Appendices 5-13 - Nautilus Cares - Nautilus Minerals

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Figure 2.2. Temperature profile at the Solwara 1 prospect site during December 2005. 2.4 Bathymetry High resolution digital bathymetry of the Solwara 1 prospect site was provided by the client. Additional digital bathymetry of the Manus Basin region was sourced by APASA for modelling purposes. In Figure 2.3 the bathymetry profile for the study area is provided with the identification of the discharge location at 152° 5.7’ E 3° 47.34’ S which is approximately 1,500 m deep. This bathymetry data was imported into the CHEMMAP system onto a bathymetric grid using 500 x 500 grid cells, each at 60m x 60m resolution. Page 9 of 24
2.5 Outfall Configuration and Assumptions This study focussed on quantifying the dilution of the discharge plume under worst-case conditions and assumptions. This approach (worst-case input data for the modelling) then quantifies the worst-case extents of dilution. In practice, the results of mixing are expected to be better than those presented herein. The outfall pipe extends from the surface to approximately 20-30 m above the mound at the Solwara 1 lease site. At the bottom, the pipe will be split into two discharge pipes, both pointing vertically upwards. The temperature of the discharge will range from 5.8 °C to 11.4 °C. The two pipes will be located diagonally opposite at the lower end of the pump module frame, approximately 7.5m apart. It is anticipated that each pipe will be approx. 6 & 5/8" (170mm) internal diameter (I.D.). Nominal discharge rate will be of the order of 2002.5 gpm through each pipe (i.e., a total discharge of 4005 gallons/minute) being 5 parts production water and 1 part surface water. The following parameters were assumed as input to the model. • Discharge rate of 2002.5 gpm through each of two pipes • Discharge salinity is the same as the receiving water salinity • Discharge water temperature range is 5.8 °C to 11.4 °C • Receiving water temperature is 3 °C • Discharge pipe diameter is 170 mm internal diameter • Discharge pipe facing directly upwards at 1,475m below sea level • Starting concentration of discharge plume after pre-dilution is set to 833,333,333 PPB (part per billion or 83.3% return production water). Page 10 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 and 186: dispersion is modelled using a rand
Page 187: Figure 2.1. Data from the ADCP at 6
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,
Page 237: 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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Appendices 5-13 - Nautilus Cares - Nautilus Minerals

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