There are a number of stages/phases of Environmental Site Assessments (ESA) starting from a preliminary assessment (referred to as Phase 1) to a more detailed assessment (Phase 2 ) which may include groundwater monitoring and or risk assessments. The framework for these types of assessments are detailed in the National Environment Protection (Assessment of Site Contamination) 1999, as amended.

Site Remediation

Remediation works occur where environmental risks to receptors are considered unacceptable.

There are many types of remediation methods/techniques that can be tailored to suit individual sites. A Remedial Action Plan is generally prepared prior to works being undertaken.

Edwards Environmental can undertake a particular stage of required works or manage the project. All relevant approvals and permits can be organised if required.

Edwards Environmental offer a broad range of experience and knowledge on site remediation and a solid understanding of the relevant legislation.

Wastewater Management

The purpose of a Land Capability Assessment (LCA) is to ensure that a site can sustainably manage wastewater within its boundaries. The assessment includes a site investigation, drilling of boreholes and soil sample collection and analysis.

Subsequently, a report is prepared and submitted to client. Generally 2-3 week turnaround but this can be fast tracked if urgent.

A Wastewater Feasibility Study is an assessment typically undertaken for proposed sub divisions. The objective is to demonstrate whether on site wastewater can be appropriately managed for each lot of the proposed sub-division.

Groundwater Monitoring

Edwards Environmental can assist in the development of groundwater monitoring programs, the construction of groundwater monitoring wells and undertake groundwater sampling.

Groundwater sampling may be required to:

  • Determine background groundwater quality
  • Classify relevant beneficial use of groundwater
  • Detect the presence, degree and extent of contamination.

Soil Validation & Characterisation Reports

Following environmental remediation works, soil and or water sampling are conducted to ensure an adequate clean-up has been achieved.

This is commonly referred to as a Validation Report.

A common example of this is following the removal of Underground Petroleum Storage Tanks (UPST).

In this example, soil samples are generally collected to demonstrate that the condition of the soils below and surrounding former UPST area are not contaminated and do not pose an environmental or human health risk.

The transport and disposal of contaminated soil from a site is regulated by EPA Victoria. There is a responsibility on the land owner/contractor to characterise the soil prior to offsite disposal.

There are three categories of soil contamination ranging from the highest-level risk of Category A, through to Category B & C.

Edwards Environmental can assist in the appropriate management of contaminated soils by collecting soil samples, and providing a Soil Characterisation Report.

Under certain circumstances, some soils may be suitable for onsite reuse.

For further information

Contact Edwards Environmental on 03 5406 0522.