(250) 307-7365 info@sageenvironmental.ca

Stage 1 Preliminary Site Investigation


The team of trained experts at Sage Environmental provide high quality technical expertise, advice, and support to our clients as part of Stage 1 / Phase I Investigations.

Stage 1 Preliminary Site Investigation (PSI)

Stage 1 Preliminary Site Investigation (PSI): Also referred to as a Phase 1 Environmental Site Assessment (ESA) is a method used to assist in determining potential environmental liabilities due to contamination on a site or property. This process involves a detailed review of land uses and history including a site visit, record searches, personal interviews and the evaluation of related information and reporting. This information is compiled and used to determine the potential of impact on a site due to contamination. Our reporting will provide conclusions and recommendations whether further investigations if warranted, such as a Stage 2 PSI / Phase II ESA.

Our Stage 1 PSI’s Meet:


  • CSA Standard  “Z768-01 Phase 1 Environmental Site Assessment” – Phase 1 ESA
  • Canada Mortgage and Housing Corporation CMHC guidelines
  • Requirements of Provincial and Federal regulators

A Stage 1 PSI / Phase I ESA May Be Used To:


  • Meet a regulatory request, order or direction
  • Provide a liability assessment prior to an acquisition or divestiture of a property or site
  • Provide a due diligence measure in support of a real estate or financing agreement
  • Provide baseline liability assessment prior to tenancy of a site
  • Provide a due diligence measure for compliance in corporate stewardship

What Is A Phase I Environmental Assessment?

A Phase I ESA is primarily a desktop review accompanied by a site visit that will assess the current and historical uses of a property and the surrounding area…

Success Stories

“Bercum Builders trusts the team at Sage Environmental to help us navigate the complexities of the environmental requirements pre-construction, during construction, and post-construction. As regulations continue to change and evolve, we rely on their expertise to guide us through to successful project completion.”

Darren Witt

Owner, Bercum Builders

“From our initial meeting and throughout the project spanning 9 months, I have been impressed by Sage Environmental’s knowledge, practicality and demeanor. Sage Environmental has always exhibited professionalism beyond reproach and has been responsive to the need of a small company to contain the costs.”

Tom Morgan

Owner, Monashee Powder Snowcats Inc.

Featured Articles

Fire Impacts of Invasive Species

Fire Impacts of Invasive Species

By: Skye Wolfe, PAg In November 2023, I attended the Integrated Vegetation Management Association's (IVMA) 2023 Biennial Forum, which highlighted many important topics surrounding invasive plant management in our changing climate. The one topic that really...

Considerations when Assessing for Contamination.

Considerations when Assessing for Contamination.

By Kristen Cockburn – PAg. Making a shortlist of Potential Contaminants When completing an Phase I Environmental Site Assessment or Stage 1 Preliminary Site Investigation, we review the current and historical land uses of the Site, to identify the potential for...

Detailed Site Investigations (DSI)

Detailed Site Investigations (DSI)

Phase II Environmental Site Assessment and Stage 2 Preliminary Site Investigation that identify contamination often recommend a Detailed Site Investigations (DSI).  A DSI finds the extents of contamination to quantify impacts to soil, groundwater and soil vapour. The details on contaminant type, severity and amount will inform further remediation or risk assessment options.  A DSI may include off-Site investigations if contamination has moved past the Site boundaries. A DSI is required prior to remediation for any type of permit release or Certification Document from the Ministry of Environment (BC ENV).


Book A Consultation

Schedule a no obligation 20-minute phone call with one of our team members to see if Sage is the right fit for your environmental needs. 

Main Office

3101 29th St #8
Vernon, BC  V1T 5A8
(250) 307-7365

Satellite Office

Kelowna, BC 
(778) 760-4727

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