Phase I Environmental Site Assessment

Phase I Environmental Site Assessments (ESAs) are a systematic screening tool used by the oil and gas industry to make informed decisions on the Environmental Liability associated with a specific property.

The Phase I ESA does not involve intrusive procedures; sampling and analysis of soil, groundwater, or building materials is not carried out as part of the assessment. The role of the assessor is to document evidence of actual or potential contamination and not to judge the acceptability of risks associated with such contamination.

A Phase I Environmental Site Assessment includes:

  • A review to characterize the subject property and surrounding area, identify historical and current land use and gather information relevant to the assessment
  • Interviews conducted with persons knowledgeable about the subject property use and history
  • A site visit to substantiate information obtained during the assessment and gain a full understanding of the environmental condition of the subject property
  • A report detailing the findings and conclusions of the assessment

But why not just start by analyzing the soil and groundwater?

A phased approach to Environmental Assessment reduces risk, reduces costs and is the best approach to manage environmental liability. A suitable Phase I ESA will gather sufficient information to make a decision on whether a Phase II ESA ought to be completed, and will be a critical planning tool for any further assessment. The success of a Phase II ESA and subsequent Environmental Assessments often hinges on the quality of information gathered during the Phase I ESA.

Ridgeline has the experience and qualifications to complete Phase I ESAs for our clients in Alberta, Saskatchewan and British Columbia for all property types.

For our clients in the energy sector Ridgeline has the experience and the skill set to complete comprehensive Phase I ESAs on Oil and Gas facilities complaint with all Regulatory criteria necessary for the applicable Reclamation criteria in Alberta and Saskatchewan.