OIL SPILL IN BEDROCK

BROCKVILLE, ONTARIO
Situation:​
  • Approximately 600 litres of heating fuel discharged from the holding tank inside the garage adjacent to the home

  • Oil had migrated beneath into the bedrock and made its way into the well which supplied the home

  • Oil was seen coming from the taps of the home

  • Three car garage, all brick, raised bungalow of approximately 4000 sq.ft built on top of limestone bedrock

 
Task:
Emergency cleanup procedures:
  • Established clean water supply for residence and flushed plumbing system

  • Used existing water well as recovery well and installed Mobile Treatment Unit (MTU) to establish hydraulic containment

 
Use Chemical Oxidation using Stabilized Hydrogen Peroxide:
  • Used BIM200 to remediate impacted concrete floor

  • Installed screened wells along perimeter of impacted zone

  • Installed injection point at source of impact

  • Installed injection system connecting all wells

  • Used existing water well as recovery well, injected stabilized hydrogen peroxide into screened wells and drew towards recovery well

  • Upon achieving MOE compliance standards, decommissioned former water well and installed new well up stream as water supply

 
Result
  • Successful remediation achieved in 4 months

  • Saved the home

  • Home owners continued to live in the house during the remediation process

OIL SPILL UNDER HOME AND INTO LAKE

SAULT ST. MARIE, ONTARIO
Situation:​
  • Approximately 756 liters of heating fuel discharged from the holding tank located at the rear of the home

  • 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:
  • Excavated immediate impact area

  • Installed Mobile Treatment Unit to establish hydraulic containment

  • Installed containment booms along lakeshore perimeter

 
Use Bio-Remediation and Mobile Treatment Unit (MTU) to achieve remediation:
  • Applied BIM200 to foundation of home

  • Used bio-remediation to remediate soil under home

  • Bio-piled contaminated ice and snow.  As the contaminated water thawed, run off was captured and pumped through MTU

 
Result
  • Successful remediation achieved in 12 months

  • Saved the home

  • Home owners continued to live in the house during the remediation process

  • Saved large trees on the property

OIL SPILL UNDER HOME

PIGEON, NOVA SCOTIA
Situation:​
  • Approximately 600 liters of heating fuel discharged from the holding tank adjacent to the home

  • Contamination visible on the basement wall

  • Oil had migrated beneath the concrete basement floor to opposite side of home

  • Multiple additions and extensive renovations  had been done on the house

 
Task:
Emergency containment and cleanup procedures:
  • Excavated and removed immediate impact area down to the footing of the home

  • Applied BIM200 to outside foundation wall, inside foundation wall, above concrete floor and under concrete floor

  • Placed containment booms in nearby pond and capture dams in ditch as precautionary measures

 
Use Bio-Augmented Chemical Oxidation to Remediate Soil and Groundwater:
  • Installed gravity feed injection tubes in area of former AST

  • Inject Sodium Persulfate and Calcium Hydroxide oxidative amendment

  • After initial oxidative event culture and inject hydrocarbon digesting microbes

 
Result
  • Successful remediation of both soil and groundwater in 12 months

  • Saved the home

  • Family continued to live in the home during the remediation process

OIL SPILL UNDER HOME

MT. PEARL, NEWFOUNDLAND
Situation:​
  • Approximately 600 liters of heating fuel discharged from the holding tank adjacent to the home

  • Oil had migrated beneath the footing of the home and partially under the basement floor

  • Oil had migrated along the side and back of the home via weeping tile

  • Large home with fully finished basement

  • Soil impacts only.  No groundwater impacts detected

 
Task:
Emergency containment and cleanup procedures:
  • Excavated and removed immediate impact area down to the footing of the home

  • Applied BIM200 to outside foundation wall, inside foundation wall and along weeping tile

 
Use Bio-Augmented Chemical Oxidation to Remediate Soil and Groundwater:
  • Installed gravity feed injection tubes in area of former AST

  • Inject stabalized hydrogen peroxide oxidative amendment

  • After initial oxidative event culture and inject hydrocarbon digesting microbes

 
Result
  • Successful remediation in 10 months

  • No underpinning  and saved the home

  • Saved impact on neighbours property

  • Family continued to live in the home during the remediation process

OIL SPILL UNDER HOME ON LAKE

HUNTSVILLE, ONTARIO
Situation:​
  • Approximately 900 liters of heating fuel discharged from the holding tank adjacent to the home

  • Contamination was visible on the basement wall

  • Oil had migrated beneath the concrete basement floor

  • Property consisted of many mature trees.  Steep slope toward the lakefront approximately 60 feet from the home.

 
Task:
Emergency cleanup procedures:
  • Excavated and removed contaminated soil down to the footings of the home in impact area

  • Installed a recovery well and Mobile Treatment Unit (MTU) to treat contaminated groundwater

  • Placed containment booms in the lake to prevent further possible migration into the lake

 
Use Bioremediation and MTU to Remediate Site:
 
  • Continued use of the MTU for groundwater remediation

  • Removed section of basement concrete floor to gain access to the subfloor contamination

  • Applied microbes and nutrients to degrade the contamination

  • Monitored and maintained microbial remediation until compliance with MOE standards was achieved.

  • 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

  • Upon achieving MOE compliance standards, made necessary repairs to basement floor and landscaped exterior impact are

 
Result
  • Successful remediation achieved in 14 months

  • Saved the home

  • Saved the mature trees and picturesque landscape

  • No disturbance to the lake shore

INDUSTRIAL TCE SITE

BRAMPTON, ONTARIO
Situation:​
  • Approximately 4250 m3 of TCE impact in the soil and groundwater.

  • After years of manufacturing, TCE had migrated into the soil and groundwater underneath the building and areas under the parking lot and driveways.

  • Active business on site.  Remediation plan must allow for business to continue operations during implementation.

 
Task:
  • Remediate soil and groundwater in-situ as to not interrupt day to day operations of business.

  • Install injection wells inside building and operating parking and drive areas using flush mount caps and removable injection heads.

  • Inject organic carbon substrate with micronized ZVI into impacted areas.

  • Ensure site is clean to ensure minimal disruption to operations.

 
Result
  • Business continued operations uninterrupted during injection process.

  • Consultant confirmed amendment had spread throughout contaminant zone.

  • 3 of 4 monitoring wells met MECP Table 3 standards between 6 and 24 months.

  • Few residual daughter compounds in select monitoring wells at 24 months.

  • Reducing conditions still active in substrate at 24 months.

  • 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)

© 2020 by Golden Environmental Services Inc.