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LEADERS IN SOIL AND GROUND WATER REMEDIATION
In-Situ / Ex-Situ / PRB's / UST Removal / Spill Response / ESA's
INDUSTRIAL TCE SITE
BRAMPTON, ONTARIO
Situation:
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Approximately 4250 m3 of TCE impact in the soil and groundwater.
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After years of manufacturing, TCE had migrated into the soil and groundwater underneath the building and areas under the parking lot and driveways.
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Active business on site. Remediation plan must allow for business to continue operations during implementation.
Task:
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Remediate soil and groundwater in-situ as to not interrupt day to day operations of business.
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Install injection wells inside building and operating parking and drive areas using flush mount caps and removable injection heads.
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Inject organic carbon substrate with micronized ZVI into impacted areas.
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Ensure site is clean to ensure minimal disruption to operations.
Result
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Business continued operations uninterrupted during injection process.
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Consultant confirmed amendment had spread throughout contaminant zone.
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3 of 4 monitoring wells met MECP Table 3 standards between 6 and 24 months.
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Few residual daughter compounds in select monitoring wells at 24 months.
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Reducing conditions still active in substrate at 24 months.
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Engineering Consultant remarks at 24 month monitoring event; “Overall the results are again very positive. We are seeing VOC concentrations decrease significantly at the Site.”
(GHD Report 24 Month Performance Monitoring Result)
OIL SPILL IN BEDROCK
BROCKVILLE, ONTARIO
Situation:
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Approximately 600 litres of heating fuel discharged from the holding tank inside the garage adjacent to the home
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Oil had migrated beneath into the bedrock and made its way into the well which supplied the home
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Oil was seen coming from the taps of the home
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Three car garage, all brick, raised bungalow of approximately 4000 sq.ft built on top of limestone bedrock
Task:
Emergency cleanup procedures:
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Established clean water supply for residence and flushed plumbing system
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Used existing water well as recovery well and installed Mobile Treatment Unit (MTU) to establish hydraulic containment
Use Chemical Oxidation using Stabilized Hydrogen Peroxide:
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Used BIM200 to remediate impacted concrete floor
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Installed screened wells along perimeter of impacted zone
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Installed injection point at source of impact
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Installed injection system connecting all wells
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Used existing water well as recovery well, injected stabilized hydrogen peroxide into screened wells and drew towards recovery well
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Upon achieving MOE compliance standards, decommissioned former water well and installed new well up stream as water supply
Result
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Successful remediation achieved in 4 months
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Saved the home
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Home owners continued to live in the house during the remediation process
OIL SPILL UNDER HOME AND INTO LAKE
SAULT ST. MARIE, ONTARIO
Situation:
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Approximately 756 liters of heating fuel discharged from the holding tank located at the rear of the home
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Oil had migrated under the home, into an abandoned O-pipe, down to the beach and approximately 150ft. into Lake Superior under the ice.
Task:
Emergency cleanup procedures:
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Excavated immediate impact area
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Installed Mobile Treatment Unit to establish hydraulic containment
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Installed containment booms along lakeshore perimeter
Use Bio-Remediation and Mobile Treatment Unit (MTU) to achieve remediation:
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Applied BIM200 to foundation of home
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Used bio-remediation to remediate soil under home
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Bio-piled contaminated ice and snow. As the contaminated water thawed, run off was captured and pumped through MTU
Result
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Successful remediation achieved in 12 months
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Saved the home
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Home owners continued to live in the house during the remediation process
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Saved large trees on the property
OIL SPILL UNDER HOME
PIGEON, NOVA SCOTIA
Situation:
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Approximately 600 liters of heating fuel discharged from the holding tank adjacent to the home
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Contamination visible on the basement wall
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Oil had migrated beneath the concrete basement floor to opposite side of home
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Multiple additions and extensive renovations had been done on the house
Task:
Emergency containment and cleanup procedures:
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Excavated and removed immediate impact area down to the footing of the home
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Applied BIM200 to outside foundation wall, inside foundation wall, above concrete floor and under concrete floor
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Placed containment booms in nearby pond and capture dams in ditch as precautionary measures
Use Bio-Augmented Chemical Oxidation to Remediate Soil and Groundwater:
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Installed gravity feed injection tubes in area of former AST
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Inject Sodium Persulfate and Calcium Hydroxide oxidative amendment
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After initial oxidative event culture and inject hydrocarbon digesting microbes
Result
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Successful remediation of both soil and groundwater in 12 months
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Saved the home
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Family continued to live in the home during the remediation process
OIL SPILL UNDER HOME
MT. PEARL, NEWFOUNDLAND
Situation:
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Approximately 600 liters of heating fuel discharged from the holding tank adjacent to the home
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Oil had migrated beneath the footing of the home and partially under the basement floor
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Oil had migrated along the side and back of the home via weeping tile
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Large home with fully finished basement
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Soil impacts only. No groundwater impacts detected
Task:
Emergency containment and cleanup procedures:
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Excavated and removed immediate impact area down to the footing of the home
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Applied BIM200 to outside foundation wall, inside foundation wall and along weeping tile
Use Bio-Augmented Chemical Oxidation to Remediate Soil and Groundwater:
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Installed gravity feed injection tubes in area of former AST
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Inject stabalized hydrogen peroxide oxidative amendment
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After initial oxidative event culture and inject hydrocarbon digesting microbes
Result
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Successful remediation in 10 months
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No underpinning and saved the home
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Saved impact on neighbours property
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Family continued to live in the home during the remediation process
OIL SPILL UNDER HOME ON LAKE
HUNTSVILLE, ONTARIO
Situation:
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Approximately 900 liters of heating fuel discharged from the holding tank adjacent to the home
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Contamination was visible on the basement wall
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Oil had migrated beneath the concrete basement floor
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Property consisted of many mature trees. Steep slope toward the lakefront approximately 60 feet from the home.
Task:
Emergency cleanup procedures:
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Excavated and removed contaminated soil down to the footings of the home in impact area
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Installed a recovery well and Mobile Treatment Unit (MTU) to treat contaminated groundwater
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Placed containment booms in the lake to prevent further possible migration into the lake
Use Bioremediation and MTU to Remediate Site:
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Continued use of the MTU for groundwater remediation
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Removed section of basement concrete floor to gain access to the subfloor contamination
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Applied microbes and nutrients to degrade the contamination
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Monitored and maintained microbial remediation until compliance with MOE standards was achieved.
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Erected a retaining wall to prevent erosion where soil had been excavated, and placed an insulated winterized cover over the exterior impact zone so that bioremediation can continue during the winter months
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Upon achieving MOE compliance standards, made necessary repairs to basement floor and landscaped exterior impact are
Result
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Successful remediation achieved in 14 months
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Saved the home
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Saved the mature trees and picturesque landscape
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No disturbance to the lake shore
