Hydraulic Parameterisation (Packer Testing & Slug Testing)
Packer & Slug Testing
We measure how readily groundwater moves to de-risk design, dewatering and contamination projects. Our team applies two complementary field methods for fast, defensible permeability data.
Slug Testing
We briefly raise or lower the water level in a monitoring well and track the recovery to calculate hydraulic conductivity of the screened formation. It is quick, non-pumping and ideal in sands, silts and gravels. We use live-interface data loggers for both physical (solid-slug) and pressure (pneumatic) tests, enabling real-time QA and high-frequency early-time capture.
Packer Testing
In rock, we isolate short borehole intervals with inflatable packers and apply pressure to obtain interval-specific permeability, distinguishing transmissive fractures from tight matrix. Results support excavation inflow estimates, tunnel/quarry design, groutability evaluations and targeted remediation.
Deliverables
- You receive calibrated time-series plots, interpreted hydraulic conductivity for each well or interval, uncertainty/repeatability notes, and design-ready recommendations (e.g., predicted inflows, drain performance).
Standards and Compliance
- Work aligns with AS 1726 (Geotechnical Site Investigations - https://www.standards.org.au/standards-catalogue/standard-details?designation=as-1726-2017) and, where applicable, AS 4133.4.2.2-2013 for soil/rock test methods.
Why HGEC?
With more than 24 years of experience in hydrogeology and environmental consulting, HGEC delivers clear, practical, and scientifically defensible groundwater advice. Our independent approach ensures groundwater resources are protected while enabling clients to plan with confidence and certainty.
