In the late 1980's the development of the A27 bypass cut through the land of Patcham Court Farm. On the west side of the farm by the roundabout a collapsed cavern was discovered,
This collapsed cavern is on the side where Royal Mail are proposing to build the 4000+ sq metre building. They are proposing to use pilings into this area of the collapsed cavern to support the building.
We believe this is fundamentally unsafe and could in time cause a landslide into the bypass sliproad or more immediately send pollutants into our water in the Waterhall Pumping Station.
Caverns and sinkholes occur when the surface land collapses due to groundwater dissolving sediments underground, or when too much groundwater is pumped from an aquifer.