The ChemTRAC program is temporarily suspended, effective May 18, 2020 and will not be able to accept annual reports or provide support to facilities.

You may use the following assessment process for ChemTRAC reporting.

You May Be Required to Report


Your facility is located in Toronto


You do one or more of the following activities:

  • Generate power and sell it to the grid
  • Generate process heat for manufacturing, process and other activities

  Go to Step 2

You are Not Required to Report 


Your facility is NOT located in Toronto


You only do one or more of the following activities:

  • Operate back-up generators for your facility and you do not sell the electricity to grid line
  • Provide comfort heat for a building
  • Use less than 124,000 cubic meter natural gas per year for gas-fired equipment such as boiler, oven and furnace

To help you estimate the amounts you need to report to ChemTRAC, Toronto Public Health has developed calculators* that you can use. These can be opened using Microsoft Excel or a free office suite such as OpenOffice ( or LibreOffice (

These documents may not be fully AODA** compliant. For accessible formats or communication support, please contact ChemTRAC (email or call 416-338-7600).

You may download the calculators related to your business processes. If you use more than one calculator, you may use the “Calculation of Totals” calculator to add up the use and release amounts.

Process Calculators Guides
Operate diesel generators (Up to 600 HP) Diesel Generators (Up to 600 HP) (Excel)
Operate natural gas engine generators Natural Gas Engine Generator (Excel)
Operate natural gas turbine generator Natural Gas Turbine Generator (Excel)
Operate fuel oil boilers (0-99 MMBTUs***) Fuel Oil Boilers (0-99 MMBTUs) (Excel)
Operate fuel oil boilers (100 MMBTUs and greater) Fuel Oil Boilers (100 MMBTUs and greater)  (Excel)
Operate natural gas boilers (0-99 MMBTUs) Natural Gas Boilers (0-99 MMBTUs) (Excel)
Operate natural gas boilers (100 MMBTUs and greater) Natural Gas Boilers (100 MMBTUs and greater) (Excel)
Operate propane boilers Propane Boilers (Excel)
Operate wood-fired boilers Wood-Fired Boilers (Excel)
If you use solvents, degreasing materials or other chemicals that are VOCs or contain VOCs either for maintenance or in your processes Volatile Organic Compounds (VOCs) (Excel) Guide 
If you use 2 or more calculators Calculation of Totals (Excel)

(Add the results from output summary tables of two or more calculators into this calculator to find the total amounts and identify if any chemical meets the reporting thresholds)

* see “Notes about the Calculators” on this page 
** Accessibility for Ontarians with Disabilities Act (AODA)
*** Million British Thermal Units

You are required to keep your records and supporting document for 5 years, including any of the following that are applicable: 

  • Calculation files
  • The monthly summary of natural gas used for the processes in the reporting year
  • The monthly summary of fuel oil or diesel used for the processes in the reporting year
  • The monthly summary of propane and the sulfur content of the propane used for the processes in the reporting year
  • Generator power rating, heat rate of turbine, and operating or testing schedule
  • Quantity of wood burned in the reporting year and the moisture content of the wood
  • Maximum combined thermal input rating for wood combustors onsite, with operating schedule for wood combustors
  • Summary of the amount of degreasing, solvents, cleaning materials or other chemicals used that are VOCs or contain VOCs, along with their Safety Data Sheets (SDS) for the reporting year
  • Confirmation page that you printed after submitting your report (see step 4)

Compare the results for each chemical (from the Output Summary table in the calculators) with corresponding thresholds in the appropriate reporting categories “as listed below”.

Chemical Name Sources Threshold (kg/yr) Category
Acetaldehyde Combustion of natural gas, fuel or wood 100 Manufactured, Released to Air
Formaldehyde Combustion of natural gas, fuel or wood 100 Manufactured, Released to Air
Lead and its compounds Combustion of natural gas, fuel or wood 10 Otherwise Used
Nitrogen oxides (NOx) Combustion of natural gas, fuel or wood 200 Released to Air
Particulate matter 2.5 (PM2.5) Combustion of natural gas, fuel or wood 30 Released to Air
Volatile organic compounds (VOCs) total Degreasing, solvents, natural gas combustion, cleaning materials and maintenance chemicals 100 Released to Air


For more chemicals please please check the “Complete List”.

Reporting Deadline is June 30th Each Year

Submit your report if any of the amounts are equal to or exceed the reporting thresholds


if all of the amounts are below the reporting threshold, you may submit a report as a below threshold facility

Reminder: Print the confirmation page after submitting your report and keep it for 5 years.

221112 – Fossil-Fuel Electric Power Generation

221119 – Other Electric Power Generation

221121 – Electric Bulk Power Transmission and Control

221122 – Electric Power Distribution


For other NAICS Codes please check the “Statistics Canada” website.

The calculators listed above are the most current versions. It is strongly recommended to download the calculator each time you want to use.

The above calculators can help you identify which priority substances (chemicals) your facility uses or releases, and estimate the amounts of these chemicals to see if you need to report to the Environmental Reporting and Disclosure Bylaw. Depending on the processes your business uses, you may need to use more than one of the calculators on the list above – if this is the case, you can add up the amounts using the “Calculation of Totals” calculator.

These calculators are provided solely as an aid. They may not apply or all or parts of your business operations. You can choose to use these calculators or other tools that may be applicable to estimate chemical use and emissions. The City of Toronto makes no representation or warranty as to the applicability of these tools to your facility or to your obligation to comply with the Environmental Reporting and Disclosure Bylaw (Municipal Code Chapter 423). It is the responsibility of each facility owner or operator to take the necessary steps to ensure compliance with the bylaw.