Comprehensive Geotechnical, Environmental, and Hydrogeological Site Investigations Including Groundwater and Surface Impact Assessment
LOCAL: IRT WOONONA NSW 2517
DATE: DEC 2023 TO JUN 2025
Project Title:
Comprehensive Geotechnical, Environmental, and Hydrogeological Site Investigations Including Groundwater and Surface Impact Assessment
Project Description:
This project involved an integrated suite of geotechnical, environmental, and hydrogeological investigations to support the planning, environmental approval, and future development of the subject site. The scope was designed to deliver a thorough understanding of subsurface conditions, assess contamination risks, and evaluate potential impacts on surrounding water resources—both groundwater and surface water.
The geotechnical component of the investigation included borehole drilling, soil sampling, standard penetration testing (SPT), and laboratory analysis to determine soil classification, strength parameters, and bearing capacity. These findings were essential in informing foundation design, slope stability considerations, and construction feasibility.
The environmental investigation focused on the identification and characterisation of contaminated soils and groundwater, in accordance with applicable regulatory frameworks such as the National Environment Protection Measure (NEPM) and relevant state-based guidelines. Targeted sampling and laboratory testing were conducted to assess the presence of heavy metals, hydrocarbons, volatile organic compounds (VOCs), and other contaminants of concern.
A detailed hydrogeological assessment was carried out to characterise the local groundwater regime, including flow direction, recharge potential, seasonal variation, and connectivity with surface water features. As part of this assessment, the potential impacts of the proposed development on groundwater quality and surface water bodies were analysed. This included evaluating construction-related risks such as dewatering, groundwater drawdown, contaminant migration, and stormwater runoff impacts.
The combined results of these investigations provided key input for site risk assessments, environmental management planning, and the design of mitigation measures to ensure compliance with planning and environmental regulations. The findings supported informed decision-making by stakeholders and authorities and contributed to the sustainable and responsible development of the site.
