protect waterways and GW2 Develop a groundwater model in a process that involves ongoing referral to the Independent All GW001 to waterway function and GW059 Environmental Auditor consistent with the Australian Groundwater Modelling Guidelines (Barnett surface water and et al, 2012). Apply the model for the detailed design phase to predict impacts associated with groundwater quality in any changes to construction techniques or operational design features proposed during detailed accordance with design, and reconfirm that the Environmental Performance Requirements and mitigation statutory objectives, to measures are sufficient to mitigate impacts from changes in groundwater levels, flow and quality. identify and prevent The groundwater model should be updated to address comprehensively; transient calibration, potential adverse aquifer specific storage parameter values and their justification, prediction of cumulative impacts environmental effects during construction and uncertainty assessments. resulting from the disturbance of Undertake monitoring during construction to ensure that predictions are accurate and mitigation contaminated or measures are appropriate. material and to manage excavation GW3 Develop and implement a Groundwater Management Plan (GMP) detailing groundwater All GW001 to GW059 spoil and other waste management approaches to address the predicted impacts to groundwater dependent values in accordance with during construction. relevant best practice The GMP must be based on the detailed design phase groundwater model, and should include principles the following details: Approach to collection, treatment and disposal of groundwater collected during construction in accordance with the MMRA Groundwater Disposal Strategy Identifying and if necessary, specifying mitigation measures to protect groundwater dependent vegetation during periods of drawdown An approach identified in consultation with the EPA so that contaminant migration cause no significant impacts on beneficial uses and vapour intrusion into underground structures, and establish appropriate monitoring networks to confirm effectiveness of approach Methods for minimising drawdown in areas of known PASS and establishing appropriate monitoring networks to confirm effectiveness of approach
protect waterways and waterway function and surface water and groundwater quality in accordance with statutory objectives, to identify and prevent potential adverse environmental effects resulting from the disturbance of contaminated or material and to manage excavation spoil and other waste in accordance with relevant best practice principles GW2 Develop a groundwater model in a process that involves ongoing referral to the Independent Environmental Auditor consistent with the Australian Groundwater Modelling Guidelines (Barnett et al, 2012). Apply the model for the detailed design phase to predict impacts associated with any changes to construction techniques or operational design features proposed during detailed design, and reconfirm that the Environmental Performance Requirements and mitigation measures are sufficient to mitigate impacts from changes in groundwater levels, flow and quality. The groundwater model should be updated to address comprehensively; transient calibration, aquifer specific storage parameter values and their justification, prediction of cumulative impacts during construction and uncertainty assessments. Undertake monitoring during construction to ensure that predictions are accurate and mitigation measures are appropriate. All GW001 to GW059 GW3 Develop and implement a Groundwater Management Plan (GMP) detailing groundwater management approaches to address the predicted impacts to groundwater dependent values during construction. The GMP must be based on the detailed design phase groundwater model, and should include the following details: Approach to collection, treatment and disposal of groundwater collected during construction in accordance with the MMRA Groundwater Disposal Strategy Identifying and if necessary, specifying mitigation measures to protect groundwater dependent vegetation during periods of drawdown An approach identified in consultation with the EPA so that contaminant migration cause no significant impacts on beneficial uses and vapour intrusion into underground structures, and establish appropriate monitoring networks to confirm effectiveness of approach Methods for minimising drawdown in areas of known PASS and establishing appropriate monitoring networks to confirm effectiveness of approach All GW001 to GW059
MM-Environmental-Performance-Requirements_IAC-Revision-3_Clean.docx