Category: Remediation
Decommissioning a Microwave Satellite Communication Station
Executive Summary AEL completed a Phase Two Environmental Site Assessment (ESA) and a full-depth, remedial excavation program at a remote, decommissioned microwave tower facility in Northern Ontario. The goal of the project was the restoration and return of the land leased to the client by the local First Nation community.  Prior investigation had identified soil...
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Contaminated Site Spring Cleaning – Cost-Effective Remediation
Whether purchasing, selling, or refinancing a property, environmental contamination in soil, groundwater, or even indoor air may seem like a daunting and costly roadblock to achieving your goals. If you are like many individuals who feel “stuck” with a contaminated site, you most likely will have found remediation options to be cost-prohibitive to the extent...
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Innovations in Environmental Site Remediation Over the Past 25 Years
Over the past 25 years, there have been a considerable number of environmental innovations  in environmental site remediation. These progressive changes are reflected in the adaptations of applicable regulatory standards and industry best practices. What was once deemed acceptable procedure at the turn of the century is not necessarily in the best interests of the...
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Bioremediation Case Study
Project Location: Ontario, Canada Former Trucking Distribution and Service Centre AEL was retained to conduct a Phase 1 and 2 Environmental Site Assessment (ESA) at a former transport truck repair and maintenance property (“the Site”), situated in a residential area. Historically, the Site had been used as a truck marshalling yard, for refuelling, and as...
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What Is Brownfield Redevelopment and How Can it Lead to Investment Opportunities?
When it comes to redevelopment, brownfield properties can lead to significant investment opportunities. The term ‘brownfield(s)’ refers to a former commercial or industrial site that is contaminated. While urban areas remain filled with empty buildings and abandoned land, there is always a rising demand for available commercial and industrial properties. This has created a growing...
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Not Just “Dirt”: Why Does Clean Fill Matter?
The Ontario Ministry of the Environment, Conservation and Parks (MECP) 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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Remediation Approach: Removing Arsenic from Water Using Chemical Precipitation
The use of arsenic in agriculture and industry since the early 1900s has increased the concentration of arsenic in the environment. Arsenic can be found in soil, groundwater, and wastewater – often at concentrations that can be harmful if left untreated. Removing arsenic from water is critical. One specific way that arsenic impacts the environment...
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Remediation Approach: Screening and On-Site Testing at Remote Sites
 On remote sites, like those in Canada’s Far North, the cost of traditional remediation can be astronomical. Because these sites are often beyond the access of landfills, soil transport and disposal can make traditional “dig-and-dump” remediation too expensive to pursue. For this reason, AEL believes that remote sites are often ideal locations for choosing alternative...
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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 20 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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