Hazardous Materials

The following list outlines the eleven Designated Substances outlined within the Ontario Occupational Health and Safety Act.





Cove Oven Emissions                    

Ethylene Oxide





Vinyl Chloride 

The effects of exposure to any hazardous substance depend on the dose, the duration, how you are exposed, personal traits and habits, and whether other chemicals are present. Needless to say, however, all of the substances can be dangerous under the right – or, shall we say, the wrong – circumstances.

Two of those circumstances are when you are planning to build or demolish. Under Section 30 of the Occupational Health and Safety Act, RSO 1990 c. 0.1, a building owner must determine if there are any hazardous materials on site prior to construction or demolition activity.  If that owner is you, you will need someone with our expertise to test your site prior to proceeding.

The following is a brief overview of Danson services related to hazardous materials:

Hazardous Materials Assessment – Individual assessments are made to identify designated substances

and their condition and requirements for special treatment such as control programs or specialized

removal and disposal techniques. In conjunction with the survey for designated substances, the presence of Polychlorinated Biphenyl's (PCBs) in fluorescent light fixture ballasts, ozone depleting substances, and

other potentially hazardous materials associated with the building are noted. Findings outlined within

detailed Report.

Hazardous Materials Remediation – Provide recommendations for hazardous materials removal, assist

in acquiring a qualified Contractor, and overseeing Remediation activities.  Remediation activities and

inspections are outlined within detailed Report.

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