail: MetDataENE@ontario.ca
General Inquiries: 416-235-6171

For more information, please contact Penny McInnis.

Environmental Registry Decision on Updated Guidelines for the Local Air Quality Regulation (O. Regulation 419/05: Air Pollution – Local Air Quality)

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On March 8, 2017, updated guidance documents for Local Air Quality Regulation (O. Regulation 419/05: Air Pollution – Local Air Quality) were posted to the Environmental Registry. 

The Ontario Ministry of the Environment and Climate Change has updated guidance on technical requirements that support the ministry’s risk framework for air standards, site-specific standard, technical standards and Upper Risk Thresholds (URTs) under the Local Air Quality Regulation (O. Regulation 419/05: Air Pollution – Local Air Quality) made under the Environmental Protection Act. The web links and documents for the updated documents are provided below:

Guideline for the Implementation of Air Standards in Ontario (Guideline A-12)

Guideline for the Implementation of Air Standards in Ontario (GIASO) Guideline for the Implementation of Air Standards in Ontario (GIASO) (3619 KB)

Guide to Requesting a Site-Specific Standard

Guide to Requesting a Site-specific Standard Guide to Requesting a Site-specific Standard (1552 KB)

Guide to Applying for Registration to the Technical Standards Registry – Air Pollution


The full EBR post can be viewed here:

https://www.ebr.gov.on.ca/ERS-WEB-External/displaynoticecontent.do?noticeId=MTI1MDMz&statusId=MTk0OTI0&language=en

For more information on these guidance documents, please contact Marnie Freer.

MOECC Update on AERMOD/AERMET or ASHRAE Air Dispersion Models for Ontario Regulation 419/05

     Posted by LEHDER News on

MOECC Update on O.Reg. 419/05 Air Dispersion ModelsOn November 23, 2016, the MOECC posted an update in regards to the AERMOD/AERMET or ASHRAE air dispersion models; the Ministry will not be adopting updated versions of the AERMOD/AERMET or ASHRAE air dispersion models in April 2017.  Accordingly, the approved versions of these models under O.Reg. 419/05 adopted on November 2, 2015 will remain unchanged. 


An excerpt providing a summary from the November 2, 2015 EBR Registry Number 012-5177 notice follows.

Air dispersion models are mathematical tools used to assess point of impingement concentrations that are then compared to ministry air standards and guidelines. A point of impingement is the point at which a contaminant contacts the ground or a building.

This notice is to inform the regulated community and the public that the MOECC is adopting updated approved air dispersion models under O.Reg. 419/05. Adoption of the updated models will take effect upon publishing of this notice.


Section 6 of O.Reg.419/05 provides a list of approved dispersion models for use in assessing compliance with air standards or site-specific standards under the regulation, including the AERMOD dispersion model and the ASHRAE method of calculation. Section 13(1) of O.Reg.419/05 approves the use of meteorological data processed by the AERMET computer program with the AERMOD dispersion model.

The previously adopted versions of these models were:

  • The US EPA AERMOD dispersion model (version 07026) used in conjunction with the AERMET meteorological preprocessor (version 06341).
  • The method of calculation for same structure contamination described in Chapter 44 (Building Air Intake and Exhaust Design) of the 2007 ASHRAE Handbook — HVAC Applications, published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).

The MOECC has now replaced the previously approved versions of these models under O. Reg. 419/05 (listed above) with the following updated model versions:

  • AERMOD dispersion model version 14134 (version date May 14, 2014) used in conjunction with AERMET meteorological pre-processor version 14134 (version date May 14, 2014), and
  • ASHRAE method of calculation described in Chapter 45 (Building Air Intake and Exhaust Design) of the 2011 ASHRAE Handbook – HVAC Applications.

The approved dispersion models and Ontario Regional Meteorological data sets that have been reprocessed with AERMET 14134 (version date May 14, 2014) are available through the Ontario government website (MOECC Website on Local Air Quality). 


For more information please refer to EBR Registry Number 012-5177.  To determine what impact this may have on your facility, please contact Penny McInnis.

Recent EBR Posts of Importance - GHG, Air Zone Delineation and O. Reg. 419/05 Technical Standards

     Posted by LEHDER News on

Recent EBR Posts for GHG and O. Reg 419Several recent updates to the Ontario Environmental Registry have been posted, including proposals with active comment periods and some major decisions.

The proposals recently posted regarding Greenhouse Gas (GHG) include the Climate Change Mitigation and Low-Carbon Economy Act, 2016 and Cap and Trade Regulatory Proposal and Revised Guideline for Greenhouse Gas Emissions Reporting.  The MOECC has also posted the final policy decision notice for the Delineation of ON Air Zones on March 9, 2016.

Proposals and final policy decisions for O. Reg. 419/05 Technical Standards for various industrial sectors were also posted on March 9, 2016, including:

Overviews of all recent postings, including applicable links, are outlined below.

Climate Change Mitigation and Low-Carbon Economy Act, 2016 

Ontario is proposing to implement the Climate Change Mitigation and Low-Carbon Economy Act, 2016 (Bill).  The purpose of this Act is to:

(a) to reduce greenhouse gas in order to respond to climate change, to protect the environment and to assist Ontarians to transition to a low-carbon economy; and

(b) to enable Ontario to collaborate and coordinate its actions with similar actions in other jurisdictions in order to ensure the efficacy of its regulatory scheme in the context of a broader international effort to respond to climate change.

The Bill outlines provisions under two main areas:

1. Emissions reduction targets and action plans, and

2. The cap and trade program and use of proceeds.

The proposed Bill was posted to the EBR on February 24, 2016 and the comment period is open until March 25, 2016. The full EBR post, including comment submission information, can be viewed below.  Also provided is a link to the draft Bill.

EBR Registry Number 012-6844

Bill 172, Climate Change Mitigation and Low-Carbon Economy Act, 2016 (Draft)

Cap and Trade Regulatory Proposal and Revised Guideline for Greenhouse Gas Emissions Reporting

Ontario is proposing to implement a greenhouse gas cap and trade program. A cap and trade program effectively reduces the amount of greenhouse gas pollution going into our atmosphere by setting a limit on emissions, rewarding innovative companies, providing certainty for industries, and creating more opportunities for investment.

The Ministry is now posting:

1. A regulatory proposal for a cap and trade regulation, which includes an appendix presenting detailed technical information for the distribution of allowances to eligible capped emitters for the first compliance period, details related to early reduction credits, and an overview of complementary amendments for the reporting regulation and incorporated guideline to support implementation of the cap and trade program. Following the 45 day consultation period, comments received will be considered and the content of this document, including the grey shaded boxes in the draft regulation, will be revised accordingly and integrated into the final cap and trade regulation.

2. A revised Guideline for Greenhouse Gas Emissions Reporting. 

The proposal has been posted for a 45 day public review and comment period starting February 25, 2016, with comments due by April 10, 2016.  Please find links to the EBR posting and applicable documents below.

EBR Registry Number 012-6837

Draft Cap and Trade Regulation (PDF download)

Revised Guideline for Greenhouse Gas Emissions Reporting (PDF download)


Delineation of ON Air Zones

Ontario is implementing the Air Quality Management System (the System) a flexible cross-Canada framework developed through the Canadian Council of Ministers of the Environment. The System is a comprehensive approach consisting of an interconnected set of drivers and mechanisms to achieve continuous improvements to overall air quality using an all sources approach.

Under the System, provinces and territories may delineate and manage air zones in a manner best suited to the environmental conditions and regional/local circumstances.

Ontario has finalized its decision to delineate its air zones consistent with the policy proposal posted for public consultation in June 2015.

Air Zone 1 - Areas with limited pollution from either point or non-point sources or transboundary influence; where air quality management activities are focused on maintaining good air quality.

Air Zone 2 - Areas under pressure from multiple sources including some or all of the following: non-point sources, smaller point sources, individual large industrial point sources, transboundary influences; where air quality management activities are focused on multiple broad-based initiatives targeting many sources.

Air Zone 3 - Areas with a concentration of large industrial sources; where air quality management activities are focused on the abatement of local industrial emissions as well as non-industrial sources.

The EBR policy decision was posted on March 9, 2016.  Links to the post as well as information pertaining to this decision follow.

EBR Registry Number 012-4347

Description and Map of Air Zones (PDF download)


O. Reg. 419/05 Technical Standards

Several proposals and policy decisions regarding several industry specific under the Local Air Quality Regulation, O. Reg. 419/05 were posted to the EBR on March 9, 2016.

The primary objectives of a technical standard, under Ontario’s Local Air Quality Regulation, is to include requirements for the implementation of best available air pollution control. This will lead to modernization of operations and minimizing air pollution. In practical terms, a technical standard provides a prescriptive set of air pollution control requirements that focus on key contributors to off-site concentrations of priority air toxics.  Details on the proposals and policy decisions posted on March 9, 2016, follow.

Petroleum Refining

This proposal is to develop a Technical Standard under the local air quality regulation for the petroleum refining industry.  A full summary of the proposed requirements can be viewed in the EBR post; links to additional information are also included below.  A 90 day comment period is open until June 7, 2016, on this proposal.

EBR Registry Number 012-6857

Draft Rationale Report for Petroleum Refining Sector (PDF download)

Draft Petroleum Refining - Industry Standard (PDF download)

Petrochemical

This proposal is to develop a Technical Standard under the local air quality regulation for the petrochemical industry sector.  A full summary of the proposed requirements can be viewed in the EBR post; links to additional information are also included below.  A 90 day comment period is open until June 7, 2016, on this proposal.

EBR Registry Number 012-6859

Draft Rationale Report for Petrochemical Sector (PDF download)

Draft Petrochemical - Industry Standard (PDF download)

Foundries

The MOECC has amended the existing Foundries – Industry Standard (FIS), which is contained in the ministry’s “Technical Standard Publication” (see EBR # 010 -6588) and was published in 2009. A technical standard is a technology-based compliance approach designed for two or more facilities in a sector that are not able to meet one or more air standards due to technical or economic limitations.

Since 2009, the sector, as represented by the Canadian Foundry Association, requested an update of this technical standard to include additional contaminants. The 2009 version of the FIS allowed for registration of up to 111 contaminants, whereas this amendment now includes an additional 195 contaminants, totaling 306 contaminants available for registration. The registration of all of a foundry’s contaminants could eliminate the need for an annual Emission Summary and Dispersion Modelling (ESDM) report thereby reducing the regulatory burden for these small to medium sized enterprises (SMEs). Provisions in the technical standards will ensure that environmental performance in managing the releases of these contaminants is maintained.

EBR Registry Number 012-3538

Rationale Report - Foundries Industry Standard (Amendments) (PDF download)

Metal Finishers

In 2011, the Canadian Association for Surface Finishing (CASF) approached the MOECC with a request to develop a proposed Technical Standard under the Local Air Quality Regulation (O. Reg. 419/05) for chromium compounds (hexavalent forms) and nickel and nickel compounds. Air standards for both of these contaminants will come into effect July 2016.  

As a result of the consultation of this proposal, there are 2 significant additions to the Metal Finishers - Industry Standard:

Multi-tenant Buildings:

Facilities that operate in multi-tenant buildings will now have the option to use both a fume suppressant or wetting agent and an air pollution control device with local exhaust ventilation to minimize emissions or to replace make-up air filters, as per the original proposal.

Maintaining Negative Building Pressure:

Maintaining a negative pressure in key areas of the building will minimize fugitive emissions and improve the capture efficiency of the fume hoods so as to improve the control of emissions from processes in the building. The original proposal required facilities to maintain a negative pressure in the metal finishing tank areas and to assess this by maintaining a table of air flows entering and exiting the facility or area. Any facility will now have the option to either maintain a table of these air flows or to measure building pressure differential in 30 minute block averages. If the building pressure differential over a 30 minute block average is positive, facilities must make operational adjustments to self-correct. If there is a second measurement of a 30 minute block average showing positive pressure in the same day, this would be considered non-compliance and the facility is required to notify the ministry at the end of the calendar day of all the positive 30 minute block averages of the calendar day.

A summary of the policy decision as well as applicable documents can be viewed using the links below.

EBR Registry Number 012-3610

Rationale Report - Metal Finishers - Industry Standard (PDF download)


For more information in regards to the above policy proposals and decision or O. Reg. 419/05 information, please contact Marnie Freer.

MOECC Adopts Updated Air Dispersion Models for Ontario Regulation 419/05

     Posted by LEHDER News on

MOECC Air Dispersion Model UpdatesOn November 2, 2015, the MOECC published the notification of the adoption of updated approved air dispersion models under O.Reg.419/05 to the EBR (Registry # 012-5177).  The use of these updated air dispersion models is effective immediately.

The MOECC has replaced existing approved modeling versions under O. Reg. 419/05 as follows:

1.    AERMOD dispersion model version 14134 (version date May 14, 2014) used in conjunction with AERMET meteorological pre-processor version 14134 (version date May 14, 2014)

REPLACES - AERMOD dispersion model (version 07026) used in conjunction with the AERMET meteorological preprocessor (version 06341).

2.    ASHRAE method of calculation described in Chapter 45 (Building Air Intake and Exhaust Design) of the 2011 ASHRAE Handbook – HVAC Applications.

REPLACES  - the method of calculation for same structure contamination described in Chapter 44 (Building Air Intake and Exhaust Design) of the 2007 ASHRAE Handbook — HVAC Applications, published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).

To view the full EBR posting of these updates, please click here.

For more information on how these updates may impact your facility, please contact Penny McInnis.

New Air Dispersion Model Versions

     Posted by LEHDER News on

LEHDER Air Modeling ServicesThe MOECC has announced they will be adopting new updated versions of several regulatory air dispersion models shortly.  These models have been updated by the USEPA based on the latest available science.  The MOECC announcement to formally adopt new model versions was intended to provide clarity and consistency to the regulated community and stakeholders.  The mandatory use of the new versions of AERMOD, AERMET and ASHRAE models will become effective as of the date the MOECC posts an Information Notice on the EBR.  Based on the MOECC announcement, the posting of the Notice is expected in October 2015 which is  only a few months from now.

The new versions of AERMOD and AERMET will be version 14134 (dated May 14, 2014). The ASHRAE calculation method will be updated to the 2011 ASHRAE Handbook – HVAC Applications.

The transition to the new model versions can be complex depending upon the status of your ECA, pending ECA Application or abatement plans.  Once the new model version comes into effect, any modeling triggered for regulatory purposes must be completed using the new version unless your facility has a Section 7(1) notice.  Now is the time to evaluate how changes to the air dispersion models may affect your facility’s compliance.  

To learn more about how the new model version transition may affect your facility, please contact Penny McInnis at pmcinnis@lehder.com or (519) 336-4101 ext. 245.