Ontario · CSA Z768 & O.Reg. 153/04

Phase 1 Environmental Site Assessment in Cornwall

Ben Engineering offers Phase 1 Environmental Site Assessment (ESA) consulting in Cornwall, 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: Cornwall, 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 Cornwall

Cornwall's industrial base is centred on Boundary Road, Marleau Avenue, and Campbell Street in the city's east end, home to established distribution and light-manufacturing buildings including the Cornwall Business Park lands.

Multi-Residential Development in Cornwall

Multi-residential and commercial development is concentrated along Pitt Street downtown and Second Street East, with several mid-rise apartment buildings and ongoing conversions of former industrial sites — including a proposed apartment building on a former industrial property on Guelph Avenue — adding new rental supply. 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 Cornwall

Cornwall's industrial sites along Boundary Road and Marleau Avenue, many dating to mid-20th-century manufacturing, are common candidates for Phase 1 and Phase 2 ESAs whenever they change ownership, use, or zoning designation.

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.

Interviews are conducted with the current property owner or operator, and where possible with previous owners or long-term employees, to capture institutional knowledge of past spills, storage practices, or waste handling that may not appear in the written record.

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.