Designated Substance Surveys (DSS)

Clear, practical surveys to support safe renovation, demolition, and regulatory compliance.

Work Environments

Designated Substance Surveys are conducted in buildings where construction, renovation, or demolition is planned and regulatory clarity is required before work proceeds.
Typical settings include:
Commercial and industrial buildings
Institutional and public-sector facilities
Older properties with limited documentation
Facilities undergoing phased renovations
Sites preparing for tender or permit submission
Surveys are planned to provide usable information without unnecessary disruption.

Typical Engagement Scenarios
Renovation or demolition work is being planned
Regulatory requirements must be met before tendering
Building records are incomplete or outdated
Multiple substances may be present
Clear documentation is required for third parties
Designated substances (O. Reg. 490/09)

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

Document Review & Planning

Available drawings, records, and project scope are reviewed to define survey requirements.

Site Walkthrough & Identification

Walk the space and map suspect materials and areas of concern based on use and condition.

Designated Substance Screening (All 11)

Screen for all Ontario designated substances and flag where each may reasonably be present.

Targeted Sampling (When Required)

Collect samples only where confirmation is needed to support planning, tendering, or compliance.

Analysis & Compilation

Compile findings into a clear, organized record tied to locations, materials, and assumptions.

Reporting & Guidance

Provide a practical report with recommendations that supports next steps and decision-making.

Designated Substance Surveys are conducted in accordance with applicable regulations, including OHSA and recognized industry guidance.
Reports are prepared to be:
clear
defensible
usable by owners, consultants, and contractors