JPG (Leeds) Limited were appointed to carry out a desk study and a ground investigation for a mixed use development off Old Lane, Beeston in Leeds.
The following geotechnical constraints were identified:
Historical foundations and structures.
Localised perched waters.
Locally deep made ground.
Based on the above findings, JPG concluded that no gas protection measures were necessary; slightly elevated concentrations of PAH species including benzo(a)pyrene and potentially airborne asbestos fibres were detected within the made ground; a combination of shallow strip foundations and deeper trenchfill foundations could be utilised; soakaways would not be suitable for the accommodation of surface water drainage and concrete should be designed to Design Sulphate Class DS-1 and ACEC Class AC-2z.