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We manage investigations on Underground Storage Tanks (UST) and are specialists in the identification and remediation of contaminated soil and water caused by leaking underground storage tanks.

Our team of Environmental Scientists have extensive experience in dealing with sites including petrol stations and fuel storage sites, laundries, gas works, industrial & commercial warehouses, pharmaceutical facilities, landfill and waste disposal sites.

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Our team of Environmental Scientists have extensive experience in dealing with liquid waste water and effluent management and reuse.

Our team can conduct site testing, modelling and designing. Using the sophisticated software tool MEDLI ® (“The Model for Effluent Disposal Using Land Irrigation”)

MEDLI software is a Scientific based dynamic tool offering highly sustainable effluent treatment and irrigation solutions and is the favourable method with the Queensland regulators, Department of Environment and Science.

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SESL’S team of Environmental Scientists conduct site investigations to assess environmental impacts from natural and human activities.

Preliminary Site Investigations (often referred to as Phase 1 investigations) identify the potential for contamination to exist at a site for regulatory compliance, due diligence, property acquisition, development application approvals and site rezoning.

Detailed Site Investigations (often referred to as Phase 2 investigations) are undertaken to delineate any contamination present at a site through field measurements and the sampling and analysis of surface and groundwater, soils and soil vapour.

Using the information obtained in site-specific contamination assessments, such as those listed above, SESL can prepare Remedial Action Plans to either remove, contain, treat, or manage harmful substances to ensure the site is suitable for the intended use without posing unacceptable risks to human health or the environment.

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Acid sulfate soils are typically safe when undisturbed and left in their natural condition. However, if they are excavated or drained, resulting in contact with oxygen present in the atmosphere, they can cause major damage to steel and concrete structures, and cause acidification which can have detrimental effects on plants, animals and waterways. For any planned construction or ongoing site management, it is critical that you know where they are, how to manage the risks they pose and what to do in the event that they are disturbed.

SESL Australia has a dedicated team of suitably-qualified Environmental Consultants capable of assessing land for acid sulfate soils and developing site-specific management plans. Our management plans are designed to be easy to read and ready for use by site staff or contractors.

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SESL Australia has a team of Environmental Consultants with extensive experience in conducting investigations of potentially contaminated land and groundwater.

We have over 30 years experience working with property owners, developers and investment groups, across Australia during land transactions.

Our team can conduct site testing, reporting and remediation and have extensive knowledge of methods.


  • Preliminary site investigations

  • Detailed site investigations

  • Groundwater investigations

  • Groundwater modelling

  • Development of Remediation Action Plans

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We can help you meet compliance requirements for managing hazardous material risks on your site or premises.

Our team of Environmental Scientists can conduct a hazardous materials survey and develop a Hazardous Material Management Plan to help mitigate any risk.

We work with property owners, developers and investment groups. With offices in Sydney, Melbourne, Brisbane and Canberra, we offer consistent quality and local knowledge of federal and state environmental legislation.

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