Contaminated Land Remediation

Construction hasn’t always been environmentally focused with many of the sins of the past ending up in our soils. Some of these toxins include lead, petroleum, pesticides, naturally occurring chemicals and asbestos – often only discovering them during pre-development testing. With stricter and stricter environmental standards, remedying toxified soil is now one of the crucial first steps in construction projects.

There are various methods of ridding the soil of its contaminants ranging from thermal destruction to chemical stabilisation to bioremediation and disposal. Not all are appropriate for every project. It takes an experienced remediation company to know the difference.

Perfect Remediation and Refurbishment is the state’s foremost soil remediation contractor. With world class leadership, state-of-the-art systems and operational capabilities, Perfect has distinguished itself on every soil remediation project it has encountered since the group’s inception in 2009.

What We Can Do For You

Perfect Remediation and Refurbishment can offer the following contaminated land remedial solutions:

Hazardous and toxic waste removal
Hazardous waste management
Detailed site investigations
Remedial strategies and validations
Waste classification and soil management
Soil treatment processes

Within those solutions these are some of the following options:

Thermal desorption. This is where the soil is heated, directly or indirectly, to a significant enough temperature so that the contaminants seperate themselves from the solid medium.
Direct Thermal Destruction. This process uses heat to annihilate any impurities in the soil.
Pyrolysis is thermal decomposition at elevated temperatures in an inert atmosphere. It’s different to Direct Thermal Destruction in that it uses no oxygen.
The Chemical Stabilisation process involves adding emulsifiers, repellants and binders to modify the behaviour of the soil.
Chemical Oxidisation refers to a process whereby oxidants are utilised to help change harmful contaminants into less toxic ones.
Bioremediation. This is where living organisms, such as microbes and bacteria, remove contaminants from the soil.
Transportation and disposal. The contaminated material is excavated, trucked away and disposed of in line with government regulations.
Chemical fixation. This adds reagents or materials into the contaminated soil to form insoluble or hardly movable, low toxic matters so they can’t migrate to water or other organic material.

PRR believes it can bring the correct solution to virtually any soil remediation project. With the joint capabilities of decades of tier one construction, civil & demolition works, Perfect has the know-how, the systems, the leadership and the machinery to tackle anything sent our way. We’ve worked with multiple construction, government and industrial clients across an array of sectors in this exact space.

Featured Project

St. Joseph’s College, Hunter’s Hill

Client: FDC Construction

During the demolition and construction of the school’s new olympic swimming pool, thousands of tonnes of contaminated spoil had to be rectified. Perfect’s initial approach was lime dosing, a process whereby concentrated lime is added to the soil to rectify the pH level. This has the additional benefit of killing unwanted parasites. Using a 24t excavator and a rotary screening bucket attachment, the lime was blended with the soil. Ultimately it worked and the resultant soil was tested and declared safe, however the time was cost prohibitive and the decision was made for disposal. The soil was dug out and trucked to private clientele wanting clean fill.

Dyuralya Community Space, Waterloo

Client: Structus

When soil testing revealed asbestos and concentrates of lead in this soon-to-be vibrant community green space, there was only one solution: disposal. Under strict EPA regulations, the offending material was excavated, encapsulated and trucked to an asbestos waste facility in Eastern Creek.

What We Can Do For You

Perfect Remediation and Refurbishment can offer the following contaminated land remedial solutions:

Hazardous and toxic waste removal

Hazardous waste management

Detailed site investigations

Remedial strategies and validations

Waste classification and soil management

Soil treatment processes

Within those solutions these are some of the following options:

Thermal desorption. This is where the soil is heated, directly or indirectly, to a significant enough temperature so that the contaminants seperate themselves from the solid medium.

Direct Thermal Destruction. This process uses heat to annihilate any impurities in the soil.

Pyrolysis is thermal decomposition at elevated temperatures in an inert atmosphere. It’s different to Direct Thermal Destruction in that it uses no oxygen.

The Chemical Stabilisation process involves adding emulsifiers, repellants and binders to modify the behaviour of the soil.

Chemical Oxidisation refers to a process whereby oxidants are utilised to help change harmful contaminants into less toxic ones.

Bioremediation. This is where living organisms, such as microbes and bacteria, remove contaminants from the soil.

Transportation and disposal. The contaminated material is excavated, trucked away and disposed of in line with government regulations.

Chemical fixation. This adds reagents or materials into the contaminated soil to form insoluble or hardly movable, low toxic matters so they can’t migrate to water or other organic material.