160,000 contaminated sites
Did you know? Australia has an estimated 160,000 contaminated sites. In South Australia, the EPA holds information on almost 2,200 sites that have been listed on the Public Register.
How much does it cost to clean contaminated soil?
Blending contaminated soil with clean soil can cost up to $15,000, while treating soil with innovative treatment technologies can range from $50,000 to $100,000 per acre-foot. Remediating soil isn’t necessarily easy or cheap, but remediated soil prevents long-term, detrimental effects on our ecosystem.
How is contaminated land treated?
Options for treating contaminated soil include:
- Biological treatment/bioremediation uses bacteria to break down substances in the soil.
- Chemical oxidation converts contaminated soils into non-hazardous soils.
- Soil stabilisation involves the addition of immobilizing agents to reduce a contaminants’ leachability.
What is considered contaminated soil?
Soil contamination occurs when hazardous chemicals are buried or spilled or have migrated into uncontaminated soil. Contamination can take place during improper disposal of hazardous chemicals, during the application of pesticides and fertilizers, or through chemical and industrial processes.
What toxins are present in Australia?
Coal-fired power stations are a big contributor to air pollution in Australia and the biggest sources of nitrogen oxides (NOx) and sulfur dioxide (SO2) in the country. We know that at least 279 people die prematurely each year in NSW as a result of toxic air pollution from the state’s five coal-fired power stations.
What are the most common soil contaminants?
Common contaminants in urban soils include pesticides, petroleum products, radon, asbestos, lead, chromated copper arsenate and creosote. In urban areas, soil contamination is largely caused by human activities.
How long does it take to fix contaminated soil?
We define short term as soil remediation that will take less than 12 months between placing the first materials on the liner until the job is completed. Long term is where the soil remediation will take longer than 12 months, or if a permanent installation is required.
How expensive is bioremediation?
Cost: Typical costs for enhanced bioremediation range from $30 to $100 per cubic meter ($20 to $80 per cubic yard) of soil. Factors that affect cost include the soil type and chemistry, type and quantity of amendments used, and type and extent of contamination.
What happens if land is contaminated?
There may be indirect effects on users such as damage to buildings. Substances can be washed out of soil (leaching) to pollute groundwater, rivers or ponds. Some contaminants may be corrosive, and some can cause explosion or fire.
Who is responsible for contaminated land?
Once it has been established that the land is classified as contaminated, there will be a responsibility for the relevant person to clean up, i.e. remediation. The Environmental Protection Act states that the responsibility for cleaning up contaminated land is generally the person who caused the contamination.
How do you know if land is contaminated?
Land can only be determined as contaminated land if all three source, pathway and receptor are present. This is known as a ‘pollution linkage’ or a ‘significant pollution linkage’ if the risk is considered significant. The site cannot be causing harm and should not therefore be classified as being contaminated land.
How do you tell if your soil is contaminated?
The only sure way to tell if soil is contaminated is to sample the soil and have a certified laboratory test it….Soil Contamination Inspection
- The primary source of lead contamination in soil is from paint that contains lead.
- Arsenic is another contaminant that is commonly found in residential soil.
What are the regulations for contaminated sites in Australia?
The majority of Australian states and territories have developed legislation, regulations and guidelines for the management of contaminated sites in accordance with the Commonwealth framework. This includes a requirement to undertake environmental audits on certain projects to meet the standards of the regulator (e.g. EPA) or council.
How do I report a known or suspected contaminated site?
To report a known or suspected contaminated site: Complete and sign a Form 1 268 KB and submit to DWER General information on the Department’s regulatory role and the timeframes for assessments and determinations is outlined in the Department of Water and Environmental Regulation – Regulatory Services Factsheet.
Which states in Australia have legislation relating to contaminated land?
New South Wales (NSW) and Western Australia are the only states that have legislation specifically relating to contaminated land, while the rest of Australia’s states and territories regulate the issue with more general environmental protection and management Acts and subordinate legislation.
What is the Environmental Audit for contaminated land?
The environmental audit system for contaminated land provides a mechanism for assuring planning and responsible authorities (eg. local councils), landholders and other stakeholders, that a potentially contaminated site is suitable for use. This is particularly relevant when a development occurs or if a change in land use is proposed.
