LEAP completed a phased ground investigation (desk study, boreholes, trial pits, soil vapour and groundwater monitoring) at a former petrol filling station.
The site is located in a sensitive location in Canterbury with respect to potential archaeological remains and the underlying chalk aquifer.
All investigations were undertaken with archaeological watching brief and comprised the excavation of trial pits and boreholes including installation of monitoring standpipes to facilitate ground gas, soil vapour and groundwater monitoring.
The investigation, groundwater monitoring and subsequent detailed quantitative risk assessment (DQRA) found elevated levels of contamination in near surface soils with respect to the proposed student accommodation end use. The groundwater risk assessment also identified unacceptable petroleum hydrocarbon impacts within the underlying chalk aquifer requiring groundwater remediation.
LEAP Engineers verified remediation works including watching brief verification of excavation of impacted soils, groundwater monitoring and inspection and testing of soils following ex situ remediation to confirm suitability for reuse.
Phased ground investigation (desk study, boreholes, trial pits, CPT)
Geotechnical and Geoenvironmental Assessment reports
Detailed Quantitative Risk Assessment (DQRA)
Foundation Works Risk Assessment (FWRA)
Regulatory Liaison and Project Management
Verification of Remediation
LEAP was involved with the project from design stage through to planning sign off. LEAP liaised with regulators to agree risks and obtain approval of the remediation approach to allow planning sign off.
The detailed quantitative risk assessment, remediation strategy and approach taken to verification demonstrated suitability for reuse of material on site, minimising costs associated with waste disposal.
Close communication and liaison with the archaeological and remediation contractors working on site allowed archaeological clearance, remediation and validation works to be completed ahead of critical construction deadlines ensuring delivery of the development and opening of the student accommodation to programme.
Contact your regional office
Call on 01580 211605
Email us here
Spelmonden Old Oast, Spelmondon Farm
Goudhurst, Kent TN17 1HE