Following the completion of intrusive test pit investigations on a 3,000 km2 piece of land formerly used for nuclear weapons testing, Kleinfelder assisted our client to identify, scope, and develop a remediation action plan (RAP) to achieve a safe and ecologically sound outcome for the client, the land, and the Traditional Owners.

Remediation Options

Working collaboratively with the client and the Traditional Owners (Maralinga Tjarutja), a remediation options assessment (ROA) was developed using multi-criteria analysis based on the investigation results and risk register. The ROA was used to provide a cost estimate and cost benefit analysis for the remediation project, estimated around $28 million. All parties agreed to a comprehensive and fully endorsed remediation action plan (RAP) for Maralinga and Emu Fields.

Refining the Remediation Plan

Recognising the arid conditions of the site and the anticipated cost implications on the remediation plan, a water resources management plan was developed for use throughout the remediation works.

An early-stage geographic information system (GIS) database was continually developed to support the ongoing project. This included the addition of data-collection applications, webmaps and dashboards, and a GIS StoryMap to serve as a public portal for site information.

Project Results

Utilising the information detailed in the Kleinfelder-developed Debris Pit Risk Register and adopting the remediation options outlined, the project has now moved to the remediation stage.

Kleinfelder has been retained to provide Technical Advisor guidance and GIS support, leveraging the database developed throughout the project.

Project Details

Location:
Maralinga, South Australia

Owner:
Commonwealth Department of Industry, Science, Energy and Resources (DISER)