Friends of Grasslands
supporting native grassy ecosystems
PO Box 987
Civic Square ACT 2608
Phone: 02 62.. ....
Mr David Rhind
Commonwealth and Territories Section
Environment Assessment Branch
Department of the Environment, Water Heritage and the Arts
PO Box 787 Canberra ACT 2600
02 6274 2611
Murrumbidgee to Googong water transfer development
Reference Number: 2009/5124
In considering this development proposal, FOG notes that a number of measures have been or are proposed to minimise the impact on environmentally sensitive areas (such as investigating an appropriate pipeline crossing point to avoid impact on potential Swainsona recta habitat within railway land). FOG supports reduction of construction and scour widths in areas that contain endangered ecological communities (EECs) and/or threatened species habitat, preferably to 15m if possible.
FOG supports the mitigation measures outlined, and asks that they be included in development contracts to ensure that they are implemented fully. A particular danger with a project such as this is the spread of weeds into areas that are currently relatively free of weed, especially given the presence of noxious weeds such as African love grass, serrated tussock and Chilean needle grass in some areas along the pipeline route. All of the measures suggested in the detailed proposal description available to the public (e.g. development of a weed distribution map, undertaking a pre-construction weed control program in areas likely to pose potential weed dispersal problems, implementing strict vehicle hygiene controls, and identifying and fencing off “no-go” zones and sensitive areas adjacent to the construction corridor) should be adhered to. In addition, vehicles should remain solely within the construction easement and on roads, and works in weed-infested areas should be scheduled when weeds are not carrying seed. FOG urges commencement of pipeline construction to be within areas that contain low conservation value vegetation so that the time delay between vegetation removal and subsequent rehabilitation is minimized, especially within high conservation value communities in the ACT and Gibraltar “saddle” area.
Presumably the pipeline will require ongoing maintenance, necessitating a service track along its route. There needs to be commitment to cleaning of service vehicle and weed control in the long term, as well as during the construction phase. A program to eliminate all noxious weeds along the pipeline route before construction and to monitor and eliminate re‑infestations would assist in prevention of weed spread in the longer term.
The proposal mentions preparing a vegetation monitoring strategy to record the progress of the rehabilitation effort for a minimum two year period. Such a strategy should include longer term monitoring to ensure that rehabilitation has been effective and that construction and ongoing maintenance activities do not lead to the long term spread of weeds within high quality grassland areas through which the pipeline passes. There are a number of examples of other such developments where rehabilitation was inadequate and the infrastructure corridor is marked by a swathe of weeds, e.g. the north-south gas pipeline, and eastern gas pipeline and water pipelines across Canberra Nature Park. Active weed control should continue for an extended period, not the short two year period mentioned in the proposal. One option is to require, under the contract, a 10 or 20 year bond, which could be used to cover government expenses in rectifying any weed problems that occur in high quality grassland and grassy woodland areas post-construction, or returned to the developer at the expiration of the bond period if rehabilitation is satisfactory.
FOG notes that the current proposal includes rehabilitation and conservation of an area of biodiversity conservation land of in excess of 60 ha containing existing remnant vegetation, as offsets for three separate projects in the Williamsdale area, including offsets for the removal and/or modification of approximately 16.7 ha of native vegetation for this project. FOG notes that it is preferable that offsets not be needed at all. If loss of EECs becomes essential, then FOG sees it as important that proposed offsets do in fact deliver a net improvement in biodiversity over time. The principle that offsets and their actions must be enforceable through development consent conditions, license conditions, conservation agreements or a contract should be part of this project.
Further information about the rehabilitation and offset plans was sought at the information session for the project, but has not been forthcoming. FOG notes that ACTEW intends to seek advice from all relevant regulators throughout the development of the offset plan. However, there is no mention of consultation with interested community groups such as FOG, or any provision for community groups to comment on the offset plan. The offset and rehabilitation plans should be agreed to by the community, then finalized, before any construction work commences on the project.
Given the number of development proposals happening in this area of the ACT, FOG is concerned about fragmentation of grassland and grassy woodland habitat. We also find it difficult to gain an overview of what is happening to the higher quality grassy ecosystems in the area when we are not advised as to the final location and status of offsets provided for previous developments (such as the Transgrid Transformer Electricity Substation and Subtransmission Line projects in the Williamsdale area). As other infrastructure developments will be proposed in this area of the ACT in the future (e.g. commercial solar power generation), an integrated approach to planning this infrastructure while maintaining biodiversity of the grassy ecosystems in the area is needed. FOG would be happy to provide comments on or be involved in any community consultation about such an integrated planning approach. Again, such an integrated approach should be developed and agreed to prior to construction work commencing on the Murrumbidgee to Googong Water Transfer project.
FOG is a community group dedicated to the conservation of natural temperate grassy ecosystems in south-eastern Australia. FoG advocates, educates and advises on matters to do with the conservation of grassy ecosystems, and carries out surveys and other on-ground work. FoG is based in Canberra and its more than 200 members include professional scientists, landowners, land managers and interested members of the public.
19 October 2009