12 February 2020
20137096-009 Rev A
Table of Contents
1.0 INTRODUCTION .........................................................................................................................................5
2.0 BACKGROUND ..........................................................................................................................................5
3.0 DESIGN PARAMETERS AND CRITERIA..................................................................................................5
3.1 Design codes and guidelines ............................................................................................................5
3.2 Design parameters ............................................................................................................................ 6
3.3 Stability requirements ........................................................................................................................ 9
4.0 STORAGE CAPACITY .............................................................................................................................10
5.0 EMBANKMENT DESIGN .......................................................................................................................... 11
6.0 BORROW MATERIAL ..............................................................................................................................12
7.0 FOUNDATION INVESTIGATION .............................................................................................................12
8.0 EMBANKMENT STABILITY .....................................................................................................................13
9.0 PROVISONAL BILL OF QUANTITIES.....................................................................................................13
10.0 PRELIMNARY COSTING .........................................................................................................................13
10.1 Project execution basis and scope .................................................................................................14
10.2 Estimate contingency ......................................................................................................................14
10.3 Assumptions and Exclusions ..........................................................................................................15
10.4 Costing summary ............................................................................................................................15
11.0 WAY FORWARD ......................................................................................................................................16
TABLES
Table 1: Design parameters and criteria summary ..............................................................................................6
Table 2: Stability Factor of Safety guidance (ANCOLD 2012). ............................................................................9
Table 3: Tailings storage volume sin the TSF. ...................................................................................................10
Table 4 : Cumulative material quantities. ...........................................................................................................12
Table 5: Summary of Bill of Quantities. ..............................................................................................................13
Table 6: Provisional Costing Summary (Class 4) ...............................................................................................16
Table 7: Provisional Bill of Quantities. ................................................................................................................21
FIGURES
Figure 1: TSF capacity stage storage curve.......................................................................................................11
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