Geotec Underground Mapping

Accurate underground mapping to locate utilities, voids, and hidden features
– backed by 25+ years of experience.

GEOTEC Surveys Ltd are a specialist provider of underground mapping surveys for buried services, utilities, voids and other subsurface features.  

We have over 25 years of experience in detecting and mapping known and unknown targets that may be present within any given site. 

Want to know more about Underground Mapping?

PAS 128 Surveys

GPR Surveys

Utility Mapping / Buried Services Surveys

Vehicle Mounted GPR Surveys

Service Clearance / Marking Out Surveys

GeoTec Surveys works with energy distribution providers and their contract partners to carry out full underground mapping and topographical surveys, as well as marking our surveys within substation environments, as well as in public roadways and footpaths.

In addition, the teams also have relevant water safety passports and EUSR water hygiene cards to allow Geotec to work at a range of water treatment sites.

Geotec hold the necessary Achilles UVDB & Verify accreditation to allow them to work in this sector

As an accredited RISQS-certified supplier, Geotech PTS certified survey teams assist railway contractor clients in providing underground mapping surveys within trackside and non-trackside environments.

This includes surveying station platforms, subways, car parks and other areas around and within station buildings, primarily providing PAS 128 & utility mapping GPR Surveys.

Much of the work within this sector takes place outside traditional working hours - at weekends and at night.

Geotec assist housing developer clients, usually in scenarios where they need to know where utilities and services are located adjacent to their site, to aid in designing their connections to them.

A full utility survey is usually required when developing a brownfield site, such as previous industrial estates, petrol station sites and other such locations.

 

GEOTEC Surveys also support local authorities & councils in providing PAS 128, utility mapping & topographical surveys for a range of projects in varying locations, including housing estates, care homes, recreation grounds & parks, city centres, council offices and highways environments.

Hospitals, schools and universities can often comprise older sites, which have been built up over the years, making these complex to survey.

Geotec have familiarity in completing full surveys over entire campuses as well as surveying smaller piecemeal areas on and as and when basis. Geotec need to work closely with the estates departments to identify the best times to survey these sites (especially when working near A&E departments), whilst they can also have additional services, not usually found in other environments, such as steam, oxygen and large service trenches.

Geotec assist housing developer clients, usually in scenarios where they need to know where utilities and services are located adjacent to their site, to aid in designing their connections to them.

A full utility survey is usually required when developing a brownfield site, such as previous industrial estates, petrol station sites and other such locations.

Geotec carry out numerous smaller surveys for telecommunications clients wishing to make use of existing infrastructure, such as phone mast sites, around existing telecoms cabinets and where new buried infrastructure is required.

Geotec can complete several sites a day, depending on the localities of each one.

Geotec work both landside and airside at several airports, carrying out full underground mapping surveys for buried services and utilities, most notably at London City and Luton Airports.

Geotec have also completed Vehicle-Mounted GPR Surveys to detect voiding and unconsolidated ground beneath runways and other areas of hard standing.

Geotec have assisted several clients at Heathrow within hangar and fire station locations, where and when required, providing PAS 128 surveys in line with their specific CAD standards and survey protocols

Geotec support clients installing new buried services infrastructure across former and existing barracks sites and has surveyed the whole former MOD sites before their release for housing.

Geotec have undertaken a large survey at a local MOD site, detecting & mapping buried services and utilities, as well as old building lines to assist the demolition contractor.

These sites have a variety of high-value infrastructure running through them, and prior to breaking ground, it is imperative to understand the location, depths and types of buried services within the survey area.

A client, Geotec, supported as part of a large survey, informed them that they helped them avoid a data cable responsible for the transfer of millions of pounds per minute.

These are complex sites with a higher density of buried services and utilities than usual, where a high specification survey is required.

Geotec Industries

  • Energy & Utility Sector
  • Railway
  • Highways
  • Public Sector, NHS & Education
  • Housing
  • Telecommunications
  • Airports
  • M.O.D
  • Data Centres, Business Park and Industrial Estates

Request a Geotec Survey

Pembrokeshire County Council

19 JUNE 2019

GEOTEC Surveys Ltd completed 2x comprehensive PAS 128 Surveys over the February Half Term and Easter Holiday Period at Haverfordwest High School & Milford Haven Secondary School in Pembrokeshire.

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Popular FAQs for Underground Mapping

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Underground Mapping relates to the detection and mapping of buried or subsurface features using a variety of non-invasive survey methods, such as electromagnetics, radio frequency detection and ground penetrating radar.

Everyone has a responsibility to ensure that they have as much information as possible in regard to buried hazards prior to breaking ground, as defined by HSG47.

First and foremost, as a health and safety consideration, to keep people safe.

Underground Mapping also holds a valuable place in the design and feasibility stage of projects – having as much information as possible helps “design the risk out of the project”. It also allows for designers to understand existing capacities and what service diversions may be required, as well as understand possible design clashes.

Any site can benefit from Underground Mapping, especially if breaking ground or if there is an unknown or potential buried hazard present.

GEOTEC Surveys Ltd are members of The Survey Association (TSA) and EuroGPR.  Our surveyors complete meticulous in-house and external training programmes.  

GEOTEC use Radio Frequency Detection (EML), Ground Penetrating Radar (GPR) and Electromagnetic, geophysical survey techniques.

Yes, we work to PAS128, which prescribes the methodologies required for working across sites, with varying congestion of buried services and utilities. We have access to multi-array and vehicle-mounted GPR systems to ensure that sites are surveyed with the right coverage for the environment.

By providing as much information as possible, as to what may be buried within the ground will inform the designers about capacities for tying into existing infrastructure, what needs diverting and what needs avoiding. In some instances, clients need to know if buried tanks, air raid shelters, tunnels, or old building lines are present, for example, so that these can be avoided or require excavating.  We have also detected evidence of previous Roman Roads and have most recently asked to detect evidence of an old fort as well as a Viking ship, buried in a mound!

You can call us on 01428 686168 or email enq@geotecsurveys.com – Tom, Luke or Julian will be pleased to assist you.