Environmental Services

A Preliminary Site Investigation (PSI) is the first step in assessing the potential for contamination to be present on a Site. A PSI involves gathering historical information about the site, conducting visual inspections, and if required, performing initial environmental sampling to identify any areas of concern. The purpose of a PSI is to assess the overall environmental condition of the Site and determine whether further investigation (such as a Detailed Site Investigation) is necessary.

A Detailed Site Investigation (DSI) is a comprehensive investigation of a site following a PSI. The purpose of a DSI is to thoroughly assess the extent and nature of contamination identified during the PSI. This includes more extensive soil, groundwater, and potentially air sampling compared to a PSI with the objective being to delineate the horizontal and vertical extent of contamination. This investigation provides detailed information necessary to evaluate the risks associated with the site and to develop effective remediation strategies.

A Remedial Action Plan (RAP) serves as the detailed road-map for managing site contamination based on the comprehensive analysis provided by the DSI. The RAP provides detailed strategies tailored to the specific contamination issues identified during the DSI. The plan details the steps necessary for implementing the remediation strategies and outlines the process for monitoring the effectiveness of the remediation efforts and includes validation criteria to confirm that the site has been successfully remediated.

An Acid Sulfate Soil Assessment is undertaken to identify and manage the risks associated with soils that can produce or have already produced sulfuric acid when exposed to air, particularly in coastal and low-lying areas. This assessment is critical for preventing environmental damage to ecosystems, infrastructure, and water quality. The assessments typically involve a review of historical data, environmental conditions, soil sampling, laboratory analysis, and the development of management plans to mitigate any risks associated with acid sulfate soils (ASS).

Salinity and Aggressivity Assessments are essential processes for evaluating the potential corrosive effects of soil and groundwater on construction materials (particularly steel and concrete), infrastructure, and vegetation. These assessments are particularly important in areas where high salt content in soils or water can pose risks to the longevity and safety of structures. The assessments involve a review of historical data,environmental conditions, soil sampling, laboratory analysis, and the development of mitigation strategies to manage the identified risks.

An Imported Fill Assessments is undertaken to ensure that the materials brought onto a site for construction or landscaping meet environmental standards and are free from contaminants. These assessments are essential for ensuring compliance with environmental regulations, and preventing future liabilities associated with contaminated fill. The assessment process typically involves a thorough evaluation of the source of the fill material and if necessary soil sampling and laboratory analysis to confirm the materials suitability for the proposed use.

Groundwater can become contaminated from a variety of sources, posing significant risks to both human and ecological health. Groundwater monitoring is critical for assessing and managing the quality of groundwater resources. Ground water monitoring is essential for ensuring that groundwater remains uncontaminated, supporting safe construction practices, and meeting regulatory standards.

Waste classification is a critical process in environmental management, ensuring that all waste materials generated during construction, demolition, or industrial activities are properly categorized for disposal or reuse. Accurate classification helps in complying with environmental regulations, reducing disposal costs, and minimizing the environmental impact of projects. Our Waste Classification Assessments include(but are not limited to):

• Virgin Excavated Natural Material (VENM) Classification
• Excavated Natural Material (ENM) Classification
• Excavated Public Road Material (EPRM) Classification
• General Solid Waste (GSW) Classification
• Restricted Solid Waste (RSW) Classification
• Hazardous Solid Waste (HSW) Classification
• Resource Recovery Exemptions.