Skip to main content

Case Study


Isle Of Man

Auldyn Construction


The Vollan Pumping Station

Dewatering System
  • Shell & Auger Drilling Rig

  • Deep Wells

A new pumping station was needed to replace the ageing Victorian facility at Mooragh Promenade, Ramsey on the Isle of Man and was to be built inside a 10m deep cofferdam some 40m by 11m in plan. The ground conditions consisted of high permeability coarse sand of the coastal beach deposits.

Building The Bullring Birmingham

The Vollan Being Built

The Result

Dewatering Services designed a dewatering scheme comprising of 12 wells each drilled to a depth of 21m below ground level. A shell and suger drilling rig was used to bore a 350mm diameter hole. The wells were designed to accommodate pumps of 60 m3/hr capacity and these pumps lowered the groundwater to below the cofferdam invert level for the 20-week duration of the project.