March 2023
Parameter Unit
AWY000103 AWY000105 AWY000107 AWY000100 AWY000115
30 m d/s of
landfill
(culvert
discharge)
130 m d/s of
landfill
400 m d/s
landfill face
u/s of
confluence of
landfill trib
d/s of
confluence
of landfill trib
pH pH 7.4 7.5 7.4 6.7 7.2
Temperature Deg C 18.3 20.0 18.6 18.0 16.4
Alkalinity g/m3
CaCO3 118 109 67 25 44
BOD g/m3 3 3 <2 <2 <2
Conductivity @ 25°C µS/cm 384 347 212 103 156
Dissolved oxygen g/m3 5.59 6.49
CDEM Joint Committee Agenda September 2023
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
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
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
Taranaki climate hazards & extremes - high winds & tornadoes (NIWA, 2007).
Table 32 Tegel stormwater and wetland sampling results, 21 March 2022 63
Table 33 Summary of performance for Tegel consent 3470-4 64
Table 34 Summary of performance for Tegel consent 7389-1 65
Table 35 Summary of performance for Tegel consent 4026-3 66
Table 36 Summary of performance for Tegel consent 5494-2 67
Table 37 TIL stormwater sampling results 71
Table 38 Summary of performance for TIL consent 7578-1 71
Table 39 Summary of performance for TIL consent 6952-1 72
RTC Agenda 1 March 2023 website
Taranaki Regional Council meeting agenda February 2021 - Part 2
10.1.3. Air discharge permit 64
10.2. Results 65
10.2.1. Inspections 65
10.2.2. Results of stormwater discharge monitoring 65
10.2.3. Air discharge monitoring 67
10.2.4. Investigations, interventions, and incidents 70
10.3. Discussion 71
10.3.1. Discussion of plant performance 71
10.3.2. Environmental effects of exercise of consents 71
10.3.3. Evaluation of performance 72
10.3.4. Recommendations from the 2015-2016 Annual Report 74
10.3.5. Alterations to