Tag: Regulations
An Introduction to O.Reg 153/04
What is O.Reg 153/04? Ontario Regulation 153/04 is the provincial standard for the assessment and cleanup of the environmentally impacted land. Under O. Reg. 153/04, land owners can achieve liability protection from future clean-up requirements through a Ministry of the Environment, Parks and Conservation (MECP) acknowledged Record of Site Condition (RSC). In short, following the...
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Not Just “Dirt”: Why Does Clean Fill Matter?
The Ontario Ministry of the Environment and Climate Change (MOECC) has identified improperly managed Soil Fill as an important potential contributor to contaminated sites. Soil to be moved from one property (Source Site) to a different property (Receiving Site) must be managed in order to prevent the discharge of a contaminant to the environment that...
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Understanding A CSM – Finding Data Gaps
When preparing a Record of Site Condition under O.Reg. 153/04, the investigative team must create a conceptual site model, or a CSM. The CSM clearly articulates the project team’s (including Qualified Person, project engineers, field scientists, and others) understanding of the site’s environmental system framework, impacts and associated potential risks.   One aspect of the...
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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 15 years oxidation has become a common alternative for in...
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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: Screening Bench ScaleTesting Pilot...
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Are All Phase I ESAs Equal?
When O.Reg. 153/04 was updated in 2011, the Ministry of the Environment, Parks and Conservation (MECP) changed from general guidelines for Phase I ESAs to carefully prescribed rules. While the principal components are the same the Regulation now gives a detailed description of steps required including objectives and requirements for each component. These rules are...
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Understanding a CSM – The Basics in Ontario
When managing a site in Ontario, it is essential to understand Ontario Regulation 153/04 and the environmental due diligence it requires. What Is A CSM? A Conceptual Site Model (CSM) is one of the requirements that shapes the Environmental Site Assessment (ESA) process (both Phase I and II) and is required for a Record of...
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What Is Environmental Risk Assessment?
Despite their best efforts to ensure that their properties are clean and free from environmental impacts, landowners occasionally find (through a Phase II ESA) that their property has some kind of contamination in the soil or groundwater. Their property is no longer compliant with O. Reg. 153 and they have environmental liability that needs to...
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