EGL Ref: 8983 23 June 2022 Page 27 WAI-985-000-REP-LC-0004_Rev0.docx This report shall only be read in its entirety. Table 6: STORAGE 3 EXTERNALLY SOURCED MATERIAL QUANTITIES Item Quantity Units Drainage metal and filter sand 13,200 to 15,800 m3 Roading metal 4,800 to 5,800 m3 Rockfill lining 2400 to 2900 m3 Geotextile 53,000 to 64,000 m2 ABS Subsoil Pipes (80 to 150mm dia.) 12,100 to 14,500 m PE Subsoil Pipes (110mm dia.) 1,000 to 1,200 m Geomembrane (HDPE) 270,000 to 330,000 m2 Tailings Underdrains 220,000 to 260,000 m2 Sumps (i.e. 2.3m dia. manholes) 75 to 90 m Concrete 360 to 430 m3 Culverts (1.5m dia.) 70 to 90 m Collection sys. PVC pipes (225mm dia.) 900 to 1100 m Decants 2 No. Embankment surface water PVC pipes 2600 to 3200 m PE Delivery and Return Pipes 3200 to 3800 m
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