Ontario · CSA Z768 & O.Reg. 153/04

Phase 1 Environmental Site Assessment in Guelph

Ben Engineering offers Phase 1 Environmental Site Assessment (ESA) consulting in Guelph, Ontario — conforming to the CSA Z768 Standard and Ontario Regulation 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: Guelph, 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 Guelph

Guelph's principal modern industrial node is the Hanlon Creek Business Park in South Guelph, part of the Highway 401/Hanlon Expressway corridor sometimes branded Ontario's Innovation Corridor, alongside established manufacturing areas along Woodlawn Road and Silvercreek Parkway.

Multi-Residential Development in Guelph

The downtown core and the area around Gordon Street and the University of Guelph carry the city's highest concentration of mid-rise apartment and condominium buildings, supplemented by newer development along Stone Road. 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 Guelph

Hanlon Creek Business Park's continued build-out in South Guelph, along with the conversion of older manufacturing sites elsewhere in the city, keeps demand for both financing-related Phase 1 ESAs and O.Reg. 153/04 assessments steady.

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.