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Page i <br />Mt Arthur Coal Open Cut Modification (Project No. G1602) <br /> <br /> <br />TABLE OF CONTENTS <br /> <br />Page No. <br />1.0 INTRODUCTION ..................................................................................................... 1 <br />2.0 PROJECT OVERVIEW ............................................................................................ 4 <br />3.0 SCOPE OF WORK .................................................................................................. 5 <br />3.1 Legislation ............................................................................................................................ 5 <br />3.2 Methodology ........................................................................................................................ 7 <br />4.0 LEGISLATION, POLICY AND GUIDELINES .......................................................... 8 <br />4.1 Water Act 1912 .................................................................................................................... 8 <br />4.2 Water Management Act 2000 ............................................................................................... 8 <br />4.3 Water Sharing Plans ............................................................................................................ 9 <br />4.3.1 Hunter Regulated River Water Sharing Plan ..................................................................... 9 <br />4.3.2 Hunter Unregulated and Alluvial Water Sources Water Sharing Plan ............................. 10 <br />4.4 Buffer Zone Guidelines ...................................................................................................... 11 <br />5.0 PREVIOUS STUDIES ............................................................................................ 13 <br />5.1 Summary of Recent Studies ............................................................................................... 13 <br />5.2 Summary of Relevant Historical Studies ............................................................................ 13 <br />6.0 METHODOLOGY .................................................................................................. 16 <br />7.0 REGIONAL SETTING............................................................................................ 17 <br />7.1 Location ............................................................................................................................. 17 <br />7.2 Surrounding Mining Operations .......................................................................................... 17 <br />7.3 Topography and Drainage.................................................................................................. 17 <br />7.4 Land Use ........................................................................................................................... 17 <br />7.5 Climate............................................................................................................................... 18 <br />8.0 GEOLOGY ............................................................................................................. 21 <br />8.1 Stratigraphy ....................................................................................................................... 21 <br />8.2 Structure ............................................................................................................................ 23 <br />8.3 Leakage from Faults .......................................................................................................... 26 <br />9.0 HYDROGEOLOGICAL REGIME ........................................................................... 27 <br />9.1 Groundwater Use ............................................................................................................... 27 <br />9.2 Conceptualisation Summary .............................................................................................. 27 <br />9.3 Alluvium ............................................................................................................................. 29