Wambo Coal AEMR 2010-2011 - Peabody Energy

aemcWambo Coal Mine, Rail Loop and Coal LoaderIndependent Environmental Audit – Minister’s Condition of Approval111213than 5% of the total number of blasts over a period of 12 months atany dwelling or occupied premises as the case may be, unlessdetermined otherwise by the Department of Environment andconservation.(b) Blast OverpressureThe lease holder must ensure that the blast overpressure noise levelgenerated by any blasting within the lease area does not exceed 120dB (linear) and does not exceed 115 dB (linear) in more than 5% of thetotal number of blasts over a period of 12 months, at any dwelling oroccupied premises, as the case may be, unless determined otherwiseby the Department of Environment and Conservation.SafetyOperations must be carried out in a manner that ensures the safety ofpersons or stock in the vicinity of the operations. All drill holes shaftsand excavations must be appropriately protected, to the satisfaction ofthe Director-General, to ensure that access to them by persons andstock is restricted. Abandoned shafts and excavations opened up orused by the lease holder must be filled in or otherwise rendered safeto a standard acceptable to the Director-General.Rehabilitation(a) Land disturbed must be rehabilitated to a stable and permanentform suitable for a subsequent land use acceptable to the Director-General and in accordance with the Mining operations plan so thatthere is no adverse environmental effect outside the disturbed areaand that the land is properly drained and protected from soil erosion. the state of the land is compatible with the surrounding land and landuse requirements. the landforms, soils, hydrology and flora require no greatermaintenance than that in the surrounding land. in cases where revegetation is required and native vegetation hasbeen removed or damaged, the original species must be reestablishedwith close reference to the flora survey included in theMining Operations Plan. lf the original vegetation was not native, anyre-established vegetation must be appropriate to the area and at anacceptable density; . the land does not pose a threat to public safety.NONotedYesOngoingMonitoring data has confirmed that blast overpressure levelsare generally in compliance with the criteria in 11(b):2007-2008: 4 of 109 blasts exceeded 115dBL (i.e. 3.6%)therefore compliant. No blasts exceeded 120dBL.2008-2009: 2 of 102 blasts exceeded 115 dBL (i.e. 2%)therefore compliant. One blast exceeded 120dBL (120.3dBLon 13 October 2008) reported to DECC.2009-2010: 2 of 62 blasts exceeded 115dBL (i.e. 5%)therefore compliant. One blast exceeded 120dBL criteria(122.1dBL on 14 August 2009) reported to DECCW.2010-June 2011: One blast exceeded120dBL (i.e.124.2dBL atMuller monitoring site on 17 February 2011) reported toDECCW.Land disturbed by the Wambo coal operations is rehabilitatedin accordance with the Mining Operations Plan and progress isreported annually in the AEMR‟s.trevor brown & associates 129applied environmental management consultants