London Renovations DSR

Our certified and experienced environmental consultants can help assess your whole property, or specific indoor areas that are to be demolished or renovated. We have the know how and experience to safely complete designated substances surveys for small and large projects. We can also complete your designated substances report in a timely manner that meets your important timelines.

London Demolition DSR

Prior to beginning any demolition work in Ontario, workers must know what designated substances may be present within the building being demolished. Additionally, there may be transportation and disposal requirements that must also be met. We can help you complete a designated substances survey that will help protect workers and minimize liabilities.

London Emergency DSR

Has the Ministry of Labor placed a stop order on your renovation or demolition project? We can help get your project going again. Generally we can potentially conduct an assessment with sampling, and have final analysis results as well as a final DSR ready on the same day, or next business day. Please contact us for additional information and pricing.


The above Ontario law deals with defining what materials are considered designated substances.

They are as follows:

  • Acrylonitrile
  • Arsenic
  • Asbestos
  • Benzene
  • Coke oven emissions
  • Ethylene oxide
  • Isocyanates
  • Lead
  • Mercury
  • Silica
  • Vinyl chloride

Under Section 30 of the Ontario Occupational Health and Safety Act (OHSA), it is the responsibility of the project owner to have a Designated Substances Report (DSR) completed prior to tendering for contractors. As workers must be aware of any potential hazards that may be encountered prior to beginning any disturbance of materials that may potentially contain asbestos, lead, silica, or mercury.

In London, the Ministry of Labor (MOL) fully enforces the required presence of a Designated Substances Report (DSR) on residential and commercial renovation or demolition projects. Failure to comply with workplace health and safety legal requirements, may result in projects being stopped and delayed, or in expensive fines. So we recommend that you protect your investment by protecting your workers.

If you have any questions about your specific renovation or demolition project, please give us call to discuss particular assessment and testing needs.

We offer free site walkthrough estimates for pre-building demolition designated substances reports.


London: 226-646-4144

Business Hours

Mon-Fri: 9:00 am to 5:00 pm

Saturdays: 9:00 am to 2:00 pm

Sundays: closed

  • London Environmental Testing
    Unit11 - 1673 Richmond Street, Suite 629
    London, ON N6G 2N3


Our technicians are Post-Graduates Certified in Environmental Management & Assessments.