Ontario · CSA Z769 & O.Reg. 153/04

Phase 2 Environmental Site Assessment in Toronto

Ben Engineering offers Phase 2 Environmental Site Assessment (ESA) consulting in Toronto, Ontario — with investigations performed under CSA Z769 and O.Reg. 153/04.

Request a Quote See Phase 1 ESA

Standard: CSA Z769financing & due diligence
Regulation: O.Reg. 153/04RSC, rezoning, permits
Prepared by: Licensed P.Eng & P.Geo30+ years experience
Service area: Toronto, ONand Southwestern Ontario

What is a Phase 2 Environmental Site Assessment?

A Phase 2 ESA is an intrusive investigation involving borehole drilling, soil and groundwater sampling, and laboratory analysis, typically conducted after a Phase 1 ESA identifies Recognized Environmental Conditions.

See our Phase 1 ESA overview for more. In Ontario, Phase 2 ESAs may follow CSA Z769 (financing, due diligence) or O.Reg. 153/04 (RSC filing, rezoning, MECP applications).

Industrial and Commercial Context in Toronto

Toronto's industrial land is concentrated in the Port Lands and South of Eastern employment areas, along with established manufacturing districts in the city's inner suburbs, many of which are undergoing brownfield redevelopment.

Multi-Residential Development in Toronto

Toronto has one of the highest concentrations of high-rise condominium and purpose-built rental buildings in Canada, spread across the downtown core, the waterfront, and dozens of neighbourhood nodes citywide. 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 Toronto

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

How a Phase 2 ESA Is Actually Carried Out

Soil samples are collected at multiple depths from each borehole and screened in the field before being sent to an accredited laboratory, allowing the assessor to prioritize which samples warrant full laboratory analysis.

Borehole locations are selected based on the Phase 1 findings, typically targeting areas of suspected historical spills, former tank locations, or drainage points where contaminants would be expected to accumulate.

Environmental Site Assessment — Overview

Nearby areas we serve

Also servicing the surrounding region

Phase 2 ESAs by area

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