New Medical Centre

Henderson & Taylor was appointed by the Healthcare Partnership to undertake removal of Japanese knotweed in Swansea. The works were required to prepare the site for the development of a new medical centre. The site was heavily infested with Japanese Knotweed, which was present within dense vegetation, adjacent to residential buildings and within the boundaries of a local park. Henderson & Taylor undertook a number of site surveys in order to identify and map the extent of Japanese Knotweed on site. We then prepared and agreed with the Client a Japanese Knotweed Management Plan outlining the remedial solution and control measures to be adopted on site in order to manage the Japanese Knotweed. Prior to remediation works, Henderson & Taylor managed enabling works comprising demolition & vegetation clearance on site to ensure that any Japanese Knotweed present within these areas was properly managed. Excavation and treatment of Japanese Knotweed impacted soils was completed on site via a two stage screening process. The first stage involved selective excavation and segregation (removal of large rhizomes and crowns) by hand. These soils then progressed to second stage screening processing via a mechanical screener and picking station to remove residual Japanese Knotweed. Following treatment and further examination to confirm that there were was no Japanese knotweed contamination, these soils were placed in an area of public open space, where they will be monitored for two years. Approximately 3500m3 of infested soils were treated following this methodology, resulting in considerable cost savings in comparison to traditional off-site disposal options.