Ground Penetrating Radar

PAS 128 compliant utility survey is a cost-effective risk management tool for mitigating both Health & Safety and financial risks

Professional Services

Embark on your construction project with confidence PAS 128 offers 4 levels of survey with the option of post processing.

Quality Level D - Desktop Survey

Request all utility record information from all of the relevant asset owners. With this survey level, we provide the client with all of the stat plans from the asset owners. This will show the client where the main lines of the asset are based.

Quality Level C - Site Reconnaissance Survey

This locates the physical features that support the existence of utilities in the survey area, including the type and markings of utility related surface features, measurements between known surface features on the ground compared with those depicted on the plan (if available), differences between the map/drawing or digital features supplied and those extant on the ground.

Quality Level B - Electromagnet & GPR survey

This includes depths and positions on all utilities including, but not limited to: • Electricity • Gas • Water • British Telecommunications • Drainage • Fibre Optics • Radio Signals • Camera Cables (CCTV) Post processing can also be requested on the Radar data. This gives more accuracy and allows a clearer picture into the ground for the client.

Quality Level A - Electromagnet, GPR survey & Excavations

This level of survey incorporates Level B, but also backs up the data with a series of excavations to expose the target utilities within the survey area. Once the client has received the finished drawing for Quality Level B, they can choose the areas that they would like to have the utilities exposed in and then the data confirmed on site can they be added to the drawing with the quality and accuracy updated if necessary.

Case Study

Camden | London

Sun Hill was tasked to undertake a PAS128 utility survey of an area of the London Borough of Camden using Ground Penetrating Radar.

The aim of the survey was to accurately identify the location and type all of the sub surface utilities in the area of interest and to produce a CAD drawing detailing each utility.

This required electromagnet and GPR surveying to establish depths and positions on all utilities including, but not limited to electricity, gas, water, drainage and telecommunications.

This methodology ensures that the highway could be redesigned around existing utilities and prevent any damage or disturbance to these underground services.