In-Situ Remediation


In-Situ Remediation


Listed below are our latest case studies within the project category, In-Situ Remediation:


Bedrock Remediation Case Study – Where There’s a Will There’s a Way

The site was formerly operated as a steel manufacturing facility that included historic degreasing operations and chemical storage. Environmental investigations identified the presence of chlorinated solvents, including trichloroethylene (TCE), dichloroethylene (DCE) isomers, and vinyl chloride (VC), in groundwater located in

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In-Situ Trap & Treat® Injection Satisfies Ministry Standards

Location: Industrial in Greater Toronto Area Contaminant: Chlorinated ethenes and ethanes Concentration: Dissolved phase groundwater impacts (up to 1,000 ug/L) Formation Type: 3.0 m thick layer of saturated silty sands, above limestone bedrock Historic industrial activities resulted in two separate

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Cold Weather Injections at Remote Site

A historical leaking UST resulted in contamination to soil and groundwater inside a remote National Park. A Risk Assessment identified concerns over benzene concentrations for a planned building expansion. Excavation was ruled out due to the depth of the impacts

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Chlorinated Solvents Treated Using “Trickle-Down” Method

Historic releases over many years caused significant vertical migration of PCE into soil and ground water. Major challenge encountered: impacts greater than 6 mbgs in silty clay till beneath occupied building.

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Bedrock Drinking Water Well Protected

At a trailer park in Eastern Ontario, two tanks released heating oil into the underlying unconsolidated and fractured rock. Though much of the affected overburden was excavated, a petroleum hydrocarbon plume and associated free phase remained in the fractured bedrock,

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In-Situ Injections Revitalize Historic Site

Historical leaks from a series of underground tanks and pipes were indentified at a former fuel dispensing facility in Toronto. The leakage had created an underground plume over an area of approximately 1,000m2. Excavation was deemed to be technically challenging

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Vertex Saves Wells without Disrupting Residents

A spill near a residential area in Quebec released petroleum hydrocarbons into the underlying groundwater and soil. The accident posed a risk to nearby wells, endangering the local water supply. PHC contaminants included: Benzene, Toluene, Xylene

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Residential Area in Quebec

Near a residential area in Quebec, an accidental release of petroleum hydrocarbons from a spill into the underlying groundwater and soil posed a risk to nearby water supply wells. Groundwater concentrations for selected PHCs included: Benzene (maximum concentration of 146

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Industrial Site in New Jersey

At an industrial site in New Jersey, historical leakage from a UST released petroleum hydrocarbons into the underlying groundwater and soil creating a health and ecology risk to overlying and down gradient receptors. Soil concentrations of PHCs included: BTEX (maximum

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Remote Residence Leaked Petroleum Hydrocarbons

At a remote residence, petroleum hydrocarbons leaked from a UST into the underlying groundwater and soil creating a health and ecology risk to the residents and local environment. Soil concentrations of PHCs included: BTEX (maximum concentration of 152 μg/g) F1

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