Environmental & Remediation

9th Ave U/G Tank Removal

Ironclad was acting as subcontractor for PCL Construction when an abandoned underground fuel tank was discovered on a project directly adjacent to the Elbow River in Calgary, Alberta that was leaking and required immediate removal and remediation.

KEY DETAILS

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Contract Value

$1,100,905

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Project Owner

The City of Calgary

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Completion Date

July 2021

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Project Role

Subcontractor

Scope of Work

Removal of an underground fuel storage tank with disposal at landfill and remediation of project site from leaked kerosine that impacted adjacent soils.

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Resources & Challenges

Total Crew: 6 Persons

Equipment Used::
‍2 Excavators, 1 Loader, 1 Skidsteer, 5 Highways Trucks.

Challenges:
‍The underground storage tank was unexpectedly discovered during normal excavation operations and required immediate action to keep the project on track, which had leaked kerosene into the soils adjacent to the Elbow River.

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Project Timeline

// May 2023

Drilling & Pressure Grouting

Ironclad completes the grout curtain in bedrock that required 46 holes including 450 linear meters of drilling and 8,150 liters of pressure grouting required to complete this scope.

// May 2024

Sheet Pile Core Wall & Concrete Work

Ironclad completes 3,200 m2 of sheet pile core wall built on and within the confines of bedrock that required 420 m3 of reinforced cast-in-place concrete.

// July 2024

Embankment Structure

Ironclad completes the rock embankment structure that has a total height of 50 meters and required 180,000m3 of rock backfill obtained from the onsite blasting operations required for the spillway.

// September 2024

Spillway and Concrete Work

Ironclad completes the diversion spillway that is drilled  and blasted into the bedrock proximate to the embankment structure on the east side. The work required 109,000 m3  of drill and blast rock excavation and 352 m3 of reinforced cast-in-place concrete.