In-Situ Remediation


In-Situ Remediation


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


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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Operating Manufacturing Facility

At an operating manufacturing facility, free phase petroleum hydrocarbons were discovered underneath the facility. Soil concentrations of PHCs included: BTEX (maximum concentration of 5 μg/g ) F1 & F2 (maximum concentration of 4,920 μg/g ) F3 & F4 (maximum concentration of 44,000

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