FEATUREd PROJECTS - BIO REMEDIATION

Welcome to in-situ bio remediation. We have successfully remediated numerous sites without digging up any foundations or underpinning any buildings.

By developing a unique vaccination and culturing process we have made bio remediation a powerful option for hydrocarbon clean up.

The harsh climate of Canada and soil depths traditionally limited bio remediation capabilities. Using soil preparation and oxidation techniques we have overcome such obstacles yeilding impressive success.

Browse a few of our case studies and see what in-situ bioremediation can do for you!

If you have any questions about the following projects or have questions regarding a project of your own please contact us anytime.

Vars Project

SITUATION

• Approximately 600 litres of fuel oil released from the storage tank located within the attached garage of the home. • The oil migrated into a floor drain in the garage, which leads into a drainage ditch.

TASK

• Install an MTU for ground water remediation and hydraulic containment. • Apply microbes and nutrients to degrade the contamination. • Monitor and maintain microbial remediation until tests show acceptable levels in accordance with the MOE.

RESULT

• Successful remediation in 7mths.

ALTERNATIVE TO BIOREMEDIATION

An alternative as presented by another environmental firm that had worked on the site prior to Golden was to level the garage, excavate the contaminated soil underneath the garage, excavate the soil in the ditch, replace all excavated soil with clean soil, and rebuild the garage.

White Pine Road Project

SITUATION

• Approximately 900 litres (full tank) of heating fuel leaked from the holding tank adjacent to the home. • Contamination was visible on the basement wall. • Field tests confirmed oil had migrated beneath the concrete basement floor. • The property is well treed and steeply sloped toward the lakefront, which is approximately 60 feet from the home.

TASK

Emergency cleanup procedures:

• Excavate and remove immediate impact area and faulty tank.• Install a recovery well and Mobile Treatment Unit (MTU) to recover and treat contaminated groundwater. • Place containment booms in the lake to prevent further possible migration into the lake.

Remediation Plan:

• Remove section of basement concrete floor to gain access to subfloor contamination. • Apply Golden Microbe Blend and nutrients to degrade contamination.• Monitor and maintain microbial remediation until tests show acceptable levels in accordance with the Ministry of the Environment (MOE). • Erect a retaining wall to prevent erosion where soil had been excavated, and place an insulated winterized cover over the exterior so that bioremediation can continue during the winter months.• Upon completion of the remediation process, reinstate the basement floors and walls that were removed, and backfill the excavated area.

RESULT:

• Successful in-situ remediation in 1yr. 2mths.

ALTERNATIVE TO BIOREMEDIATION

An alternative to in-situ bioremediation would be to excavate and dispose the contaminated soil and replace it with clean soil. This procedure would involve dismantling the home to excavate the contamination underneath, then rebuilding the home. The issue of the groundwater would still need to be dealt with.

Ferguson Falls Project

SITUATION

• Golden investigated the oil spill site on July 12, 2007. • It was noted that soil had been excavated from the impacted area at the back and the northeast side of the home, down to the foundation, in a remediation effort performed by an engineering firm prior to our arrival. • The investigation showed contamination had migrated to underneath the foundation. • Contamination was discovered in the dug well on the property during the investigation.

TASK

• Install an MTU to remediate the groundwater and ensure hydraulic containment. • Install injection tubes along the perimeter of the home for microbial injections. • Apply Golden Microbe Blend and nutrients to degrade the contamination. • Monitor and maintain microbial remediation until tests show acceptable levels in accordance with the MOE. • Upon completion of remediation, reinstate the section of concrete floor in the basement of the residence.

RESULT

• Successful remediation in 1yr.

ALTERNATIVE TO BIOREMEDIATION

As suggested by the engineering firm that had originated remediation efforts, an alternative would be to demolish the existing building, excavate the contaminated soil, backfill with clean soil, then reinstate the home. The cost for this procedure would be considerably high and prohibitive.

St. Josephs Island Project

SITUATION

• Approximately 250 litres of fuel oil released from the storage tank. • The impacted areas were the soil under the tank, the foundation wall, along a trough around the basement perimeter and in the sump hole. • The oil had soaked through the foundation wall.

TASK

• Excavate and dispose of the contaminated soil in immediate impact area. • Install Mobile Treatment Unit for ground water remediation and hydraulic containment. • Treat the foundation wall, basement floor, crawl space and soil with microbes. • Backfill the excavated area with clean soil.

RESULT

• Successful remediation in 4mths.

NOTE

The home had sentimental and historical value to the owner. Golden was able to save the field stone/concrete foundation which had been built by the owners grandfather.

ALTERNATIVE TO BIOREMEDIATION

Another proposal to in-situ bio-remediation was to underpin the house, dig out the contaminated soil and foundation and replace it with a new foundation and clean soil.

White Lake Project

SITUATION

• Approximately 11 – 15 litres of oil leaked from the connection line leading from the tank to the furnace. • Contamination was found on basement floor, and on the frame, drywall and insulation of basement wall.

TASK

• Remove framing, drywall and insulation from the contaminated wall. • Treat exposed wall for contamination with Golden Products Micro-50TM. • Treat basement floor for contamination with Golden Products Micro-50TM. • Test soil samples from subfloor to determine presence/absence of contamination and remediate if necessary. Estimated time for remediation process: Approximately 4 weeks

RESULT

• Testing showed no contamination in subfloor. • Successful remediation in 2 months.

NOTE

The actual time spent working on the site was approximately 4 weeks.

Forest Hill Estates Project

SITUATION

• Approximately 18 – 38 litres of oil leaked from holding tank. • Contamination found in soil below the tank.

TASK

• Extract soil samples to determine extent of contamination and concentration levels. • Apply Golden Microbe Blend and nutrients to degrade the contamination. • Monitor and maintain microbial remediation until tests show acceptable levels in accordance with the Ministry of the Environment (MOE). *The oil spill was minor and easily remediated, therefore timelines and costs were minimal and estimates were not provided.

RESULT

• The oil plume was determined to be approximately 0.2 meters in diameter to a depth of approximately 1.5 meters below ground surface. • Successful in-situ bioremediation in 1month.

ALTERNATIVE TO BIOREMEDIATION

An alternative to in-situ bioremediation would be to excavate and dispose of the contaminated soil and replace it with clean soil. This would have proven to be costly and precarious in this situation, as utility lines (i.e. hydro and water) are present in the area of contamination.