Remedial Approach Selection – Giving a Thoughtful Evaluation of Strategies featured image
Remedial Approach Selection – Giving a Thoughtful Evaluation of Strategies
Not every remedial approach will work on every site. Certainly not every remedial approach is ideally suited for every site. AEL takes a careful approach to evaluating and selecting remedial strategies that are matched to the client’s specific goals for the site. When a Phase II ESA finds impacts above the allowable limit on a…
Understanding A CSM – Using On-Site Testing to Strategically Fill Data Gaps featured image
Understanding A CSM – Using On-Site Testing to Strategically Fill Data Gaps
The Triad approach is a set of three strategies, supported by the US EPA, which is widely recognized as the proven modern standard for characterizing and remediating impacted sites. While Canadian regulation does not specifically rely on the Triad approach (although it may introduce similar regulation at some point), Canadian best practices do favour the…
Case Study: Changing Course During a Phase 2 ESA featured image
Case Study: Changing Course During a Phase 2 ESA
New information collected on site during a client’s Phase 2 ESA, resulted in the need to adapt their sampling plan.
Real-Time Results with the XRF featured image
Real-Time Results with the XRF
When accurate real time screening results are collected during an environmental site investigation or remediation, the team gains an invaluable tool for directing field work. The use of on-site testing ensures that adequate information is collected in order to make confident decisions about site conditions and next steps. On-site soil testing tools such as ultraviolet…
Remediation Approaches – In Situ Chemical Oxidation (ISCO), Part 1 featured image
Remediation Approaches – In Situ Chemical Oxidation (ISCO), Part 1
Is ISCO a good choice for your site? Many contaminants and site conditions are difficult to treat with conventional remediation technologies such as soil vapor extraction, air sparging, bioremediation, or pump and treat. In addition, conventional technologies are often costly and time-consuming. For the past 20 years oxidation has become a common alternative for in…
Remediation Approaches – In Situ Chemical Oxidation (ISCO), Part 2 featured image
Remediation Approaches – In Situ Chemical Oxidation (ISCO), Part 2
When is ISCO a good fit for an environmentally impacted site? In situ chemical oxidation is not applicable to all contaminants or to all situations. Considerable research has been conducted and is continuing to determine the optimal contaminant–oxidant match. The application of in situ chemical oxidation is a step-wise procedure involving: The first three of…
Topographic Site Surveys – Traditional, Modern and Beyond! featured image
Topographic Site Surveys – Traditional, Modern and Beyond!
Topographic site information increases certainty in a range of operations from benchmarking, calculating drainage, estimating stockpile volumes or potential excavations.
Are All Phase One Environmental Site Assessments (ESAs) Created Equal? featured image
Are All Phase One Environmental Site Assessments (ESAs) Created Equal?
Comparing O.Reg 153/04 and CSA Standard Environmental Site Assessments in Ontario, and when one is required versus the other.
How Is Chemical Remediation Accomplished? featured image
How Is Chemical Remediation Accomplished?
This was a recent site which AEL worked on, which was contaminated after a fuel tank leaked on the property. A chemical remediation was best suited for the site. This photo shows the excavator beginning to dig a hole for remediation trench. The hole would be approximately 5 m x 5 m down to groundwater,…
Ensuring High-Quality Data to Reduce Uncertainty in Phase 2 ESA featured image
Ensuring High-Quality Data to Reduce Uncertainty in Phase 2 ESA
When gathering data for a Phase 2 ESA or other reports through on-site testing or environmental site screening, it is important to note that the results are only as good as the data. On-Site Data Quality & Why It Matters: Inaccurate data means that decisions will be based on erroneous beliefs and a poor site…