Supporting Technical Assessments

Table D.2 NRS Permeability Test Data Bore ID Ͳ Shallow Wells Test Aquifer Type Assessed Permeability (m/s) Solution Screen Comments FHT 1 9.6EͲ06 RHT 1 8.9EͲ06 FHT 2 9.9EͲ06 RHT 2 8.1EͲ06 FHT 3 8.4EͲ06 RHT 3 8.2EͲ06 FHT 4 8.8EͲ06 RHT 4 8.7EͲ06 Min Max WRS05 1.0EͲ06 n/a 3 m Screen 2.5 Ͳ 5.5 m Dacite (Completely weathered Ͳ Residual). Data lost; field records noted "similar response to FVN02 timeͲwise", supported by <10 minute test runs. Rounded value similar to FVN02 adopted, which is consistent with dacite WRS results. FHT 1 1.4EͲ06 RHT 1 1.4EͲ06 FHT 2 1.5EͲ06 RHT 2 1.2EͲ06 Min Max FHT 1 Ͳ FHT 4 Not analysed Rapid response RHT 1 Ͳ RHT 4 Not analysed Rapid response Bore ID Ͳ Deep Wells Test Aquifer Type Assessed Permeability (m/s) Solution Screen Comments FHT 1 1.3EͲ06 RHT 1 1.3EͲ06 FHT 2 6.3EͲ07 RHT 2 1.4EͲ06 FHT 3 1.2EͲ06 RHT 3 1.2EͲ06 Min Max FHT 1 2.1EͲ06 Hyder et al, 1994 (KGS model) RHT 1 1.3EͲ07 Butler, 1998 (Confined) FHT 2 1.2EͲ06 Butler, 1998 (Confined) RHT 2 7.5EͲ07 Hyder et al, 1994 (KGS model FHT 3 1.3EͲ06 Butler, 1998 (Confined) RHT 3 1.2EͲ06 Hyder et al, 1994 (KGS model Min Max 3 m screen 3.0 Ͳ 6.0 m Screened across Alluvium (sandy SILT) /Ignimbrite contact (completely weathered Ͳ residual soil). Rapid WL response, screen limited; could not be analysed. Adopted K value > 1x10Ͳ4 m/s. n/a 1.3EͲ07 2.1EͲ06 >1.0EͲ04 Adopted value Adopted Value WRS07 Geomean Unconfined 9.9EͲ06 1.4EͲ06 1.2EͲ06 1.5EͲ06 1.1EͲ06 WRS04 Unconfined 3 m Screen 2.5 Ͳ 5.5 m Ignimbrite (Completely weathered Ͳ Residual Soil, very narrow Ͳ closed joints with strong manganese staining). WRS06 Unconfined 2 m Screen 10 Ͳ 12 m Ignimbrite (completely weathered, very narrow join with manganese staining). Bouwer and Rice, 1976 (Unconfined) Bouwer and Rice, 1976 (Unconfined) Geomean Range: Geomean Range: 8.8EͲ06 8.1EͲ06 WRS04a Confined 3 m Screen 17 Ͳ 20 m Ignimbrite (highly weathered, crush zone with no staining). WRS05a Confined 3 m Screen 13.5 Ͳ16.5 m Dacite (moderately weathered Ͳ highly weathered, crush zone with iron staining, very narrow Ͳ tight fractures with iron and manganese staining). Hyder et al, 1994 (KGS model) Geomean Range: Geomean Range: 6.3EͲ07 1.4EͲ06 8.5EͲ07

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