Review of Environmental Factors - Transport for NSW - NSW ...

4 Environmental Impact and Risks4.1 Landforms, Geology and SoilsExisting SituationThe proposed site is inside the existing railway corridor about 13 metres east of the track. The area is in acleared area with a grass, gravel and ballast surface cover and a slight slope (refer Figure 5). The geologycomprises Quartz and lithic “fluvial” sand, silt and clay and the soil comprises the Fairy Meadow soil landscapetype, the limitations of which include low wet bearing strength and subject to high seasonal water levels.The area is not mapped as containing Acid Sulphate Soils (NSW Department of Natural Resources).Figure 5Photo of site, looking southwestPotential ImpactsExcavation 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 andwaterways. Sediment deposition and fine particles in suspension within waterways have direct impact on waterquality and aquatic life.Given the site characteristics and the scope and size of the proposed work, it is expected that erosion andsediment risks is minimal and can be effectively managed through the implementation of standard measures asPage 29 of 67