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OSSGA Commercial Aggregate and Membership Directory Now Available October 3, 2019
OSSGA Shows Support of Minister Yakabuski's Announcement on Aggregate Reform September 26, 2019
Axle Weight Pilot Project Finished August 26, 2019
The objective of the pilot project was to develop a database that will help standardize the way allowable gross weights and axle weights are collected, stored and used for compliance.
Calling all Speakers! July 9, 2019
Bill 108 on its Way to a Vote! June 6, 2019
The Government of Ontario Has Announced Bill 108 More Homes, More Choices Act, 2017 May 3, 2019
Ontario Aggregate Summit April 1, 2019
TEMPLATE Letter for Members to Use to Submit Responses to ERO Posting on Growth Plan February 13, 2019
The government has submitted a proposal to make Modifications to O. Reg. 311/06 (Transitional Matters - Growth Plans) made under the Places to Grow Act, 2005 to implement the Proposed Amendment to the Growth Plan for the Greater Golden Horseshoe, 2017. OSSGA has made the point to the government that the current policy framework is not working. Approvals for new mineral aggregate operations in Southern Ontario are taking up to 10 years to complete the process. There are too many overlapping policies and inconsistent approaches between the Provincial Plans, Regional Official Plans, Local Official Plans and Conservation Authority policies regarding the management of this essential non-renewable resource.
Specification Alert February 6, 2019
Please be advised that there have been changes made to Aggregate Specifications for OPSS 1002, April 2018. This revised specification has been included in several MTO tender documents recently, most notably MTO Contract #2018-2024, Hwy 400 & Hwy 89 Interchange, Closing Feb. 14, 2019 and has raised concerns with many suppliers.
Avenues Winter 2019 Issue Now Available! February 5, 2019
The newest Winter 2019 issue of Avenues Magazine is now available online!
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Rules on Local Air Quality

March 29, 2017 at 2:56 PM

On March 8, 2017 the MOECC posted key guidance documents for O.Reg 418/05: Air Pollution – Local Air Quality, including an Air Dispersion Modelling Guideline for Ontario (ADMGO), a Procedure for Preparing an Emission Summary and Dispersion Modelling Report and a Guideline for the Implantation of Air Standards in Ontario.

The Law

Ontario regulates contaminants released to air by various sources, including local industrial and commercial facilities, to limit exposure to substances that can affect human health and the environment.

If your business emits any contaminants to the air, you must comply with the regulation by meeting certain standards that may apply.

There are three compliance approaches under the regulation:

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


For additional information and to read The Rules on Air Quality and Pollution, click below.

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