Scottish Water – Dunoon, Argyll November 2008
Raeburn Drilling and Geotechnical Limited are presently completing the site works, testing and reporting for a major infrastructure project in Dunoon, Argyll for Scottish Water.
The construction works will consist of upgraded pipelines, a new sewage treatment works and the installation of new sewage outfalls at the Holy Loch.
The Raeburn site work consisted of a first phase land investigation involving 39 cable percussive boreholes along the A815, from Sandbank to Hunter’s Quay with a series of trial pits down to Bullwood Quarry. In addition a series of 10 rock exposures have been mapped, by our in-house geologists, to assist in the assessment of excavation techniques at the construction stage (see photo).
The recently completed second phase consists entirely of over water work. This marine investigation comprised 24 Cone Penetration Tests and 30 Vibrocores, at the 7 proposed outfall locations. These works were all undertaken from a floating platform.
The photos illustrate the Seahorse platform, the CPT and the Vibrocore equipment used for the marine aspect of the work.
