Client: Crest Nicholson South West
Date: 2015 (18 weeks)
Nature of Works: Earthworks, Stabilisation, Invasive Weeds Management & Development Platform
Contract Value: £780K Bespoke Lump Sum Contract with Re-measurable Elements
The site is being redeveloped to a high-rise mixed-use scheme by Crest Nicholson. Historically it was occupied by a paintworks which included extensive tipping of associated waste and by-products. The site is bounded by the River Avon and significantly contaminated with heavy metals, hydrocarbons and asbestos.
This project presented three major challenges. A reduced level cut involving approximately 5000m3 soil followed by construction of a large piling mat was necessary to achieve development formation levels. Secondly, off-site disposal volumes needed to be minimal to maintain project feasibility. Finally, with the River Avon immediately adjacent to the site, the overall strategy needed to limit mobilisation of contaminants both during the construction phase as well as the completed phase. The site presented additional constraints due to the requirement to work around existing high-voltage electric cables, live pumped foul/storm sewers as well as Japanese Knotweed infested areas.
Soilfix designed and implemented a multi-disciplinary remediation scheme with an engineered development platform in accordance with a Materials Management Plan (MMP) developed fully in accordance with the CL:AIRE Code of Practice (CoP), including:
Soilfix personnel were awarded a ‘Green Card’ for exemplary standards achieved. All works were successfully completed to enable commencement of piling on-programme with site specific geotechnical requirements met and no measurable impact to the river recorded during development.
Since completion, Soilfix has been endorsed by the Environment Agency Officer dealing with the project as a best-practice example of sustainable risk-based materials management in accordance with CL:AIRE Code of Practice.
We have a dedicated and highly knowledgeable team lying close to Greater London in Rayleigh, Essex.
They are more than willing to assist you in any way possible, so feel free to call them with any questions or queries you may have on 01268 502272.