Hurstville REF - Transport for NSW - NSW Government

Control MeasuresSite specific Erosion and Sediment Control measures will be identified as part of ECM. Theproposed measures will be in accordance with the ‘Blue Book’ (Managing Urban Stormwater:Soils and Construction 4 th Edition (Landcom, 2004), and will be implemented during theconstruction phase. The measures will include, but not be limited to, those outlined below.All spoil will be transferred directly to skip bins or stockpiled appropriately.Appropriate stockpiling of materials will take place away from drainage lines, waterwaysand drains.Soil that may be contaminated or weed infested will be stockpiled separately before beingremoved from the site.Sediment fences and bunds will be installed and inspected regularly.The tracking of soils on public roads will be prevented by using appropriate shakergrids/ballast pads.Soil will be removed from public roads and other paved areas using dry street sweepers orother measures.Disturbed areas will be reinstated, if required.During maintenance activities, spills will be attended to and treated in an appropriate andtimely fashion in accordance with TfNSW procedures.4.2 Water Quality and HydrologyExisting SituationThe nearest waterway, Poulton Creek (which flows into Oatley Bay), is about one kilometresouthwest of the site and forms part of the Georges River catchment. The suburban stormwatersystem is situated along the main roads (i.e. access driveway off Forest Road) and some drainsmay be close to the construction footprint.Flood mapping for the proposed site location is not provided by Hurstville City Council, howevergiven the locations topography and proximity to waterways, flood risk is considered to be lowPossible RisksThere is a risk that the local underground water table may be reached and groundwater mayappear during pile boring activities. While this is not expected to occur at this site due to thedistance from the site to the nearest body of water, it remains the major risk in respect of waterquality and hydrology. The CEMP and Water Management Plan will contain procedures tomanage this risk if it eventuates.Page 33 of 75