Air Quality Services

At LEHDER we recognize our client’s need to make decisions that provide for operational flexibility while meeting regulatory, economic and social requirements.

All Air Quality Services are managed internally without outsourcing and partnering. Our core strength in Air Quality Management is demonstrated in the LEHDER Environmental Information Management Service (LEIMS). The LEHDER Emissions Testing Team is one of the largest and most experienced in Canada, recognized by Canadian and U.S. regulatory agencies.


Air Dispersion Modeling

Air Dispersion Modeling

Air Dispersion Modeling

Air Dispersion Modeling is often a requirement for attaining Environmental Compliance Approval and Air Permits. LEHDER offers extensive modeling expertise across a wide variety of sectors. Pro-active self-assessment is an area where LEHDER excels, allowing clients to identify potential problems and employ effective solution development.

Emission Inventories

Emission Inventories

Emission Inventories

A robust source and emission inventory is an integral part of a strategic approach to understanding emissions and the significance of those emissions. These inventories are used for applications for Environmental Compliance Approval, air dispersion modeling, NPRI, Ontario Regulation 127/01, TRI, NERM submissions and emission reduction programs.

Environmental Compliance Approval

Environmental Compliance Approval

Environmental Compliance Approval

In Ontario, most industrial facilities are required to have Environmental Compliance Approval (ECA) granted by the Ontario Ministry of the Environment (MOE) in order to operate. If a business’s activities impact the natural environment, an ECA from the MOE is required to operate legally in Ontario.

Greenhouse Gas Emission Reporting

Greenhouse Gas Emission Reporting

Greenhouse Gas Emission Reporting

On December 1, 2009, the Ontario Ministry of Environment posted Ontario Regulation 452/09 - Greenhouse Gas Emission Reporting, a Regulation under the Environmental Protection Act. The purpose of the Regulation is to develop accurate and verified Greenhouse Gas Emission Reporting in preparation for a future Greenhouse Gas "Cap and Trade" regime.

National Pollutant Release Inventory

National Pollutant Release Inventory

National Pollutant Release Inventory

The National Pollutant Release Inventory (NPRI) was created in 1992 to provide information on pollutants released to the environment and transferred for disposal. Reporting of NPRI is mandated under the Canadian Environmental Protection Act (CEPA).

Odor Investigations

Odor Investigations

Odor Investigations

Citizen complaints about odor need to be taken seriously to avoid negative publicity, regulatory orders and perhaps civil actions. LEHDER has developed a unique phased approach to odor investigations to ensure the problem is clearly understood; solutions are developed to address the root cause of the odorous emissions.

Ontario Regulation 419/05

Ontario Regulation 419/05

Ontario Regulation 419/05

Ontario Regulation 419/05 – Local Air Quality has introduced radical and sweeping changes in the way that Air Quality is regulated in Ontario. The elements of this Regulation will be implemented over a 15 year period with all emitters covered by 2020.

Too Much Data?

Too Much Data?

Too Much Data?

Industrial facilities are faced with the challenge of collecting, storing, managing and evaluating an immense amount of Environmental, Health and Safety data. LEHDER's Environmental Information Management Service (LEIMS) can assist facility personnel in managing their facility's data to turn it into effective information.

Toxics Reduction Strategy

Toxics Reduction Strategy

Toxics Reduction Strategy

The purpose of the Toxics Reduction Act (2009) and Ontario Regulation 455/09 is to reduce the industrial use of toxic substances in Ontario via identification and reduction planning.