Appendix K – Road Transport Assessment
Mt Arthur Coal Open Cut Modification Muswellbrook NSW Road Transport Assessment
12S1431000 19/12/12
Mt Arthur Coal Open Cut Modification
Muswellbrook, NSW
Road Transport Assessment
Issue: A 19/12/12
Client: BHP Billiton Reference: 12S1431000 GTA Consultants Office: NSW
Quality Record Issue Date Description Prepared By Checked By Approved By A 19/12/12 Final Penny Dalton Brett Maynard BDM
© GTA Consultants (GTA Consultants (NSW) Pty Ltd) 2012 The information contained in this document is confidential and intended solely for the use of the client for the purpose for which it has been prepared and no representation is made or is to be implied as being made to any third party. Use or copying of this document in whole or in part without the written permission of GTA Consultants constitutes an infringement of copyright. The intellectual property contained in this document remains the property of GTA Consultants. Table of Contents
Table of Contents
1. Introduction 1 1.1 Background 1 1.2 Purpose of this Report 1 2. Mt Arthur Coal Open Cut Modification 4 2.1 Site Location 4 2.2 Existing Operations at Mt Arthur Coal Mine 4 2.3 Approved Mt Arthur Consolidation Project 6 2.4 Overview Description of the Modification 8 2.5 Modification Construction Road Transport Implications 9 2.6 Modification Operational Road Transport Implications 11 2.7 Modification Scenarios 13 3. Road Network 15 3.1 Road Hierarchy 15 3.2 Road System 15 3.3 Historic Traffic Volumes 18 3.4 Traffic Volumes and Composition 20 3.5 Road Safety 22 4. Other Developments in the Region 26 4.1 Mount Pleasant Project 26 4.2 Bengalla Coal Mine 28 4.3 Mangoola Coal Mine 30 4.4 Drayton Coal Mine 31 4.5 Drayton South Coal Project 32 4.6 Cumulative Impacts of Other Developments 32 5. Future Traffic Conditions 35 5.1 Background Traffic Growth 35 5.2 Future Daily Traffic Volumes 35 5.3 Future Peak Hourly Traffic Volumes 37 5.4 Roadway Capacity 39 5.5 Edderton Road and Denman Road Intersection 41 5.6 Road Safety 42 5.7 Measures to Maintain or Improve Capacity, Efficiency and Safety 43 6. Conclusions 44
12S1431000 19/12/12 Mt Arthur Coal Open Cut Modification, Muswellbrook, NSW Issue: A Road Transport Assessment Page: i Table of Contents
Figures Figure 1-1: Regional Location 2 Figure 2-1: Aerial Photograph of Mt Arthur Coal Mine Open Cut Modification and Traffic Survey Locations 5 Figure 2-2: Provisional Modification Development Schedule 10
Tables Table 2.1: Daily Mt Arthur Coal Consolidation Project Traffic (vehicles/day) 6 Table 2.2: Daily Traffic Volumes with Approved Mt Arthur Consolidation Project (vehicles/day) 7 Table 2.3: Peak Daily Construction Modification Traffic 2014 (vehicles/day) 11 Table 2.4: Daily Operational Mt Arthur Coal Mine Traffic (vehicles/day) 13 Table 3.1: Annual Average Daily Traffic 1992 to 2010 19 Table 3.2: Existing Traffic Volumes on Edderton Road and Mt Arthur Coal Mine Access Road 20 Table 3.3: Existing Daily Traffic Composition on Edderton Road and Mt Arthur Coal Mine Access Road 21 Table 3.4: Crashes on Edderton Road (Denman Road to Golden Highway) 22 Table 3.5: Crashes on Thomas Mitchell Drive (Denman Road to Mt Arthur Coal Mine Access Road) 23 Table 3.6: Crashes on Denman Road (Thomas Mitchell Drive to West of Edderton Road) 24 Table 4.1: Daily Operational Mount Pleasant Mine Traffic (vehicles/day) 27 Table 4.2: Estimated Mangoola Modification Daily Traffic Generation (vehicles/day) 31 Table 5.1: Background Growth in Daily Traffic (vehicles/day) 35 Table 5.2: Daily Traffic Volumes With and Without Modification (vehicles/day) 36 Table 5.3: Peak Hour Traffic Volumes With and Without Modification (vehicles/hour) 38 Table 5.4: Level of Service on Two-Way Two Lane Roads 39 Table 5.5: Percent Time-Spent-Following versus Two-Way Flow Under Base Conditions 40 Table 5.6: Midblock Levels of Service 40 Table 5.7: Two-Way Peak Hour Traffic at Edderton Road/Denman Road Intersection