Subsidence Management Plan - Quetools
Subsidence Management Plan - Quetools Subsidence Management Plan - Quetools
• Far Field Effects. The two existing far field effects monuments have beenplaced approximately 400m apart above Longwalls 12 and 13, adjacent tothe Mt Owen Rail Spur. The two proposed far field effects monuments willalso be placed approximately 400m apart above Longwalls 14 and 15.The survey monuments comprise 500mm or 600mm Feno Marks placed flushto the ground to minimise the possibility of disturbance and injury to wildlifeor stock. If Feno Marks cannot be placed, other suitable substitute surveymonuments shall be employed.In all subsidence surveys, unless otherwise specified, survey best practice willbe employed to achieve sub 0.010m accuracy in the ‘x’, ‘y’ and ‘z’ axes. Thisaccuracy level conforms to the following classes as per the ISCM standards.• EDM: Class C• GPS: Class C• Angles: Class C• Differential Levelling: Class C6.3 NATURAL FEATURESBettys CreekA specific management plan has been developed for Bettys Creek (Annex D) tomonitor main channel flow, bed and bank stability, erosion andsedimentation, riparian vegetation and flooding.Cross sections have been surveyed along Bettys Creek (Sections 1 to 7 onFigure 2) downstream of XMO’s Eastern Rail Pit. These cross sections havebeen located so as to provide sufficient data for hydrological analysis andmanagement, especially pertaining to the monitoring of the main channelflow. The sections will be re-surveyed at the completion of Longwalls 10, 11,12 and 13 utilising appropriate methods so as to provide the required accuracyto meet management plan requirements.In addition, water level loggers, along with flow gauging and sedimentdeposition monitors, will be installed in the creek at the railway bridge anddownstream of the Application Area to monitor changes in the creek due toweather variations, XMO operations and subsidence activity.Drainage Paths and ChannelsA specific management plan has been developed for surface drainage (AnnexE) which identifies the specific monitoring programs designed to identifyENVIRONMENTAL RESOURCES MANAGEMENT AUSTRALIA 0038321/FINAL/3 JANUARY 20078
changes to drainage paths and channels resulting from subsidence. Themonitoring of subsidence impacts will comprise three phases and will beundertaken prior to mining the establish baseline data, during mining toidentify any subsidence impacts and implement management measures, andat the completion of mining to establish that no further subsidence impacts arelikely. The Surface Drainage Subsidence Management Plan was developedbased on the outcomes of consultation with the landowners and advice fromspecialist consultants.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 monitoring has beenrecommended.Land Prone To InundationA specific management plan has been developed for surface drainage (AnnexE) which identifies the specific monitoring programs for ponding resultingfrom subsidence. The Surface Drainage Subsidence Management Plan wasdeveloped based on the outcomes of consultation with the landowners andadvice from specialist consultants.Water Related EcosystemsNo significant impacts are predicted for water-related ecosystems as a resultof subsidence (see Section 7.3.1 of the SMP Application – Written Report) andno specific monitoring has been recommended.Threatened and Protected SpeciesNo significant impacts are predicted for threatened and protected species as aresult of subsidence (see Section 7.3.1 of the SMP Application – WrittenReport) and no specific monitoring has been recommended.Natural VegetationNo significant impacts are predicted for natural vegetation as a result ofsubsidence (see Section 7.3.1 of the SMP Application – Written Report) and nospecific monitoring has been recommended.ENVIRONMENTAL RESOURCES MANAGEMENT AUSTRALIA 0038321/FINAL/3 JANUARY 20079
- Page 3 and 4: CONTENTS1 INTRODUCTION1.1 SCOPE 11.
- Page 5 and 6: 1 INTRODUCTIONThis Application for
- Page 7 and 8: 2 MINE PLANNING2.1 MINING METHODSTh
- Page 9 and 10: 5 COMMUNITY CONSULTATIONGCCM consid
- Page 11: 5.5 RELEVANCE AND ADEQUACY OF CONSU
- Page 17 and 18: Subsidence Management Plan was deve
- Page 19 and 20: In this instance, the principal imp
- Page 21 and 22: Mt Owen Rail Spur Line and Associat
- Page 23 and 24: The monitoring processes described
- Page 25 and 26: impacts be detected through the spe
- Page 27 and 28: and gates and farm dams. These mana
- Page 29 and 30: application for mining approval wou
- Page 31 and 32: allow more detailed and appropriate
- Page 33 and 34: 9 PUBLIC SAFETY MANAGEMENT PLANA Pu
- Page 35 and 36: 10.1.4 Mine Surveyor• Ensure that
- Page 37 and 38: 11 AUDIT AND REVIEW11.1 AUDITAs a m
- Page 39 and 40: Application for Subsidence Manageme
• Far Field Effects. The two existing far field effects monuments have beenplaced approximately 400m apart above Longwalls 12 and 13, adjacent tothe Mt Owen Rail Spur. The two proposed far field effects monuments willalso be placed approximately 400m apart above Longwalls 14 and 15.The survey monuments comprise 500mm or 600mm Feno Marks placed flushto the ground to minimise the possibility of disturbance and injury to wildlifeor stock. If Feno Marks cannot be placed, other suitable substitute surveymonuments shall be employed.In all subsidence surveys, unless otherwise specified, survey best practice willbe employed to achieve sub 0.010m accuracy in the ‘x’, ‘y’ and ‘z’ axes. Thisaccuracy level conforms to the following classes as per the ISCM standards.• EDM: Class C• GPS: Class C• Angles: Class C• Differential Levelling: Class C6.3 NATURAL FEATURESBettys CreekA specific management plan has been developed for Bettys Creek (Annex D) tomonitor main channel flow, bed and bank stability, erosion andsedimentation, riparian vegetation and flooding.Cross sections have been surveyed along Bettys Creek (Sections 1 to 7 onFigure 2) downstream of XMO’s Eastern Rail Pit. These cross sections havebeen located so as to provide sufficient data for hydrological analysis andmanagement, especially pertaining to the monitoring of the main channelflow. The sections will be re-surveyed at the completion of Longwalls 10, 11,12 and 13 utilising appropriate methods so as to provide the required accuracyto meet management plan requirements.In addition, water level loggers, along with flow gauging and sedimentdeposition monitors, will be installed in the creek at the railway bridge anddownstream of the Application Area to monitor changes in the creek due toweather variations, XMO operations and subsidence activity.Drainage Paths and ChannelsA specific management plan has been developed for surface drainage (AnnexE) which identifies the specific monitoring programs designed to identifyENVIRONMENTAL RESOURCES MANAGEMENT AUSTRALIA 0038321/FINAL/3 JANUARY 20078
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