Digital Train Radio System Kingsgrove BTS Site Review of ...

4 Environmental Impact & Risks
4.1 Landforms, Geology and Soils
Existing Situation
The proposed BTS site will be installed in a cleared, grassy area within RailCorp land,
approximately 8 metres north of the track on the Airport & East Hills line.
There has been significant disturbance in the area resulting from the establishment of the
railway line, station buildings and platform. The site is located within the Disturbed Landscapes
soil category which consists of level to hummocky terrain extensively disturbed by human
activity including complete disturbance, removal or burial of soil. Original soil materials have
been removed, greatly disturbed or buried, and soil, rock, building and waste materials may
have been added.
Soil management will be important during construction to minimise the risks to local waterways.
The proposed area is not mapped as containing Acid Sulfate Soils. (Australian Soil Resource
Information System)
A desktop geological review was undertaken for this site. This review did not anticipate the
presence of acid sulphate soils or other contaminated material on site and found the site was
suitable for the proposed use. Since no contaminants are expected, the standard control
measures described below are deemed adequate for this site. Prior to construction UGL will
confirm ground conditions by:
On-site inspections during pre-construction site reviews to confirm desk-top study
predictions.
The drilling of test bore-holes at all sites.
Potential Impacts
Approximately 60 square metres of ground will be disturbed during the proposed works. Soil
and rock from the excavation that is not to be used for backfilling will be placed into skip bins
and removed from the site. The foundation for the monopole will result in approximately five
cubic metres of spoil that will be placed into a skip bin and removed from site at the completion
of construction works.
Excavation and trenching activities may result in erosion if appropriate mitigation measures are
not in place. Soil erosion has the potential to destabilise landforms and deposit sediments in
drainage systems and waterways. Sediment deposition and fine particles in suspension within
waterways have direct impact on water quality and aquatic life.
Given the site characteristics and the scope and size of the proposed work, it is anticipated that
erosion and sediment risks is minimal and can be effectively managed through the
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