Contaminated Land Assessment & Remediation NSW

Confluence Environmental completed a Detailed Site Investigation for a proposed mixed-use development in NSW. The investigation assessed multiple Areas of Environmental Concern through targeted soil, surface water and sediment sampling, addressing potential contamination associated with historical land use and site development activities. The investigation identified no contamination constraints requiring remediation and supported the suitability of the site for the proposed development from a contaminated land perspective.

Redevelopment of previously developed land can introduce uncertainty around historical fill, building materials and legacy contamination. Confluence Environmental undertook a targeted Detailed Site Investigation for a proposed commercial development in regional NSW, focusing on the areas and contaminants most relevant to the future land use. The investigation provided the evidence needed to define the remaining contamination risks and establish a practical pathway for the site to progress.

Legacy industrial activities, historical filling and former fuel infrastructure can create complex contamination risks when land is proposed for redevelopment. Confluence Environmental undertook a Detailed Site Investigation for a proposed industrial development in regional NSW, incorporating targeted assessment of soil and surface water to characterise the identified Areas of Environmental Concern. The investigation was designed to resolve key data gaps and provide a clear technical basis for the site’s ongoing development and management.

Large-scale renewable energy projects can present complex contamination and naturally occurring mineral risks across multiple active work areas. Confluence Environmental has supported a major wind farm development in regional NSW through targeted investigation, soil and rock characterisation, air monitoring and the development of risk-based management strategies for naturally occurring asbestos. The work has provided a defensible technical basis for managing identified risks while supporting the safe and continued progression of construction activities.

Operational commercial sites can present investigation constraints where existing buildings and infrastructure limit access to potential contamination sources. Confluence Environmental undertook a staged Detailed Site Investigation for a storage facility on the NSW Central Coast, combining accessible-area investigation with a strategy for further assessment following demolition. The approach provided a practical basis for progressing the development while clearly defining the remaining contamination data gaps and how they would be addressed.

Operational commercial sites can present contamination assessment challenges where buildings and infrastructure limit access to parts of the property. Confluence Environmental completed a Preliminary Site Investigation for a storage facility on the NSW Central Coast, identifying the key Areas of Environmental Concern, access limitations and potential contamination risks relevant to the proposed redevelopment. The assessment established the Conceptual Site Model and provided the basis for a staged investigation strategy as the site became progressively accessible.

Planning for future residential development requires early consideration of historical land use and potential contamination constraints. Confluence Environmental completed a Preliminary Site Investigation for a proposed residential rezoning project on the NSW Central Coast, assessing potential risks associated with historical site activities, imported fill and the broader environmental setting. The assessment established the Conceptual Site Model and provided the technical basis for progressing the planning proposal and identifying any further investigation required at subsequent development stages.

Industrial precincts can present contamination risks even where potentially contaminating activities have not occurred directly on the site. Confluence Environmental completed a Preliminary Site Investigation for a proposed commercial development in Port Kembla, NSW, identifying potential risks associated with historical industrial emissions, hazardous building materials and localised hydrocarbon impacts. The assessment established the Conceptual Site Model and provided the basis for targeted further investigation and management to support the proposed development.

Construction and redevelopment projects can generate surplus soils requiring assessment before they can be reused or lawfully disposed of. Confluence Environmental completed a waste classification and reuse assessment for several soil stockpiles at a site in Sydney, characterising the materials to determine their appropriate management pathway. The assessment provided a clear basis for segregation, reuse where suitable and lawful off-site disposal of material requiring removal.

Redevelopment projects can generate surplus soils that require assessment before they can be reused or transported off site. Confluence Environmental completed an Excavated Natural Material assessment for approximately 140 m³ of soil associated with a residential development in Killingworth, NSW, characterising the material against the requirements of the relevant resource recovery framework. The assessment determined the appropriate management pathway for the material and provided the project team with a clear basis for its subsequent handling and disposal.

Conversion of previously developed recreational land to a campground required assessment of potential contamination associated with historical site activities and former fuel infrastructure. Confluence Environmental completed a Preliminary Site Investigation for the proposed development in Darawank, NSW, identifying the former underground petroleum storage system as the principal residual contamination uncertainty. The assessment found no evidence of widespread shallow soil contamination and established the basis for targeted further investigation of the former fuel storage area to support the proposed land use.