Ontario · CSA Z769 & O.Reg. 153/04

Phase 2 Environmental Site Assessment in Ajax

Ben Engineering offers Phase 2 Environmental Site Assessment (ESA) consulting in Ajax, Ontario — conducted under CSA Z769 and Ontario Regulation 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: Ajax, 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 Ajax

Ajax's industrial base is concentrated south of Highway 401 near Salem Road and Westney Road South, anchored by developments such as Ajax Industrial on the Park, an 82-acre campus of modern distribution buildings.

Multi-Residential Development in Ajax

Multi-residential development is split by the 401: north of the highway, condominium and apartment buildings cluster along Church Street, Westney Road, and Kingston Road, while south of the 401 they concentrate along Lake Driveway and Harwood Avenue South 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 Ajax

In south Ajax, developments such as Ajax Commercial Condos on Bayly Street East illustrate the pattern common across the city: former industrial and commercial land being repositioned for higher-density use, which frequently triggers a Phase 1 or Phase 2 ESA as part of municipal approvals.

How a Phase 2 ESA Is Actually Carried Out

Laboratory results are compared against the applicable Ministry of the Environment, Conservation and Parks site condition standards for the property's actual and intended use, and any exceedances are clearly flagged in the final report along with recommended next steps.

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.