Ontario · CSA Z768 & O.Reg. 153/04

Phase 1 Environmental Site Assessment in Mississauga

Ben Engineering offers Phase 1 Environmental Site Assessment (ESA) consulting in Mississauga, Ontario — conducted under the CSA Z768 Standard and Ontario Regulation O.Reg. 153/04, performed by licensed P.Eng. and P.Geo. professionals with over 30 years of experience.

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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: Mississauga, 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 Mississauga

Mississauga's employment lands include the Airport Corporate Centre near Pearson, the Meadowvale Business Park, and extensive industrial space along Dixie Road, Britannia Road, and the 401/403 interchange.

Multi-Residential Development in Mississauga

The City Centre around Square One has become a dense cluster of high-rise condominium towers, complemented by additional concentrations along the Hurontario corridor and in Port Credit near the Lake Ontario waterfront. 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 Mississauga

Properties located near or formerly used for industrial or automotive purposes in Mississauga are the ones most commonly flagged for further environmental investigation during a real estate transaction, rezoning application, or building permit review.

How a Phase 1 ESA Is Actually Carried Out

The historical records review typically draws on fire insurance plans, aerial photographs spanning several decades, and prior environmental reports where available, cross-referenced against the property's chain of title to identify past uses that might not be apparent from a site visit alone.

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.