Ontario · CSA Z769 & O.Reg. 153/04

Phase 2 Environmental Site Assessment in St. Catharines

Ben Engineering offers Phase 2 Environmental Site Assessment (ESA) consulting in St. Catharines, Ontario — backed by over 30 years of expertise, in compliance with 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: St. Catharines, 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 St. Catharines

St. Catharines' industrial heritage runs along the Welland Canal corridor, historically anchored by General Motors' engine plant, with modern logistics and manufacturing space continuing to develop near Highway 406.

Multi-Residential Development in St. Catharines

Multi-residential development is concentrated along Ontario Street, Queenston Road, and the downtown core near Brock University's satellite campus, with a mix of mid-rise apartment buildings throughout 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 St. Catharines

In St. Catharines, as in most established Ontario communities, a Phase 2 ESA is most often triggered by a property's proximity to active or former industrial, automotive, or fuel-handling uses, or by a proposed change to a more sensitive land use.

How a Phase 2 ESA Is Actually Carried Out

Where groundwater is encountered, monitoring wells are installed to allow repeat sampling over time, since a single groundwater sample can be misleading if contaminant concentrations vary seasonally.

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.