grangegorman development 27 January 2011

The Grangegorman Development Agency has appointed HDL as main contractors for the enabling works to be carried out at the Grangegorman site in the north inner city. The project comprises demolition and associated activities but the main works consist of the permanent removal of two invasive plant species, namely Giant Hogweed and Japanese Knotwood. Giant Hogweed is a highly toxic plant. Its sap can cause severe skin inflammations when the skin is exposed to sunlight or to UV-rays, causing  blisters  that can last several years. Hospitalisation can sometimes be necessary.

Japanese Knotweed has a large underground network of roots.The invasive root system and strong growth can damage foundations, buildings, flood defences, roads, paving, retaining walls and architectural sites.

The site is to be developed as the new DIT campus and the threats these plants pose to both the public and to infrastructure need to be addressed.

The affected areas will be excavated to the required depth to ensure that no infestation remains. The spoil will be stockpiled on site and treated over the next four years to ensure the threat from these plants has been eliminated permanently.