DTS Raeburn have experience in undertaking ground investigations on a wide variety of Greenfield and Brownfield sites.

Services provided include:​


Preliminary Services

The safety of our workforce and members of the public is of paramount importance in all our operations. 

Underground Utilities Service Clearance

Where plans showing the locations of underground services are not available, DTS can utilise specialist ground penetrating radar (GPR) and electromagnetic equipment in order to locate all detectable services in the vicinity of the exploratory hole locations.

Vacuum Extraction

In areas with a high concentration of buried services, or where services cannot be accurately located, vacuum extraction can be used to safely advance borehole positioned past the depth at which services are likely to be encountered.

Unexploded Ordnance (UXO) Survey

If a desk-based assessment has indicated a potential risk from UXO, site briefings can be given to all personnel and the monitoring of borehole positions can be undertaken using specialist equipment to detect potential UXO.

If required, topographical surveys can also be undertaken to accurately provide the location and elevation of features across a site.

Soil and Rock Sampling

Intrusive geotechnical and environmental investigations can be undertaken utilising numerous methods of sampling depending on the nature of the site, the anticipated ground conditions and the objectives of the investigation.

Water and Gas Monitoring and Sampling

Groundwater and gas monitoring standpipes can be fitted into all borehole types followed by monitoring of gas emissions and groundwater levels. This monitoring can be undertaken during return visits to site or automatically using continuous monitoring devices.


If required, samples of groundwater can be recovered for laboratory testing using a variety of techniques to suit the objective including disposable bailers, peristaltic pumps and low-flow sampling. Gas samples can also be recovered.

In Situ Testing

Laboratory Testing

Our laboratory testing services are provided by our group sister company, Terra Tek Limited. A UKAS registered laboratory with capability for a wide range of geotechnical and chemical contamination testing services.

Geotechnical and Environmental Reporting

DTS produce comprehensive factual and/or interpretative reports (including Ground Investigation Reports in accordance with Eurocodes) with verified exploratory hole records and AGS data. Where applicable, design parameters/recommendations relating to the following are also included:

  • Generic and Detailed Quantitative Risk Assessments (GQRA and DQRA) of ground contamination

  • Assessment of liability under Part IIa of the Environmental Protection Act 1990

  • Off-site disposal classification of surplus soils (WAC)

  • Foundation and pavement design

  • SLope stability analysis

  • Retaining wall design

  • Ground gas risk assessment

  • Sulphate attack on buried concrete