The initial step for the restoration work has been to secure the whole of the Tiromoana Bush area, including the adjacent Department of Conservation managed Ella Peak Scenic Reserve, so that all stock are excluded. This involved substantial upgrading of existing fencing and the installation of new fencing. Removal of stock and ongoing pest control, especially of possums, will allow natural regeneration of native plants to occur over the entire 410 hectare area and in the adjacent scenic reserve.
In addition, over a 35 year timeframe, Transwaste will actively plant native forest and wetland species to assist and support the natural regeneration that will be occurring. Species to be planted will be chosen for their ecological relevance to the locality and their ability to attract and sustain key native birds such as korimako (bellbird) and kereru (native pigeon).
The existing stand of black beech in the middle valley will be enhanced by plantings undertaken using seeds collected from a small beech remnant in the landfill area. In conjunction with this, at least one additional stand of black beech will be established within Tiromoana Bush.
Transwaste has also developed a new large wetland in middle Kate Valley, to add to the existing network of natural wetlands in the vicinity.
During the operational life of the landfill, Transwaste will directly fund the conservation and restoration work. Over the same period, the Company will establish a production plantation forest on other land in the Kate Valley area. Once the landfill has closed, revenue from the forestry activity will provide a sustainable source of funding for ongoing conservation management of Tiromoana Bush.
All management work at Tiromoana Bush is guided by the Tiromoana Bush Restoration Project Management Plan. This was initially written in April 2004 and updated in March 2005. The plan has a 5-year life and covers the years 2005/06 to 2009/10.