Crest Nicholson purchased the 1Ha site from Woking Borough Council following some preparatory works undertaken by the council. The site was a former council tip which historically received a significant volume of asbestos waste. The site was capped but the cap was deemed to be non-compliant by the regulatory authorities.
Following an initial proposal from Keltbray Remediation to re-profile the site and remediate the non-compliant cap, Keltbray worked with the design team to devise a scheme that minimised vehicle movements to and from the site and retain over 12,000m3 of contaminated arisings on site.
The solution included the construction of a stabilised soil pile mat, which again preserved volumes of soils on site and negated the need of a costly imported pile mat.
The site was completed in phases, having been remediated to the satisfaction of the local Environmental Health Officer and the clients Environmental Consultant.
Keltbray has maintained a presence throughout the groundworks to receive all contaminated piling and groundworks arisings and render them suitable for re-use on site.
Keltbray also provided suitable, certified sub-soil for domestic gardens and granular fill for service run backfill.
The works also included provision of a water treatment works for management of encountered groundwater, subsequently discharged in accordance with a Thames Water discharge consent.
Keltbray deployed an Environment Agency Mobile Treatment Permit to regulate the works which required a suite of Environmental Management measures including Dust, Noise, Vibration and Odour monitoring and management. Specific measures in relation to asbestos fibre release were put in place to protect local residents and a local community engagement programme was enacted.
The works were completed on a lump sum all risk basis.
- Client : Crest Nicholson
- Main Contractor : N/A
- Quantity Surveyor : Crest Nicholson
- Structural Engineer : JDP
- Location : Working
- Value : £1.7M
- Programme : 63 weeks