\\na.aecomnet.com\lfs\APAC\Christchurch-NZCHC1\Legacy\Projects\605X\60544823\6. Draft Docs\6.1 Reports\Waihi North\App F - PHREEQC Outputs\WNP_App F_PHREEQC_25.05.22.docx Revision 5 – 07-Aug-2020 Prepared for – Anderson Lloyd – Co No.: 5719274 The post closure and long term modelling values are based on eight scenarios. The eight scenarios had the same groundwater and backfill area ratio, 0.001:0.999 with different sorptions: • Scenario 1 – GW0.001: Backfill 0.999:1 Hfo:mean • Scenario 2 – GW0.001: Backfill 0.999:1 Hfo:95% tile • Scenario 3 – GW0.001: Backfill 0.999:0.5 Hfo:mean • Scenario 4 – GW0.001: Backfill 0.999:0.5 Hfo:95% tile • Scenario 5 – GW0.001: Backfill 0.999:2 Hfo:mean • Scenario 6 – GW0.001: Backfill 0.999:2 Hfo:95% tile • Scenario 7 – LongtermGW0.001: Backfill 0.999:1 Hfo:mean • Scenario 8 – LongtermGW0.001: Backfill 0.999:1 Hfo:95% tile The post closure speciation modelling inputs ran the following steps, 1. Solution 1 (backfilled porewater) was calculated based on predicted seepage for Martha was and considering saturated column data. 2. Solution 2 (Gladstone groundwater)
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