Remediation of Contaminated Land & Groundwater

Remediation of the Bessbrook Helipads

The Challenge

ATG Group were contacted by the demolition contractor Rothsbothams Ltd to price a major remediation contract at the above site on behalf of the MOD and their consultants Enviros Ltd. This contract involved several complex issues to be addressed which required a teamed approach with ATG Groupd, Island Enterprises Ltd, Practical Waste Solutions Ltd, Rothsbothams, the consultant Enviros and the client MOD.

The Solution

On site excavation and management of all soils based on the excavation of approximately 15,000 m3 (approximately 30,000 tonnes) which was divided into three categories clean for re-use, potentially contaminated and contaminated.

Treatment of 8,500m³ (17,000 tonnes) of excavated contaminated soils was performed at an engineered on-site area using bio-remediation. All of this was undertaken via a mobile treatment licence which was obtained from the NIEA and fully deployed by the team for this project.

Management of all contaminated groundwater, surface water runoff and any leachate material generated via the remediation process. This was accomplished via an in-situ treatment facility involving cut off trenches, temporary balancing tanks, multi-phase oil water separation and discharge under license to sewers permission of which was obtained from the NI Water.

Removal of Hazardous and Non-hazardous waste from site including heavy metal contaminated soils and other wastes was estimated at 3000 m3 total for the project.

All environmental monitoring on site for the duration of the project including installation of sampling wells. The sampling of groundwater, river sampling, all soil sampling including validation, on-site dust, Volatile Organic Compounds (VOC’s) sampling etc.

The project reached the final phase with >75% of the materials being treated now at a levels fit for re-use on site with total project costs of approximately £1,000,000

The Benefits

Benefit 1

Benefit 1

Using ATG Group's strategic partnerships, we were able to deliver all aspects of the waste management and decontamination on this site, realising time and cost savings for the ATG and in turn the client.

Benefit 2

Benefit 2

>75% of the total contaminated materials were able to be reused on site saving the client a significant amount of money on the disposal of soils.

Benefit 3

Benefit 3

Treatment on-site through the use of a mobile treatment licence saved additional costs on transporting vast amounts of contaminated soils to designated treatment centres.

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