Site Investigation and Remediation
IN Australia
Tell Me More

Geosyntec Services

International leaders, local partners in Australia and New Zealand.

Geosyntec scientists and engineers have pioneered advances in bioaugmentation, vapour intrusion, Self-sustaining Treatment for Active Remediation (STAR), other low-cost in situ environmental technologies, and advances in many other fields. Geosyntec brings advanced remediation solutions to the most challenging sites in Australia and New Zealand through new and existing partnerships with local scientists, engineers, and consulting professionals.

A reliable partner for creative, cost-effective, and successful solutions, we bring a total environmental management approach to remediation, where science, policy, external and internal drivers, and all stakeholders are considered in the development of a best-value outcome for each and every client in each and every project. We set the standard for engineered solutions, scientifically rigourous investigation, and effective risk management.

Services Overview

Geosyntec Consultants is a specialised consulting and engineering firm with offices in Australia that work with clients to solve complex problems for our clients.


Bioremediation of contaminated sites can solve certain complex groundwater and soil contamination issues at lower costs than competing traditional approaches.

Vapour Intrusion

For more than 20 years, Geosyntec professionals have pioneered the assessment and management of vapour intrusion through practice and applied research.

The PFAS Conundrum

Investigation and management of PFAS sites requires an innovative, adaptable and educated team, involved in current research, and not tied to a one-size-fits-all approach.


Offering a broad range of sediment management capabilities, we specialise in remedies for sites with contaminated sediments and surface waters.


Our consultants provide environmental consulting, remediation, contracting and auditing aspects for a number of types of industries.


From our experience in the mining industry, we have become well familiar with the unique challenges faced by extracting surface and subsurface economic resources from various geologic media.

Our Team

Our team in Australia is part of a company with over 1,000 engineers and scientists around the globe.

Lange Jorstad, Ph.D.

Lange Jorstad has 20 years of experience in the management of both contaminated land and hydrogeological investigations, and specialist hydrogeological support for projects.
Learn more »

David Reynolds, Ph.D.

David Reynolds has extensive experience in the development and implementation of effective remediation and management strategies for complex and challenging contaminated sites.
Learn more »

Julie Konzuk, Ph.D.

Julie Konzuk has directed, managed, or provided specialist technical support for projects ranging from overall strategy development and site investigation to laboratory treatability studies.
Learn more »

Paul Nicholson

Paul Nicholson is a senior environmental engineer with over 14 years of experience in environmental consulting with a focus on assessing and mitigating human health risks.
Learn more »

Career Opportunities

Geosyntec has built a record of successful client service by attracting some of the most creative scientists and engineers from the graduate programs of leading universities around the world. Join our team and develop your environmental career in Australia.

Contact Us

Subscribe to our mailing list

* required

Lange Jorstad
0447 249 250

David Reynolds
0478 187 627