Ontario · CSA Z768 & O.Reg. 153/04

Phase 1 Environmental Site Assessment in Ottawa

Ben Engineering offers Phase 1 Environmental Site Assessment (ESA) consulting in Ottawa, Ontario — prepared in accordance with the CSA Z768 Standard and Ontario's O.Reg. 153/04.

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Standard: CSA Z768financing & due diligence
Regulation: O.Reg. 153/04RSC, rezoning, permits
Prepared by: Licensed P.Eng & P.Geo30+ years experience
Service area: Ottawa, ONand Southwestern Ontario

What is a Phase 1 Environmental Site Assessment?

A Phase 1 ESA is a non-intrusive investigation to identify potential environmental contamination risks on a property. No soil sampling or laboratory testing is conducted at this stage.

See our Phase 2 ESA page for more. In Ontario, the CSA Standard applies to real estate due diligence and financing; O.Reg. 153/04 applies to rezoning, building permits, or filing a Record of Site Condition.

Industrial and Commercial Context in Ottawa

Ottawa's employment lands are spread across the Kanata North technology park, the Gloucester and industrial areas near the airport, and federal-government-related facilities throughout the National Capital Region.

Multi-Residential Development in Ottawa

High-density residential development is concentrated in the downtown core, along the LRT corridor, and in growth nodes such as Kanata and Barrhaven, with dozens of high-rise condominium and purpose-built rental buildings across the city. Properties near these commercial and industrial corridors are the ones most likely to require environmental due diligence before financing, redevelopment, or a change of use.

Why This Matters for Properties in Ottawa

The redevelopment pressure on Ottawa's older commercial and industrial land — a pattern seen across much of Ontario as municipalities intensify around transit and existing infrastructure — means environmental due diligence is an increasingly routine step in local development approvals.

How a Phase 1 ESA Is Actually Carried Out

The final Phase 1 report presents the assessor's professional opinion on whether Recognized Environmental Conditions exist, and if so, provides a clear recommendation on whether further investigation — a Phase 2 ESA — is warranted before the transaction, financing, or approval proceeds.

In practice, the site reconnaissance is conducted by a qualified environmental professional who documents visible evidence of contamination, examines drainage patterns and surface staining, and notes the condition of any storage tanks, drums, or waste materials on site.

Environmental Site Assessment — Overview

Nearby areas we serve

Also servicing the surrounding region

Phase 1 ESAs by area

We work across Ontario, generally within 500 km of our Vaughan head office. Each area has its own page.