Precise Well Construction & Soil Sampling
HSA drilling enables the installation of monitoring wells inside the augers, allowing for accurate placement of well screens, sand filter packs, and transition seals. This method prevents borehole collapse and ensures the integrity of soil and groundwater samples.
Minimising Contamination Risks
Unlike traditional drilling methods used in India, such as air rotary and mud rotary drilling, HSA does not require drilling fluids, which can alter groundwater chemistry or dilute contaminants. Keeping the augers in place prevents vertical migration of contaminated material.
Comprehensive Logging & Site Characterisation
With HSA drilling, we conduct continuous soil column logging to identify:
- Migration pathways
- Confining layers
- Critical stratigraphic changes
- Contaminated intervals
This data supports precise environmental assessments and remediation planning.
Efficient & Cost-Effective Solution
HSA is recognised as the most efficient and cost-effective drilling method for contaminated sites, ensuring:
- Faster setup and execution
- Reliable soil and groundwater data
- Reduced site disturbance
Equipment Available
- Hollow Stem Auger Rigs
- Split-Spoon Samplers for undisturbed soil collection
- Hydropunch Groundwater Sampler for targeted interval sampling