GW4 Use the Groundwater Disposal Strategy and GMP to obtain a Trade Waste Agreement with the All Construction/ GW055, relevant Water Retailers for groundwater disposal. Operation GW056 GW5 Develop and implement a groundwater monitoring plan as part of the GMP that details sufficient All Construction GW017, monitoring of drawdown to verify that no significant impacts occur from potential: GW019, GW021, Contaminant migration on the beneficial uses of groundwater at third party properties GW025, caused by drawdown and vapour intrusion to underground structures GW027, Activation of PASS and groundwater acidification GW028, GW029, Reduction in access to water for bore owners in the area around the project GW030, Reduction in access to groundwater for trees– particularly in the Tunnels precinct between GW033, CBD South and Domain stations, and the CBD South station and eastern portal precincts GW038, Change in groundwater levels in any existing recharge bores that may be present in the GW039, area around the project. GW045, GW046 Also refer to the following Environmental Performance Requirements for GM1, AE3, AE6 ‘Groundwater’: Ground Movement and Land Stability Land Stability To GM1 Develop and maintain geological and groundwater models (as per GW2) All Design/ GM001 to – avoid or minimise Construction GM025 Use monitored ground movement and ground levels prior to construction to identify adverse effects on movement land stability that might Inform tunnel design and the construction techniques to be applied for the various arise directly or geological and groundwater conditions indirectly from project works Assess potential drawdown and identify trigger levels for implementing additional mitigation measures to minimise potential primary consolidation settlement Assess potential ground movement effects from excavation and identify trigger levels for implementing additional mitigation measures to minimise potential ground movement effects. GM2 Design and construct the permanent structures and temporary works to limit ground movements All Design/ GM001 to to within appropriate acceptability criteria (to be determined in consultation with relevant Construction/ GM025 stakeholders) for vertical, horizontal, and angular deformation as appropriate for project Operation activities during the construction and operational phase. GM3 Develop and implement a ground movement plan for construction and operational phases of the All Construction/ GM001 to project that: Operation GM025
GW4 Use the Groundwater Disposal Strategy and GMP to obtain a Trade Waste Agreement with the relevant Water Retailers for groundwater disposal. All Construction/ Operation GW055, GW056 GW5 Develop and implement a groundwater monitoring plan as part of the GMP that details sufficient monitoring of drawdown to verify that no significant impacts occur from potential: Contaminant migration on the beneficial uses of groundwater at third party properties caused by drawdown and vapour intrusion to underground structures Activation of PASS and groundwater acidification Reduction in access to water for bore owners in the area around the project Reduction in access to groundwater for trees– particularly in the Tunnels precinct between CBD South and Domain stations, and the CBD South station and eastern portal precincts Change in groundwater levels in any existing recharge bores that may be present in the area around the project. All Construction GW017, GW019, GW021, GW025, GW027, GW028, GW029, GW030, GW033, GW038, GW039, GW045, GW046 Also refer to the following Environmental Performance Requirements for ‘Groundwater’: GM1, AE3, AE6 Ground Movement and Land Stability Land Stability – To avoid or minimise adverse effects on land stability that might arise directly or indirectly from project works GM1 Develop and maintain geological and groundwater models (as per GW2) Use monitored ground movement and ground levels prior to construction to identify movement Inform tunnel design and the construction techniques to be applied for the various geological and groundwater conditions Assess potential drawdown and identify trigger levels for implementing additional mitigation measures to minimise potential primary consolidation settlement Assess potential ground movement effects from excavation and identify trigger levels for implementing additional mitigation measures to minimise potential ground movement effects. All Design/ Construction GM001 to GM025 GM2 Design and construct the permanent structures and temporary works to limit ground movements to within appropriate acceptability criteria (to be determined in consultation with relevant stakeholders) for vertical, horizontal, and angular deformation as appropriate for project activities during the construction and operational phase. All Design/ Construction/ Operation GM001 to GM025 GM3 Develop and implement a ground movement plan for construction and operational phases of the project that: All Construction/ Operation GM001 to GM025
MMRP_Chapter-23_Environmental-Management-Framework.docx