# CanadaBuys #OR26SL02-88072

Contaminated Sites Assessment and Monitoring Services Source List for Defence Construction Canada

**Posted:** September 24, 2026
**Respond By:** November 03, 2026
**Identifier:** OR26SL02-88072
**NAICS:** 541620, 562910

Defence Construction Canada (DCC) is seeking consulting firms to provide contaminated sites assessment and monitoring services for various locations in Ontario.
- Government buyer: Defence Construction Canada (DCC), a federal agency
- No specific OEMs or vendors are named; this is a professional services procurement
- Services requested:
  - Environmental assessment and monitoring of contaminated sites
  - Work to be performed on an as-needed basis across multiple locations
- Contract details:
  - Initial contract duration of three years
  - Maximum estimated value of $8,000,000
  - Possible extensions: up to two additional one-year periods, with increases of $4,000,000
  - Individual commissions expected between $100,000 and $300,000; maximum commission value $400,000
- Notable requirements:
  - Competitive open bidding
  - Compliance with Canadian Free Trade Agreement (CFTA), CETA, and WTO-GPA
  - Proposals must be submitted electronically via MERX
- No products or part numbers are specified; focus is on professional environmental services

### Description

Defence Construction Canada (DCC) is seeking abbreviated proposals from consulting firms to establish a Source List (SL) for providing professional services on an as-needed basis at various locations in Ontario. The contract duration is three years with a maximum estimated value of $8,000,000, with possible extensions of up to two additional one-year periods and potential increases of $4,000,000. Individual commissions are expected to range between $100,000 and $300,000, with a maximum commission value of $400,000. The procurement is conducted under the Canadian Free Trade Agreement (CFTA), CETA, and WTO-GPA. Proposals must be submitted through the MERX Electronic Bidding System by the specified deadline.

[View original listing](https://canadabuys.canada.ca/en/tender-opportunities/tender-notice/mx-444173075209)