Site Investigation and Remediation Drilling Services

The three methods suit different jobs, and we run all of them in-house, so we specify the method to the ground rather than to the rig we happen to own. Windowless sampling is quick and low-disturbance for shallow geotechnical and environmental holes and gets tracked rigs into restricted sites - typically windowless sampling to a standard 5-6m, or up to around 10m in suitable ground conditions, and dynamic probing to around 20m. Cable percussion (shell and auger) is the workhorse for deeper holes in soils, hard clays, silts and sands, with 150mm to 300mm casing and tooling for SPTs, U100 sampling and monitoring or remediation well installation. Dynamic sampling and rotary drilling are for sampling soils and coring or open holing through solid geology to reach the required depth. Tell us the ground model and objectives and we will advise.

Yes - it is central to what Geotron does. Working clean areas before dirty ones, we clean down tools between positions so contamination is not carried from hole to hole, and recover the soil, soil-gas and groundwater samples the assessment calls for. Our rigs and crews are equipped for hazardous and volatile ground, including being fitted with spark arrestors and chalwyn valves. We are also experienced with installing aquifer protection seals, through temporary casing reduction or the installation of sacrificial casing strings.

Yes. We install, develop, repair and decommission monitoring and abstraction wells, and we carry out remediation directly - including direct injection of remediation product into the ground. That means one contractor can take a contaminated site from investigation through to active remediation.

Nothing is drilled until the position is cleared. Our pre-drilling preparation scans and marks each location, and where a spot needs proving we excavate either using insulated hand tools or via vacuum excavation techniques to confirm service avoidance. It is a standard part of every job.

Yes. We can provide PAS 128 utility clearance surveys and topographical (XYZ) GPS surveys alongside the drilling, so the survey and the intrusive works are coordinated under a single point of contact.

Yes - we have vacuum excavators in our own fleet. They remove soil with suction rather than a mechanical bucket, so we can expose buried services, dig inspection pits and prove borehole positions safely, with no drilling tool going near live apparatus.