IMPACTS OF LONGWALL COAL MINING ON THE ENVIRONMENT IN NEW SOUTH WALES Total Environment Centre PO Box A176 www.tec.org.au Sydney South 1235 Ph: 02 9261 3437 January 2007 Fax: 02 9261 3990 Email:
[email protected] CONTENTS 01 OVERVIEW 3 02 BACKGROUND 5 2.1 Definition 5 2.2 The Longwall Mining Industry in New South Wales 6 2.3 Longwall Mines & Production in New South Wales 2.4 Policy Framework for Longwall Mining 6 2.5 Longwall Mining as a Key Threatening Process 7 03 DAMAGE OCCURRING AS A RESULT OF LONGWALL MINING 9 3.1 Damage to the Environment 9 3.2 Southern Coalfield Impacts 11 3.3 Western Coalfield Impacts 13 3.4 Hunter Coalfield Impacts 15 3.5 Newcastle Coalfield Impacts 15 04 LONGWALL MINING IN WATER CATCHMENTS 17 05 OTHER EMERGING THREATS 19 5.1 Longwall Mining near National Parks 19 5.2 Longwall Mining under the Liverpool Plains 19 5.3 Longwall Top Coal Caving 20 06 REMEDIATION & MONITORING 21 6.1 Avoidance 21 6.2 Amelioration 22 6.3 Rehabilitation 22 6.4 Monitoring 23 07 KEY ISSUES AND RECOMMENDATIONS 24 7.1 The Approvals Process 24 7.2 Buffer Zones 26 7.3 Southern Coalfields Inquiry 27 08 APPENDIX – EDO ADVICE 27 EDO Drafting Instructions for Legislation on Longwall Mining 09 REFERENCES 35 We are grateful for the support of John Holt in the production of this report and for the graphic design by Steven Granger. Cover Image: The now dry riverbed of Waratah Rivulet, cracked, uplifted and drained by longwall mining in 2006.