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:

  • Autobody and collision repair
  • Painting or stripping vehicles
  • Sanding
  • Welding
  • Rebuilding or re-manufacturing of vehicle components



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:

  • General mechanical repair
  • Electrical repair
  • Maintenance for motor vehicles
  • Engine repair and maintenance
  • Exhaust system replacement
  • Transmission repair and electrical system repair
  • Oil change, lubrication
  • Car washing
  • Tire repair
  • Components sales

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.


  • If you have used more than 150 L (40 gallons) of paint products and cleaners per year, then you may have reached the reporting threshold for VOCs.
  • If you have used more than 125,000 cubic metres of natural gas per year to provide heat for your processes, then you may have reached the reporting threshold for NOx.
Process Calculators Guide
Auto body refinishing Autobody Refinishing (Excel) Quick Guide, New!


If you have one or more dust collectors Dust Collectors (Excel)
If you use chemicals that are VOCs or contain VOCs for parts cleaning or degreasing only Volatile organic compounds (VOCs) (Excel) Guide 
Process heating
If you use 2 or more calculators Calculation of totals (Excel) (Add the results from the output summary tables of two or more calculators into this calculator to find the total amounts and identify if any chemical meets the reporting threshold)

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

You are required to keep your records and supporting documents for 5 years, including:

  • Calculation files
  • Summary of the amount of paint products, cleaning, degreasing materials or other chemicals used that are VOCs or contain VOCs and used in a reporting year, along with their Safety Data Sheets (SDS)
  • Specification sheets for dust collectors to show the air flow rates and for filters to show the efficiencies if any
  • Summary of electrode types used and the weight of each electrode type used for the reporting year
  • The natural gas bills for the reporting year, if you used natural gas for any process heating
  • 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 Source



Volatile organic compounds total (VOCS) Paint products, cleaning  and degreasing solvents, other chemicals that contain VOCs 100 Release to Air
Particulate matter (PM2.5) Sanding and preparation station, welding, natural gas combustion 30 Released to Air
Chromium, non-hexavalent, and its compounds Welding, natural gas combustion 100 Processed
Chromium, hexavalent, and its compounds Welding, natural gas combustion 10 Processed
Lead and its compounds Welding, natural gas combustion 10 Processed
Manganese and its compounds Welding, natural gas combustion 10 Processed
Nickel and its compounds Welding, natural gas combustion 10 Processed
Nitrogen oxides (NOx) Natural gas fired boilers if you have used it to provide heat for your processes 200 Released to Air


For more chemicals 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.

811111 – General Automotive Repair

811112 – Automotive Exhaust System Repair

811121 – Automotive Body, Paint and Interior Repair and Maintenance

811119 – Other Automotive Mechanical and Electrical Repair and Maintenance

811122 – Automotive Glass Replacement Shops

811192 – Car Washes

811199 – All Other Automotive Repair and Maintenance


For other North American Industry Classification System (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 use it.

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 in Step 2 – 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 to all or parts of your business operations. You can choose to use these calculators or other tools 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.