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Specialist conducting an environmental site assessment in the field
Expertise

Environmental site
assessment (Phase I ESA).

Knowing a property's past before you invest. A Phase I ESA to document contamination risks related to a site's past uses.

Overview

A standalone report to assess a site's contamination risks.

The Phase I environmental site assessment (Phase I ESA) determines whether a property is likely to have been affected by contaminants related to its past uses. It relies on a documentary review, a site reconnaissance visit, and an analysis of potential contamination indicators.

At Envirovia, this expertise is deployed when it's linked to an ecological characterization process or a broader environmental project. It remains a standalone report, produced to support a clear decision on the next steps to consider.

What it includes

A complete reading of the environmental risk.

  • Documentary review: past uses, contamination registries, historical aerial photos
  • Site visit: observation of contamination indicators and current site conditions
  • Identification of potential sources of contamination
  • Georeferenced GIS mapping of environmental issues
  • Phase I ESA report compliant with CSA Z768-01 standards and the MELCCFP framework
  • Clear recommendations on whether a Phase II is required
Site assessment with field analysis and mapping
Our method

A distinct methodology to document contamination risks.

  1. In-depth documentary review

    Compilation and analysis of all available sources of information: land registry, historical permits, aerial photos since 1930, ministerial databases (RÉPERTOIRE, GESTIM), and proximity to at-risk industries.

  2. Site visit

    The reconnaissance visit allows our team to document contamination indicators, current site conditions, observed spills, and other elements relevant to the environmental analysis.

  3. Analysis and risk assessment

    Synthesis of documentary and field data, assessment of the likelihood of contamination in accordance with CSA standards, and formulation of the findings needed for decision-making.

  4. Report and decision-making support

    Delivery of a standalone report with conclusions on contamination potential. Support for interpreting results and planning next steps, particularly when a Phase II is required.

This expertise, in action.

Environmental assessment of an industrial site
Agricultural land under development