St James Village, Gateshead

St James Village, Gateshead

Chemical and containment options on residential development site

Japanese Knotweed Solutions were appointed to undertake a full site survey to plot the presence of Japanese Knotweed. Digital surveying equipment was used to locate the areas of contamination and a full pack of recommendations were produced for the Client.

Plans for the site included a new housing development. Our client was keen to move quickly and begin treatment of the Japanese Knotweed to prevent further spread whilst options for a more permanent solution were drawn up.

Chemical treatment commenced in October 2006 which comprised of fencing off contaminated areas, cutting surface growth to the recommended height and chemically treating the new growth.

JKSL worked closely with the client and their engineers to come up with a viable option for treating the problem whilst still enabling the development to proceed on schedule. Chemical treatment alone was not an option as this would take too long to achieve eradication and would hold up the development.

The approved way forward was to bury the contaminated material in a borrow pit in an agreed area on site. This was broken in to two stages as a sewer had to be diverted away from the burial area. The first stage was to dig the contaminated material out and store in a temporary waste management area on site. This was clearly marked out and monitored for a period of time until the sewer was diverted. JKSL supervised this diversion and were then able to complete the works which involved burying the contaminated material in a sealed cell on site.

The site was provided with a 10 year warranty which the client required to run alongside their NHBC guarantee.

Avebury International.

Japanese Knotweed Solutions Ltd (JKSL)

For more information on this project, please contact, Suzanne Hardy