Appendices 5-13 - Nautilus Cares - Nautilus Minerals

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Stochastic modelling was carried out for 100 samples using random commencement time periods over a calendar year from late August 2006 to late August 2007. The model was performed on each discharge scenario for a continuous discharge including the additional surface waters used for predilution, over an 8 day period. Deep sea water currents and some bathymetry data were provided by the client and used in this modelling. 2.3 Deep Sea Temperature and Current Data Modelling was performed using the ADCP-A current data (provided by the client) dated from 20/8/2006 to 25/8/2007. This ADCP-A was a 300kHz ADCP deployed on top of the Solwara 1 mound (at 1,500 m depth) looking upwards. This current data was analysed and entered into the modelling system. The analysis of this year long current data at 6m above the mound is summarized in Figure 2.1 (as a current rose) and corresponds to the approximate location of the operation. Figure 2.1 shows that the currents are relatively weak at these depths. Figure 2.1 also shows that flow directions are typically north- northeast and westsouthwest, which corresponds to the tidal axis at these depths. The median current speed just above the mound is only 7 cm/s (0.07 m/s), the maximum speed recorded at this depth was 35 cm/s, however only 5% of the current speeds exceeded 15 cm/s. Page 7 of 24
Figure 2.1. Data from the ADCP at 6 m above the seabed presented as a summary current rose plot. Directions in this plot reflect the direction that the current flows to. Figure 2.2 shows the temperature profile at the Solwara 1 prospect site during December 2005. From this figure, it is noted that the surface temperatures were greater than 30°C while temperatures at the bottom were approximately 3°C. The data in Figure 2.2 demonstrates that the water column in the Bismarck Sea is stable and layered since temperature decreases as depth below the water surface increases. Note also that the top of thermocline starts around 200 m. Page 8 of 24
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Project director David Gwyther Proj
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Appendix 8 Juvenile Amphipod Whole
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10-day Survival of M. plumulosa Pag
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Centre for Environmental Contaminan
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Centre for Environmental Contaminan
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Appendix 9 Elutriate Testing Report
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Table of Contents 1. Introduction 3
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These elutriate tests were designed
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2. An aliquot(s) of sample after ce
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Table 1: pH, redox (Eh), conductivi
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1440 minutes which is also consiste
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Concentration (ppb) 250.0 200.0 150
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Concentration (ug/kg ore) (log scal
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Zinc sulfide is the most soluble of
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Table 5: Major ions in 0.45 !m filt
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3.5 Comparison to ANZECC/ARMCANZ (2
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5. References ANZECC/ARMCANZ (2000)
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Appendix 2: Phase 1: Metal concentr
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Appendix 4: Phase 1: Normalised dat
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Appendix 6: Phase 2: Quality contro
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Appendix 8: Metal concentrations in
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Page 157 and 158: MODELLING THE DISPERSION AND SETTLE
Page 159 and 160: TABLE OF CONTENTS 1 EXECUTIVE SUMMA
Page 161 and 162: 2 MODELLING METHODOLOGY AND DATA 2.
Page 163 and 164: 2.3 The SSFATE Model Sediment dispe
Page 165 and 166: Earth Mechanics Institute of the Co
Page 167 and 168: 3 RESULTS AND DISCUSSION The calcul
Page 169 and 170: Table 3.1. Summary of areas covered
Page 171 and 172: Figure 3.3b. Sediment bottom thickn
Page 173 and 174: Figure 3.3d. Sediment bottom thickn
Page 175: 4 REFERENCES Swanson J.C., Isaji T.
Page 179 and 180: MODELLING THE DISPERSION OF THE RET
Page 181 and 182: TABLE OF CONTENTS 1 EXECUTIVE SUMMA
Page 183 and 184: Given the range of tidal and basin
Page 185: dispersion is modelled using a rand
Page 189 and 190: 2.5 Outfall Configuration and Assum
Page 191 and 192: 3 RESULTS AND DISCUSSION 3.1 Diluti
Page 193 and 194: Figure 3.1. Snapshot in time of a
Page 195 and 196: 5.0 km at any time during the disch
Page 197 and 198: Figure 3.2. The expected (or averag
Page 199 and 200: Figure 3.4 A zoomed in comparison o
Page 201 and 202: 5 REFERENCES Bear, J. and Verruijt,
Page 203: Rusin J., Lunel T. and Davies L., 1
Page 207 and 208: Prediction of underwater noise asso
Page 209 and 210: Table of Contents 1 Introduction ..
Page 211 and 212: 1 Introduction This report presents
Page 213 and 214: 2 Methods 2.1! Source modelling Cav
Page 215 and 216: dB re 1uPa @ 1m 200 195 190 185 180
Page 217 and 218: Figure 3. Source location for the s
Page 219 and 220: Depth (m) 0 500 1000 1500 2000 2500
Page 221 and 222: Figure 7. Plots of predicted receiv
Page 223 and 224: Figure 9. Zoomed view of plots of p
Page 225 and 226: Figure 11. Predicted maximum level
Page 227 and 228: for computing a is given in Fisher
Page 229 and 230: ecent studies have indicated that c
Page 231 and 232: sources to close range, and that th
Page 233 and 234: masking ranges for different marina
Page 235 and 236: References Fisher, F. H., Simmons,
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Appendix 14 The Potential for Natur
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'leaky' and recent lava flows have
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iii.) Incrementally these 1 m swath
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Appendix 15 Stakeholder Consultatio
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Environmental Impact Statement Solw
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Wewak (22 October 2007) Not recorde
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San Diego (17-18 April 2008) Enviro
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