TABLE B3: CURRENT CONDITION – DRAINED STRENGTH PARAMETER SET Material (kN/m3) Strength Parameters Porewater Pressure Operational Closure Zone A/I Fill – Sourced from mine overburden or foundation rock undercut 20.5 c’ = 5 kPa ’ = 35 deg ru = 0.1 Phreatic^ Zone A/I Fill – Sourced from foundation undercut ash and alluvium 17.5 c’ = 3 kPa ’ = 31 deg ru = 0.3 Phreatic^ Zone F Fill 20.5 Duncan Gravel/Cobbles with Cu>4 16%ile ru = 0.05 Phreatic^ Zone G Fill 20.5 c’=3kPa ’=31 deg ru = 0.1 Phreatic^ Stockpile (to Zone D2 Rockfill) 19.5 Duncan Gravel/Cobbles with Cu>4 16%ile ru = 0.05 Phreatic^ Stockpile (to Zone D3) 19.0 c’= 5kPa ’ = 31 deg ru = 0.4 Phreatic^ Stockpile (to Zone E) 19.0 c’ = 0 kPa ’ = 26 deg ru = 0.6 Phreatic^ Ignimbrite Rockfill 20.5 Duncan Gravel/Cobbles with Cu>4 16%ile ru = 0.05 Phreatic^ Ash/Surface CW Rhyolite/Dacite/Ign. UCS <0.5MPa SPTN <8 17.0 c’ = 0 kPa ’ = 26 deg ru = 0.1 Phreatic^ EW to VW Rhyolite & EW Ign. And Dacite Rock 17.5 Hoek – EW/VW Rhyolite & EW Dacite/ Ign. Phreatic^ plus ru = 0.1 Phreatic^ W Rhyolite Rock 21 Hoek – W Rhy. Dac. Phreatic^ Phreatic^ VW Ignimbrite Rock 19 Hoek – VW Ign. Phreatic^ Phreatic^ VW Dacite Rock 18 Hoek – VW Dacite. Phreatic^ Phreatic^ W Dacite 25 Hoek – W Rhy. Dac. Phreatic^ Phreatic^ Epiclastic Mat. 17.0 c’=5kPa ’=35 deg Phreatic^ Phreatic^ Paleo Boulder Alluvium 18 c’=5kPa ’=35 deg Phreatic^ Phreatic^ *Phreatic surface assumed at pond water level
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