PROJECTS

CONTAMINATED LAND MANAGEMENT

Land Remediationx

SCOPE:
Land Remediation

CATEGORY:
Contaminated Land

LOCATION:
Mortlake, NSW

URBAN RENEWAL OF MORTLAKE POINT

EI prepared the Remedial Action Plan (RAP) and subsequently supervised the staged remediation, validation and environmental management works for the urban renewal of Mortlake Point. This was a 3 hectare (ha) site comprising over 35 commercial, industrial and older style fibro/brick houses and many below and above ground storage tanks within a former paint factory.

The RAP also considered Acid Sulfate Soils along the foreshore, the potential for gasworks waste in site fill and the presence of badly damaged asbestos sheeting and possible friable asbestos in pipework within the building fabric.

Remediation and validation of soil, soil vapour and groundwater is currently being conducted to enable the land to be used for multi-storey residential blocks with basement car parking and foreshore open space, following an independent audit by a NSW EPA accredited site auditor.

VALUE ADDED / BENEFICIAL OUTCOMES FOR CLIENT:

EI used its knowledge of the extensive number of chemicals used in historical paint factory operations to develop a conceptual site model for the complex, fractured bedrock environment, which allowed greater efficiencies in characterisation, remediation and validation of the site. EI also developed asbestos removal and environmental control plans to facilitate development consent.

Environmental Managementx

SCOPE:
Environmental Management

CATEGORY:
Contaminated Land

LOCATION:
Zetland, NSW

REMEDIATION OF FORMER MANUFACTURING SITE

With historical industrial uses including whitegoods manufacturing and metal foundry operations, the 2.5 ha former whitegoods manufacturing site was subject to impacts including chlorinated solvents and had been notified to the NSW EPA under Section 60 of the Contaminated Land Management Act 1997.

EI’s work included data gap closure investigations, active remediation & validation of impacted soil and groundwater, vapour intrusion modelling, natural attenuation assessment and development of Stage-specific EMPs for commercial, residential and recreational open space redevelopment.

The natural attenuation assessment is currently ongoing, and the existing groundwater monitoring dataset appears to support the feasibility of Monitored Natural Attenuation as an appropriate remediation strategy for low-level, residual groundwater concentrations.

VALUE ADDED / BENEFICIAL OUTCOMES FOR CLIENT:

Assisted in making the site suitable for the intended land uses, with Site Auditor sign-off and Council approval, which enabled project stages to be constructed sequentially with minimal delay. Also maintained communication with NSW EPA in compliance with regulatory requirements.

Remediation Planningx

SCOPE:
Remediation Planning

CATEGORY:
Contaminated Land

LOCATION:
Camellia, NSW

LAND REDEVELOPMENT FOR COMMERCIAL & RESIDENTIAL AREAS

This 6000 square metre former industrial site, which included a former James Hardie factory, Camellia Chemical factory and a solvent drum recycling facility, was to be redeveloped for commercial, residential and recreational uses with basement car parking.

With the goal of making the site suitable for the proposed land uses EI assessed soils, groundwater and geotechnical conditions and developed a preliminary RAP for the on-site encapsulation of over 70 000 cubic metres of buried, asbestos-containing materials and localised, TRH/PAHs-impacted clinker waste.

The remediation strategy included onsite bio-pile treatment of soils impacted with petroleum and VOCs. EI also provided technical inputs to the landfill cell design concept.

VALUE ADDED / BENEFICIAL OUTCOMES FOR CLIENT:

EI progressed the site characterisation process to enable RAP revisions and to better inform related disciplines and consenting authorities during the review and approval process.