The reuse or transfer of contaminated brownfield industrial sites demands qualified environmental management techniques and state-of-the-art treatment technologies to overcome challenging and complex engineering and risk profiles. Through Grange Environmental Services – a Delta Group company – CMA Contracting has the capacity to integrate highly specialist services for total and/or partial site remediation and rehabilitation:

Site Assessments

Site assessments are guided by the standards contained within the Commonwealth National Environment Protection (Assessment of Site Contamination) Measure, relevant Australian Standards and State/Territory legislative frameworks.

Our understanding of contaminants and their impact on building and construction projects span all forms of past, current and future use, while incorporating heavy and light industrial project sites. A detailed and carefully phased assessment process allows us to identify all forms of contamination, including soil classification, and to develop site specific remediation and rehabilitation plans that will facilitate the transfer and re-use of land:

1. Desk Top Analysis

Careful and comprehensive examination of site history and former use, as far back as public documentation and records:

• Certificates of title
• Site image analysis, including aerial
• Review of EPA registers
• Identify contaminants of primary concern
• Develop site sampling plan including targeted testing

2. Intrusive Site Assessment

Boots-on-the-ground site analysis in accordance with the NEPM to determine actual or potential risks to human health, the environment and the project, including:

• Data collection and reporting, including independent laboratory analysis
• Soil classifications
• Ground water monitoring, depending on project scope
• Define extent of remediation or further assessment, if required

3. Site Remediation & Rehabilitation

Detailed reporting and project planning, including consultancy services for the production of environmental management procedures to underpin future building and construction projects and financial risk analysis:

• Complete on site remediation to achieve soil/groundwater status suitable for end use
• Classification reporting, including offsite waste management and disposal
• Complete survey modelling
• Options for potential reuse / waste minimisation
• In-situ stabilisation
• Chemical treatment and stabilisation
• Validation testing
• Screening and abatement
• Barrier installation and capping
• On site containment and construction of containment cells
• PASS or ASS treatment and neutralisation
• Data management, reporting and materials tracking protocols
• Site rehabilitation measures
• Bioremediation and landfarming
• Completion of clean up scope
• Backfilling, compaction, contouring and drainage
• Landscaping and revegetation
• Final Site Condition Reporting