GEOPHYSICAL
ENGINEERING

Underground Storage Tanks

Left : 3D rendered image of the GPR survey results presented in CAD. The tanks are visualized along with a service running over their top.

Underground Storage Tanks are prevalent on sites throughout the UK including petrol filling stations (PFS), council depots, fire and ambulance stations, military bases and industrial sites.

Many of these are sites have been identified for development and so locating them is key before design and construction can commence. Additionally, USTs can cause contamination across the site, so knowing their location is fundamental for health, safety and environmental concerns.

The Answer – A Combined Geophysical Survey

The most suitable technique for detecting tanks in many applications is Ground Penetrating Radar (GPR). It works in a wide range of congested environments and will detect tanks made from both metallic and non-metallic materials, as well as provide depth information to top of the tank.

Above : Example GPR radargram (section view). In the centre two broad crested anomalies can be seen showing the location of two fuel tanks.

Above : Timeslice (plan view) showing 3 adjacent tanks. Above Right : Interpretation of GPR data in CAD showing the 3 tanks (A-C) at 0.5m depth.

Other techniques that can be used are Magnetic Survey and Ground Conductivity depending on the site conditions and the materials from which the tank has been made. These techniques are lower resolution, but more cost effective, enabling large areas to be surveyed and then targeted with GPR for improved accuracy and depth information.

Above : Ground Conductivity data in Plan and section view showing 3 possible tanks showing the amplitude of response.

All three techniques carried out on-site on the same day, with most sites taking no more than a day to survey. Immediate initial results may be presented on-site, with more detailed post-processed results available shortly afterwards to suit your timescale.

How accurate is SUMO's underground utility survey and what types of utilities can it locate?

Using cutting-edge technologies like electro-magnetics, signal induced threading, and Ground-Penetrating Radar (GPR), our underground utility surveys accurately detect a wide array of buried utilities including metal and plastic pipes, drainage systems, electricity cables, telecoms, and fiber optic cables. The methodology ensures high accuracy without the need for invasive trial holes.
What is the turnaround time for obtaining results with SUMO's Underground Utility Detection service?

SUMO’s service is built for rapid response. Contractors can receive immediate results onsite. Our equipment provides real-time information, and once we leave the site, the detected utilities are visibly marked on the ground surface for quick reference.
Does SUMO provide detailed mapping of the detected utilities for permanent records or construction purposes?

Absolutely, SUMO not only marks the detected utilities on-site but also offers high-quality, color-coded survey drawings. These drawings can include topographic features and a comprehensive record of the utility detection survey, ensuring it meets the client’s needs for future reference or pre-construction design works.
Topographical and Geophysical survey

In addition to mapping out utilities, our experience team can accurately survey the land, creating topographical drawings for use. With our state-of-the-art aerial technology, nothing is missed.
What additional information can be included in the underground utility mapping service provided by SUMO?

In addition to topographic features, SUMO’s mapping service can include fixed surface utility features such as inspection chambers, valve boxes, and telegraph poles. It can also incorporate key topographic details like building lines, fence lines, kerb lines, street furniture, street names, building names, and house numbers, facilitating easy site location.
Does the utility mapping service by SUMO include standard referencing and compatibility with existing survey data?

Yes, SUMO ensures the utility mapping references the ordnance survey grid and level datum as standard. Additionally, the drawings can be supplied to a specified grid and level datum and can overlay an existing topographical survey, making it a versatile and adaptable service for various project needs.
What sets SUMO Services apart from other survey providers?

SUMO stands out due to our impeccable level of service with nationwide coverage, state-of-the-art equipment, and our commitment to delivering top-quality, detailed colour-coded survey drawings in both hard and electronic formats.
How do I request a survey quotation from SUMO Services?

Requesting a quotation is easy. Just click on the "Request a Survey Quotation" button on this page, and our team will get in touch with you promptly.
Can I book a SUMO Survey online?

Yes, you can! Simply click on the "Book a SUMO Survey" button on this page, and you can schedule your survey with us at your convenience.
What type of survey is suitable for my project or site?

Our experienced team will work with you to determine the most appropriate survey for your specific needs. Contact us, and we'll assist you in making the right choice.
Can I obtain both digital and hard copies of survey drawings?

Absolutely. We offer the convenience of electronic copies for digital use and hard copies for your records. Just let us know your preference.
Do you provide custom survey solutions for unique projects?

Yes, we understand that every project is unique. Our team is highly adaptable and can tailor our surveying services to meet your specific requirements.
How do I get in touch with SUMO Services for further questions?

For any additional questions or inquiries, feel free to contact us through the contact form, and our dedicated team will assist you promptly.