Japanese knotweed mitigation, Parsons Green

This project was contracted by the Transport of London. Upon starting, Japanese knotweed was found and appropriate mitigation measures were needed.

Background

Morgan Sindall has been contracted by Transport for London to construct multiple signal equipment rooms across its London Underground portfolio, including at Parsons Green, which required a new signal equipment room and a new emergency speed reduction facility. The work involved constructing a new building on existing sidings close to Parsons Green Tube Station to house the new facilities.

Owing to the steep slope, Morgan Sindall designed a piled solution to provide a stable base for the new facility. Initial surveys carried out by London Underground identified Japanese knotweed within the footprint of the construction work.

Actions taken

Supplied and installed Netlon fencing around the perimeter of all the existing Japanese knotweed stands
Put a herbicide treatment regime in place for the duration of the construction work to prevent the spread of Japanese knotweed
Cleared vegetation along the proposed construction access and egress routes
Installed ground protection matting to facilitate pedestrian access and egress to ground monitoring stations.

“Following a competitive tendering process, we chose RSK Habitat Management to undertake the work, which they did in a highly professional and efficient manner. Despite the constraints associated with working in and around London Underground infrastructure, the work was completed ahead of programme and to a high standard.”
David Penston Subagent, Morgan Sindall