DBS are supporting a developer client to take forward a new site for housing and a highway at Greensfield, Alnwick, Northumberland. The site is over 11 hectares in size, and will be redeveloped for 271 houses, with a new highway linking the houses to the centre of Alnwick, with quick links to the A1.
We prepared a Phase 1 Geoenvironmental Desk Study report to support the outline planning application for the development in 2013, planning consent was awarded in May 2014 by Northumberland County Council (NCC), subject to a number of conditions being discharged. We are currently supporting our client with the next stage of works, we have designed a large ground investigation to obtain information on the ground conditions on site, to obtain information on site chemistry (soil and groundwater) to allow the contaminated land risk assessment to be progressed through another tier of risk management, and to obtain geotechnical information to support foundation design for new properties, the highway, and associated infrastructure, and also to allow pre-start conditions imposed on the development by NCC to be discharged. The work to develop the highway element of the scheme is being undertaken in conjunction with NCC.
We are currently on site supervising the drilling works, a series of cable percussion boreholes are being sunk across the site, and our geotechnical engineer is also on site supervising a large number of mechanically excavated trial pits.
Following the completion of the works on site, and on receipt of chemical laboratory and geotechnical laboratory analysis results, we will be preparing a comprehensive Phase 2 Geoenvironmental Interpretative Report, to support the discharge of the remaining planning conditions, and to support the site through the next stage of build by the house builder.
The report will include risk assessments for human health and controlled waters, a ground gas risk assessment, revision of the sites initial Conceptual Model, recommendations for suitable bearing capacities for new properties, pavements and roads, a drainage assessment and also an assessment of shrink and swell from existing tree’s and hedgerows on the site. Also, if required, the report will also include a Remediation Options Appraisal and a remedial strategy.
Upon completion the scheme will provide quality housing for Alnwick, and we look forward to supporting our client through the remaining phases of the project and delivering the discharge of the remaining planning conditions to move the project on to success.