Phase 2 ESA

Phase 2 ESA

A Phase 2 Environmental Site Assessment (ESA) is the first intrusive step in site characterization, where an environmental consultant visits a site to investigate Areas of Potential Environmental Concern (APECs) that were identified through a Phase 1 ESA.

Generally, a Phase 2 investigation consists of soil and groundwater sampling on a subject site. In Ontario, the requirements for Phase 2 investigation are guided by O. Reg. 153/04, which specifies the appropriate scope of work based on the APECs identified at the site. The source of a contaminant of concern (COC) for a given APEC along with its chemical properties are also used to inform the sampling and analysis plan (SAP) for that area.

The Phase 2 investigation requires an environmental consulting team to oversee drilling activities while logging soil stratigraphy and collecting subsurface soil samples. The consultant will also determine the areas to install monitoring wells for the collection of groundwater samples.

The accuracy, completeness and applicability of information gained from a Phase 2 Environmental Site Assessment (ESA) depends on the assessors depth of understanding of the client and site goals when preparing the scope of work (SOW). A Qualified Person (QP) (i.e., P.Eng. or P.Geo.) must characterize the site appropriately to gain a clear understanding of site conditions before determining borehole locations/depths and monitoring well positions and after when interpreting site data obtained.

To supplement data obtained in a Phase 2 investigation, AEL employs on-site testing where samples are screened at near real time with field instrumentation, including: ultraviolet fluorescence (UVF), x-ray fluorescence (XRF), and photoionization detectors (PID). Screening data provides AEL with a better understanding of site conditions and informs the sample selection process for laboratory analysis.

Laboratory results are interpreted by AEL’s senior engineers and environmental scientists based on the appropriate site standard. It is the task of the AEL team to determine which standards are relevant to our client’s property while considering their goals for a site.

Throughout a Phase 2 investigation, AEL uses strict quality assurance and quality control procedures (QA/QC) in all areas of site work, data analysis, and reporting, which include:

  • Decontamination of sampling equipment or single-use samplers (e.g., geoprobe sample tubes) to reduce potential cross-contamination
  • Unique sample barcode identifications to track samples through collection, analysis, and reporting, and to avoid data transposition errors and reference number duplication
  • Ensuring appropriate sample collection, preservation, storage and hold times
  • Providing appropriate field duplicates and blanks as per the regulation and/or applicable site investigation standards, including field blanks and duplicates

For an easy-to-understand guide on choosing an environmental engineering company for your site assessment project, download: 9 Questions To Ask Your Environmental Consultant.

Our Process

Why AEL Environment?

Save Time & Money

We ensure that our robust reporting and recommendations not only meet your needs, but help you make decisions efficiently and effectively.

Get Educated

With AEL environment not only do you receive detailed assessments and reports but we make sure you understand them as well. Learn more.

Excellent Client Services

Our dedicated team will answer any of your questions, big or small. We are committed to providing customized solutions. Contact us.

Expert Engineers

With over 30 years of experience our expert engineers will be able to address any concern or issue on your property. Meet the team.

We help you manage the unknown

Every property has a history, we can help you interpret it using our detailed reports.

AEL environment is focused on creating tailored solutions based on your end goals for each property. Tell us the service you need, and our team of expert engineers will inform you.

Together, we can ensure you understand your reports to make informed decisions.

What Our Clients Are Saying
AEL environment
"In my two decades plus as a specialist in Environmental Law, I have dealt with numerous environmental consulting firms right across Canada, and from big to small, Not all of them are able to deal with sophisticated scientific questions and not all of the ones with greater scientific skills are practical."
Michael Peterson, Environmental Law
Sky Counsel Group

We help you manage the unknown

Every property has a history, we can help you interpret it using our detailed reports.

AEL environment is focused on creating tailored solutions based on your end goals for each property. Tell us the service you need, and our team of expert engineers will inform you.

Together, we can ensure you understand your reports to make informed decisions.

What Our Clients Are Saying
AEL environment
"In my two decades plus as a specialist in Environmental Law, I have dealt with numerous environmental consulting firms right across Canada, and from big to small, Not all of them are able to deal with sophisticated scientific questions and not all of the ones with greater scientific skills are practical."
Michael Peterson, Environmental Law
Sky Counsel Group
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