DISPOSAL OF EXCAVATED KNOTWEED WASTE ON-SITE AS A CELL BURIAL
As well as providing instant eradication of the knotweed, it allows fully sustainable disposal of the excavated waste on-site in accordance with Government RPS 178. The method requires a suitable size and location where the waste can be buried. The area can be sizable due to the logistics and specifications for burial, with soft landscaped public open space (POS) being among the desirable areas to place a burial.
A deep receival pit is excavated, deep enough so that at least 2m of clean fill can be placed above the deposited buried knotweed waste. The knotweed waste is deposited within the pit, encapsulated in a root barrier, which is referred to as the cell. By residing 2m below finished ground levels it helps protect the cell against future accidental human disturbance or burrowing animals.