Extraction Plan - Peabody Energy

Extraction Plan – North Wambo Underground Mine Longwalls 7 and 8SGWRPSMPthe SMPGuidelineSWMPTARPTGTSMPS&MPSurface and GroundwaterResponse PlanSubsidence Management PlanGuideline for Applications forSubsidence Management PlanApprovals (Department ofMineral Resources, 2003).Surface Water MonitoringProgramTrigger Action Response PlantailgateThreatened SpeciesManagement PlanSalvage and ManagementProgrammeVCPWAMPWCPLWHCWHCMMPWHEZWMP° degree% percentVegetation Clearance ProtocolWCPL Asset ManagementPlanWambo Coal Pty LimitedWambo Homestead ComplexWambo Homestead ComplexMine Management PlanWambo Homestead ExclusionZoneWater Management Plan6.2 GLOSSARYNote: Terms in bold are defined in the Development Consent (DA 305-7-2003), the majority of theremaining definitions are adopted from the SMP Guideline.AlluvialAngle of DrawAquiferBaseflowCumulativeSubsidenceDevelopmentConsentEnvironmentalConsequenceFaultFirst WorkingsGeologicalStructuresGoafA general term for clay, silt, sand and gravel transported by water and deposited,on the bed of a floodplain, river or stream.The angle between the vertical and the line joining the edge of the mining void withthe limit of vertical subsidence, usually taken as 20 mm.A sub-surface rock formation containing water in recoverable quantities.The discharge of sub-surface water into a stream (i.e. groundwater seepages).The total subsidence effects resulting from all seams mined up to and including theWambo Seam (i.e. future workings not included in this Extraction Plan are notincluded in the cumulative subsidence prediction).Development Consent DA 305-7-2003 for the Wambo Coal Mine was granted on 4February 2004 by the then NSW Minister for Urban Affairs and Planning underPart 4 of the NSW Environmental Planning and Assessment Act, 1974.The environmental consequences of subsidence impacts, including: damage toinfrastructure, buildings and residential dwellings; loss of surface flows to thesubsurface; loss of standing pools; adverse water quality impacts; development ofiron bacterial mats; cliff falls; rock falls; damage to Aboriginal heritage sites;impacts on aquatic ecology; ponding.Major fracture of the earth’s crust caused by the relative movement of the rockmasses on either side.Underground workings which establish access to the coal resource area.Geological structures are faults, igneous intrusions, joints or any other significanttype of discontinuity or disturbances within the rock strata.The mined-out area into which the immediate roof strata break.EP/SMP LW7-8 Rev B December 2012 Page 69