Phase II Environmental Site Assessments (Phase 2 ESA)


Phase II Environmental Site Assessments are undertaken in Calgary and Edmonton and throughout the whole of Alberta.  We have undertaken these assessments for a range of sites including gas stations, industrial, mining, oils and gas, residential, agricultural, dry cleaners and agricultural manufacturing or storage sites.

Our Phase II Environmental Site Assessments are undertaken in accordance with;

  • Canadian Standards Association (CSA) document: Z769-00 (2013) – Phase 2 Environmental Site Assessment.; and
  • the Alberta Environmental Site Assessment Standard. March 01, 2016.

We provide Phase 2 Environmental Site Assessment services to: Commercial, Industrial, Real Estate, Agriculture, Mining, and the Upstream Oil and Gas industries throughout Alberta. Our sampling protocols adhere to the relevant sections of the AEP Tier 1 Soil and Groundwater Remediation Guidelines, the AEP Tier 2 Soil and Groundwater Remediation Guidelines, other provincial reference criteria, and where appropriate, the federal Canadian Council of Ministers of the Environment (CCME) Guidelines.

What is a Phase II Environmental Site Assessment ?

A Phase II Environmental Site Assessment (Phase 2 ESA) entails sampling of the soil and/or groundwater to determine the nature and extent of contamination on or adjacent to the subject property.  A Phase II ESA is undertaken to determine if the soil or groundwater has been contaminated due to previous uses of the site or from neighbouring activities.  Most often a Phase II ESA involves the following:

  • Geophysical survey of the site and buried utility locate surveys to determine any underground voids (such as sumps or underground storage tanks – UST’s) and to avoid drilling through any services when undertaking Geotechnical Drilling to collect soil samples or to install a groundwater monitoring well.
  • Collection of soil, groundwater, surface water and sediment samples. Vapour samples are also collected for certain situations.  Samples collected can be near surface and/or at depth and geotechnical drilling equipment in the form of solid flight augers or direct push sampling is often used in order to collect the samples and install monitoring wells.
  • Samples collected are inspected for their physical properties and then analysed by a registered environmental laboratory to determine any contaminants.
  • Data interpretation and analysis which often includes a Conceptual Site Model and qualitative risk assessment. Levels of contaminants are compared against guideline levels.
  • Preparation of a Phase II ESA detailed report.

As experienced Environmental Consultants and Biological Consultants we can undertake a range of assessments to assist our clients throughout Alberta.  As a small company we are client focussed and cost effective.