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porosities to estimate likely values of the hydraulic diffusivity (D). If κ is permeability (10 mD, 100 mD, and 1000 mD), µ is the viscosity of water (0.3 x 10-3 Pa.s at 100oC), φ is porosity (10, 20, and 30%), and βF is the compressibility of water (5 x 10 - 10/Pa) we can calculate a range of representative values for hydraulic diffusivity using (Talwani & Acree, 1984): Fμφβ κ=D D ranges over two orders of magnitude, from 0.67 m2/s to 67 m2/s, because of the corresponding range of observed

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Policy and Planning Agenda February 2024

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16.6 Alterations to monitoring programme for 2023-2024 67 17 Summary of recommendations 69 Glossary of common terms and abbreviations 70 Bibliography and references 72 Appendix I Resource consents held by industries in the Waitaha Catchment (alphabetical order) Appendix II Categories used to evaluate environmental and administrative performance List of tables Table 1 Resource consents held in the Waitaha Catchment 4 Table 2 Receiving water sampling results,

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Operations and Regulatory Committee Agenda November 2024 WEBSITE

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64 3.3.5 Data review 65 3.4 Results – Water 65 3.4.1 Inspections 65 3.4.2 Results of discharge monitoring 65 3.5 Results - Air 66 3.5.1 Review of flaring data 66 3.6 Results - Land 67 3.6.1 Reservoir pressure and injection pressure data review 67 3.7 Results – Pipeline 68 3.8 Annual report by Contact Energy 68 3.9 Investigations, interventions, and incidents 69 3.10 Discussion 69 3.10.1 Discussion of performance 69 3.10.2 Environmental effects of exercise of consents

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nitrogen g/m3 240 < 0.90 Sulphate g/m3 199 47 Total sulphur g/m3 67 16 Total barium g/m3 44 197 Total bromine g/m3 37 21 Total copper g/m3 0.0013 0.0100 Total iron g/m3 0.93 3.50 Total manganese g/m3 11 11 Total mercury g/m3 < 0.00008 0.00015 Total nickel g/m3 0.020 0.019 Total zinc g/m3 0.036 0.191 Formaldehyde g/m3 < 0.02 0.08 Methanol g/m3 < 2 < 2 Ethylene glycol g/m3 < 4 < 4 Propylene glycol g/m3 < 4 < 4 C7-C9 g/m3 3 101 C10 - C14 g/m3

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Taranaki climate hazards & extremes - high winds & tornadoes (NIWA, 2007).