Supporting Technical Assessments

EGL Ref: 8983 23 June 2022 Page 26 WAI-985-000-REP-LC-0004_Rev0.docx This report shall only be read in its entirety. Table 3: STORAGE 3 SITE STRIPPING AND FOUNDATION UNDERCUT VOLUMES Item Cut Volume (m3) NAF 1,800,000 Topsoil 110,000 Total 1,910,000 *Cut volumes are preliminary estimates only, actual volumes will vary Table 4: STORAGE 3 RL155 FILL VOLUMES BY MATERIAL ZONATION Fill Breakdown Fill Volumes (m3) Zone A Zone B Zone C1 Zone C2 Zone D Zone F Zone G Zone H Zone I Topsoil General NAF Totals Starter Embankment (Crest RL135) 756,000 443,172 207,623 239,696 228,323 629,600 7,300 131,000 2,642,714 RL145 Embankment 49,000 293,840 97,922 221,318 366,389 1,028,470 RL150 Embankment 197,500 138,000 100,000 230,000 1,293,800 486,200 200,000 50,000 2,695,500 RL155 Embankment 80,000 54,250 166,300 257,500 102,500 72,950 733,500 Closure capping 68,000 136,000 204,000 Totals 1,082,500 929,262 405,545 691,015 1,888,512 652,500 457,500 220,500 765,600 80,250 131,000 7,304,184 *Fill volumes are preliminary estimates only, actual volumes will vary Table 5: STORAGE 3 RL155 FILL VOLUMES BY NAF/PAF/TOPSOIL Fill Breakdown Fill Volumes (m3) NAF PAF Topsoil Totals Starter Embankment (Crest RL135) 1,516,600 1,118,814 7,300 2,642,714 RL145 Embankment 49,000 979,470 - 1,028,470 RL150 Embankment 447,500 2,248,000 - 2,695,500 RL155 Embankment 440,000 220,550 72,950 733,500 Closure capping 204,000 - - 204,000 Totals 2,657,100 4,566,834 80,250 7,304,184 *Fill volumes are preliminary estimates only, actual volumes will vary

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