Main Volume 1B Part 4

Main Volume 1B Part 4 (pdf)

Contents Pages
15.2 Existing environment 15-4
15.2.1 Soils 15-4
15.2.2 Waterways and riparian zones 15-6
15.2.3 Sensitive receiving environments 15-8
15.2.4 Water quality 15-8
15.3 Assessment of construction impacts 15-10
15.3.1 Construction impacts on soils 15-10
15.3.2 Construction impacts on water quality 15-11
15.4 Assessment of operational impacts 15-14
15.4.1 Operational impacts to soils 15-14
15.4.2 Operational impacts to water quality 15-14
15.5 Management of impacts 15-16
15.5.1 Project design features that manage impacts 15-17
15.5.2 Environmental management measures 15-17
16 Contamination 16-1
16.1 Assessment methodology 16-1
16.1.1 Desktop review 16-1
16.1.2 Site inspection 16-2
16.1.3 Site investigations 16-2
16.1.4 Preliminary conceptual site model 16-2
16.1.5 Study area 16-10
16.2 Assessment criteria 16-10
16.3 Existing environment 16-11
16.3.1 Section 1: West of Homebush Bay Drive to Pomeroy Street 16-11
16.3.2 Section 2: Pomeroy Street to Ismay Avenue 16-13
16.3.3 Section 3: Ismay Avenue to Carrington Lane 16-13
16.3.4 Section 4: Carrington Lane to Broughton Street 16-15
16.3.5 Section 5: Broughton Street to Dobroyd Canal (Iron Cove Creek) 16-16
16.3.6 Section 6: Dobroyd Canal (Iron Cove Creek) to Bland Street (including Wattle Street) 16-18
16.3.7 Section 7: Bland Street to Orpington Street 16-19
16.4 Assessment of construction impacts 16-20
16.4.1 Potential contamination pathways 16-20
16.4.2 Acid sulfate soil impacts 16-23
16.4.3 Contamination resulting from the project 16-23
16.5 Assessment of operational impacts 16-23
16.6 Management of impacts 16-24
17 Flooding and drainage 17-1
17.1 Assessment methodology 17-1
17.1.1 Methodology overview 17-1
17.1.2 Policy and guidance 17-2
17.1.3 Study area and analysis 17-2
17.2 Existing environment 17-3
17.2.1 Catchment descriptions 17-3
17.2.2 Environmental conditions 17-8
17.2.3 Present day flooding conditions 17-8
17.3 Assessment of construction impacts 17-10
17.3.1 Flood risk to the project 17-10
17.3.2 Potential impacts of construction activities on flooding behaviour 17-13
17.4 Assessment of operational impacts 17-17
17.4.1 Flood risk to the project and impact on flooding behaviour 17-17
17.4.2 Potential impacts of future climate change 17-22
17.5 Management of impacts 17-23
17.5.1 Project design features that manage impacts 17-23
17.5.2 Environmental management measures 17-24
18 Groundwater 18-1
18.1 Assessment methodology 18-1
18.1.1 Overview 18-1
18.1.2 Ground and surface water monitoring 18-3
18.1.3 Policy framework 18-3
18.2 Existing environment 18-5
18.2.1 Drainage, topography and geology 18-5
18.2.2 Groundwater levels and movement 18-6
18.2.3 Groundwater quality 18-9
18.2.4 Groundwater dependent ecosystems 18-11
18.2.5 Groundwater users 18-11
18.3 Assessment of construction impacts 18-11
18.3.1 Groundwater inflow rates and recharge 18-11
18.3.2 Impact on groundwater quality and contamination 18-14
18.3.3 Ground movement 18-15
18.4 Assessment of operational impacts 18-16
18.4.1 Groundwater drawdown (continues in part 5) 18-16
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