Subsidence Management Plan - Quetools

7 SUBSIDENCE MANAGEMENT PROCESSES7.1 NATURAL FEATURESBettys CreekGiven that much of the upper catchment of Bettys Creek will be diverted aspart of the Stage 3 XMO diversion, no specific rehabilitation measures areproposed for the natural channel of Bettys Creek or its floodplain. However, aspecific management plan has been developed for Bettys Creek, including theproposed XMO diversion (Annex D).Should significant subsidence-related impacts be detected through monitoringand/or opportunistic inspections, a management process will be developed inconsultation with relevant stakeholders in order to minimise the impacts anddetermine appropriate remediation works required to return the creek,diversion channel and floodplain to a similar state as existed prior tosubsidence.Drainage Paths and ChannelsA specific management plan has been developed for surface drainage (AnnexE) which identifies specific management and remediation measures. Shouldsignificant subsidence-related impacts be detected through the specifiedmonitoring or opportunistic inspections, a management process will bedeveloped in consultation with relevant stakeholders, in order to minimise theimpacts and determine appropriate remediation works required to return thesurface water drainage system to a similar state as existed prior to subsidence.This may include, but is not limited to, draining ponded areas, re-establishingdrainage paths or diverting surface water flows from areas of potentialponding.Aquifers and GroundwaterNo registered groundwater extraction bores are located in the ApplicationArea and no adverse effects are anticipated (see Section 7.3.1 of the SMPApplication – Written Report). Consequently, no specific managementmeasures have been recommended.Land Prone To InundationA specific management plan has been developed for surface drainage (AnnexE) which identifies the specific management and remediation measures forponding resulting from subsidence. Should significant subsidence-relatedENVIRONMENTAL RESOURCES MANAGEMENT AUSTRALIA 0038321/FINAL/3 JANUARY 200718