Soakaways & Drainage
Borehole Soakaways, West Malling, Kent
Rotary DTHH drilling, testing and installation
of over 500 deep bore soakaways within the Hythe Beds on a major mixed-use
redevelopment scheme in Kent. 
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Bracknell, Berkshire
Infiltration testing to determine design parameters for a lage area of perneable paving forming part of a landscaping project at a new arts centre.
Lymington, Hampshire
Investigation of an open area for use as a sports field. Works included cable percussive boreholes with installation of standpipe piezometers, trial pits with full scale BRE 365 soakage tests, groundwater monitoring and interpretive reporting.
Morestead, Winchester
The contract involved the installation of two 20m deep 200mm diamater groundwater monitoring boreholes adjacent to the River Test Navigation, with the subsequent maintenance and monitoring of groundwater levels as part of an application for a dischage consent. Rotary DTHH drilling techniques were used, with flush controlled by the use of a gully emptier to ensure that drilling flush did not enter the watercourse. A number of data loggers were installed within these new and four other boreholes to allow water levels to be monitored over a 12 month period.
Lewisham, London
Main ground investigation for flood alleviation scheme along a 3.8km reach of the Quaggy River near Lewisham. The main scope of works included: 20No shell and auger boreholes to depths of up to 20m; Installation of standpipe piezometers including monitoring and sampling; DPT and LRS testing to depths in excess of 10m; Window sample boreholes to depths of up to 4.5m; Machine excavated trial pits to depths of up to 3.5m; 30No hand excavated trial pits at locations both within the river and on the riverbanks to expose the foundations of existing river walls to depths of between 1.5 and 3.0m; Concrete coring of existing river structures at over 35No locations; A ground penetrating radar survey of river wall faces to determine the location of voids, reinforcement and other areas of potential structural failure, and thereby establish the likely remaining lifespan of structures; Geotechnical and Chemical Laboratory Testing; Factual and Interpretive Reporting.
