Geotechnical Drilling & Excavation Services
Geotechnical and environmental drilling, test pits and pavement investigations throughout Melbourne and regional Victoria.
GEOTECHNICAL & ENVIRONMENTAL INVESTIGATIONS
DRILLING CAPABILITIES
Solid auger drilling – 150 mm OD
Rotary air drilling
Automatic SPT testing
U63 undisturbed soil sampling
HQ3 diamond rock coring
Rotary mud / wash boring
HQ casing advancement
Monitoring well installation
Gas monitoring bores
Monitoring well development and repairs
Bore decommissioning
Excavator 4T Kubota - Test Pits & Pavement Dippings
The GEO-305 is suited to geotechnical and environmental site investigations, soil and rock sampling, groundwater investigations, monitoring well installation and infrastructure projects.
Callaway Drilling provides geotechnical and environmental drilling services throughout Melbourne and regional Victoria, with the rig available for both short-term investigations and larger drilling programs.
RIG DIMENSIONS
Overall width – 1.5 m
Overall length – 5.45 m
Height (mast down) – 2.2 m
Height (mast up) – 6 m
Weight – 3,550 kg
Our 4T Kubota excavator is available for geotechnical and environmental investigations throughout Melbourne and regional Victoria. Its compact size makes it ideal for test pits, pavement dippings, soil investigations and restricted-access sites.
CAPABILITIES
Geotechnical and environmental test pits
Digging depth up to approximately 3.4 m, subject to ground conditions
Pavement dippings and pavement investigations
Geotechnical soil investigations
Backfilling of completed test pits
Compact 1,700 mm machine width
Experienced operator supplied
BUCKETS & ATTACHMENTS
300 mm, 450 mm and 600 mm digging buckets
1,200 mm mud / clean-up bucket
350 mm auger
1.5 m auger with 1 m extension
PAVEMENT & GEOTECHNICAL INVESTIGATIONS
The Kubota is particularly suited to pavement investigation programs where multiple locations need to be completed efficiently. Our excavator and beavertail truck can be mobilised throughout Melbourne and regional Victoria for pavement dippings, test pits and geotechnical investigation works.
Callaway Drilling can provide the excavator as a standalone service or alongside our geotechnical drilling services, allowing drilling, test pits and pavement investigations to be coordinated through one contractor.
DRILLING DEPTHS
Solid auger drilling – up to 15 m
Rotary air drilling – up to 30 m
Automatic SPT – up to 40 m
U63 sampling – up to 40 m
HQ3 diamond coring – up to 45 m
Rotary mud / wash boring – up to 45 m
HQ casing advancement – up to 45 m
6T Excavator – Larger Test Pit Capability
For projects requiring additional digging depth or capacity, Callaway Drilling can arrange access to a 6T Wacker Neuson excavator for geotechnical and environmental investigation works throughout Melbourne and regional Victoria.
CAPABILITIES
Geotechnical and environmental test pits
Digging depth up to approximately 4 m, subject to ground conditions
Deeper test pits and larger excavation works
Backfilling of completed test pits
Experienced operator supplied
BUCKETS
300 mm, 450 mm and 600 mm digging buckets
1,200 mm mud / clean-up bucket
Comacchio GEO-305 - Geotechnical & Environmental Drilling
Our Comacchio GEO-305 is a compact and versatile geotechnical drilling rig servicing Melbourne and regional Victoria. The track-mounted rig is suited to geotechnical and environmental investigations across a range of ground conditions and restricted-access sites.
Services
Geotechnical Drilling • Environmental Drilling • Excavation & Test Pits
Contact Callaway Drilling
© 2026 Callaway Drilling Pty Ltd. All rights reserved.
Callaway Drilling Pty Ltd
ABN: 55 689 088 186
Cranbourne, Victoria, Australia