Environmental Site Investigations
EESI’s Environmental Site Investigations provide you with comprehensive assessments of your site prior to development, enabling you to identify existing and potential environmental contamination in advance of any construction activity.
Giving you a holistic understanding of your site’s environmental conditions, ESIs allow you to develop projects that are environmentally friendly and protect public health & safety.
Protecting Human Health & the Environment through Comprehensive ESI Analysis
A Site Investigation is conducted through a process of data collection and analysis, which includes sampling and laboratory testing of soil, soil vapour, groundwater, air, and surface water.
The results of the analysis are used to identify potential sources of contamination, assess the risks associated with contamination and provide possible solutions for addressing any contamination. This information helps to inform decisions about how to design, operate and maintain the site in a manner that is protective of human health and the environment.
Conducting accurate Site Investigations is key, as poor assessment can lead to two things: data gaps, resulting in greater liability for the land owner or purchaser, or overestimation of environmental risks, resulting in unnecessary regulatory reporting and remediation.
Our Environmental Site Investigation services include:
- Preliminary Site Investigations (PSIs)
- Detailed Site Investigations (DSIs)
- Environmental Due Diligence assessments for the purchase or divestment of property
- General soil and groundwater assessments
- Environmental monitoring
- Waste characterisation
- Site management plans
- Environmental management plans
Cost–Effective and Timely Site Investigation Solutions
As the longest operating contaminated land specialist in Australia, we have a trove of environmental data which we can draw on to better understand environmental site settings to ensure a more targeted investigation and accurate fees.
As a result of our spread of offices, relationships with our subcontractors and streamlined business model, we are able to deliver assessments on property portfolios with a large geographical spread in short time frames.
Helping You Meet Regulatory Requirements with Ease
Our team of expert environmental scientists and engineers are highly trained and experienced in all aspects of environmental site investigations and remediation, from preliminary investigations through to the completion of a detailed Human and Environmental Risk Assessment (HERA), Remediation Action Plan (RAP) and Remediation and Validation Report. We work closely with you to deliver a cost–effective and timely solution that meets your needs and regulatory requirements.

Benefits of Environmental Site Investigations with EESI
- Understand and develop strategies to reduce the risk of contamination impacting on human health and the environment before you begin construction.
- Cost–effective and data driven solutions to meet your needs and regulatory requirements.
- Work with our highly trained and experienced environmental scientists throughout every stage of investigation.
