Investigation of brownfield site to support Planning Application for large redevelopment in Kent
20 August 2012, News release from Ecologia Environmental Solutions Ltd
Ecologia carried out an extensive Geo-Environmental and Geotechnical Intrusive Investigation at a site in Kent, during July and November 2011.
The purpose of the works was to characterise the site for planning purposes, in support of a Planning Application for the re-development of the site - which is intended to incorporate lakeside housing and an activities centre for water sports and recreation.
Historically, the northern portion of the site was largely operational as a sand and gravel opencast quarry which (in-part) was later functioning as a registered landfill site for inert waste. The southern part is open lakes.
·Site investigation (Contaminative & Geotechnical) July 2011:
Ecologia completed extensive intrusive works across the 55Ha site incorporating 36 No. non-targeted trial pit locations and completion of 5 No. boreholes using a Rotary Drilling Rig. The boreholes were sunk to obtain geotechnical data (SPTs) and were installed for groundwater and gas monitoring purposes to analytically assess soil gas and groundwater for contamination. The trial pitting was completed to characterise ground conditions and to assess the site for potential soil contamination, and samples from most pits and boreholes were submitted for laboratory analysis.
The works also included dynamic probing to supplement existing data and CBR testing to determine the near-surface geotechnical properties on the routes of the proposed roadways.
The site investigation works were also supplemented by 4 No. groundwater monitoring visits and 6 No. rounds of gas monitoring.
The Site Investigation report incorporated the completion of a Generic Quantitative Risk Assessment (GQRA) for human health and controlled waters, incorporating statistical analysis of the laboratory results obtained, alongside interpretation of the recent (and historical) geotechnical site data.
·Supplementary Site Investigation and Soakage Testing (Dec 2011):
Ecologia re-visited the site to complete additional investigation work to characterise the extent of the (closed) landfill north of the site, with the purpose of aiding the design of a swale structure/pond. This was to support a Flood Risk assessment and SUDS design, and to aid ecological design (by others), and a possible lake extension as part of the site's proposed re-development plan. The works included the completion of 10 No. trial trenches and 10 No. window sampler boreholes. In-situ soakage testing was also completed within 3 boreholes across the site to aid re-development design.
The Investigation reports were completed, following detailed discussed with Regulators, and then submitted as part of the Documentation to support the planning application for the re-development of the site.
For further information please email Ecologia Environmental Solutions Ltd