Locating underground assets such as power and gas lines is essential prior to any excavation or drilling works

The track mounted drill rig is an excellent option for tight access areas for both soil sampling and the installation of groundwater wells

Changes in the basalt profile can be seen in this image with the darker colour indicating groundwater has been struck

Diesel and diesel oil was found floating atop the groundwater within this well at a contaminated site, where 70 year old disused underground fuel tanks had been abandoned from the former industrial site use

A large fuel spill had resulted in extensive soil and groundwater contamination. Soils were excavated to a depth of 4.5 m before clean soil was found. Contaminated material was remediated and disposed of to landfill

During remediation of this small former service station site, 21 underground fuel tanks were found and removed for destruction and metal recycling

Further underground fuel tanks removed from the same former service station. These tanks were not on the plans, one was even installed underneath another. A great example of why you should always expect the unexpected when dealing with contaminated land

Following demolition of this former commercial site, the slab was removed and two underground fuel tanks were unexpectedly discovered. The tanks were quickly and appropriately removed and disposed of with minimal impact to the progress of the development

In this instance, leaving the excavation open while waiting for laboratory result was posing an unacceptable risk to the public so the pit was lined with plastic and back-filled with the excavated material. When results were received, the contaminated material could be removed and appropriately disposed of. The excavated material was then replaced with clean fill sourced from a nearby basement excavation site

This picture is showing the lined excavation having been back-filled, as well as a stockpile of contaminated material encapsulated in plastic to restrict public access

All surface fill material at this site was found to be contaminated so detailed excavation works were undertaken in preparation for a basement dig. The clean natural material was reused at a different site, resulting in considerable savings for the client

Some of the contaminated soil scraped during works shown in the previous photograph. The stockpile is being loaded out from the site for disposal to landfill