Treatment of 34,000m3 of Asbestos Contaminated Soil

Client / Hertsmere Borough Council
Site / 'The Mound', Elstree Film Studios
Value / £3,455,000
Timescale / 9 months


‘The Mound’ at Elstree Film Studio in Borehamwood, Hertfordshire has been remediated in a nine-month project. Sanctus treated approximately 34,000m3 of soil containing cement-bonded asbestos fragments and then removed the remediated soils to landfill as part of a £3.5m enabling works contract. The land had been unused for 30 years since the deposition of contaminated materials prior to Hertsmere Borough Council taking ownership in 1997.

Sanctus achieved a £6m saving for the client against previous proposals from other contractors to remove the materials directly to Hazardous landfill. The work is a step towards the development of additional state-of-the-art television and film production facilities.

The impacted area, at the rear of the complex, comprised more than a quarter of the studio’s useable land and had previously constrained expansion.

The programme of works included clearing surface vegetation, segregation and removal of Japanese knotweed-infested soil, onsite treatment of asbestos-containing soil under Sanctus’ Mobile Treatment License, levelling of the area to an agreed level, installation of site drainage and granular working platform and a hydro-seeded embankment.

Sanctus maintained the highest levels of health, safety and environmental controls throughout the project including deployment of specialist dust suppression systems and daily air monitoring. Regular consultation with the project managers AECOM, Elstree Studios management, the local authority and production teams from the BBC, ITV and Channel 4 ensured that the works were completed to the complete satisfaction of all stakeholders. Hertsmere Borough Council chief executive Donald Graham said: “The clearance of the site was an impressive project and has been achieved without disrupting a number of high-profile productions staged at the studios.”