WHAT WE DID
Comprising a network of 22 SDS GEOlight® underground water storage reservoirs, together with multiple vortex flow control devices and by-pass separators, the scheme has the capacity to capture over six million litres of surface water runoff from heavy, prolonged rainfall. By providing the 100,000m² site with the appropriate drainage facilities, SDS’s GEOlight® system removes the risk of creating or exacerbating a flooding problem and of polluting local watercourses and surrounding land.
The scheme’s market sector leading environmental credentials are especially important as the site is located on former agricultural land and continues to drain into two pre-existing man-made ponds which also serve to drain surface water from the surrounding fields. Ditches that had previously crossed the site have either been left open or converted to culverts under parking areas where the site layout permits. This mimics the pre-existing situation by maintaining peak flows through the ditches into a brook.
The development has been carried out in accordance with the approved Flood Risk Assessment and included limiting the surface water runoff generated by the ‘critical storm’ (1 in 100 year plus climate change) so that it would not exceed the runoff from the undeveloped site or increase the risk of flooding off-site.