10.2.3 Air discharge monitoring 59
10.2.4 Investigations, interventions, and incidents 63
10.3 Discussion 63
10.3.1 Discussion of plant performance 63
10.3.2 Environmental effects of exercise of consents 63
10.3.3 Evaluation of performance 64
10.3.4 Recommendations from the 2017-2018 Annual Report 66
10.3.5 Alterations to monitoring programmes for 2019-2020 66
10.3.6 Exercise of optional review of consent 67
10.4 Recommendations 67
11 TBS Coatings Ltd 68
11.1
.................................................................................................................. 66
14.3 Kapoaiaia Stream at lighthouse ............................................................................................ 67
14.4 Patea River at Stratford ........................................................................................................ 69
14.5 Tangahoe River ..................................................................................................................... 70
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3
14.6 Mangaoraka River at Corbett Road
Investigation of air quality arising from flaring of fracturing fluids (2012) - appendices.
1.47
pH pH 6.9 5.9 6.3 6.2 6.8 6.5
Propylene glycol g/m3 - - - <4 - <4
Sulphate g/m3 2.4 6.1 5.5 5.7 7.2 6.3
Total dissolved solids g/m3 67 82 100 104 110 103
Toluene g/m3 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
o-Xylene g/m3 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
m-Xylene g/m3 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Dissolved zinc g/m3 <0.001 0.0061 0.0139 0.011 <0.001 <0.001
Bromide g/m3 - 0.07 0.10 - - -
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19
As outlined
Summary of performance for Consent 5337 66
Table 37 Summary of performance for Consent 5845 67
Table 38 Summary of performance for Consent 6257 68
Table 39 Summary of performance for Consent 6273 69
Table 40 Summary of performance for Consent 7465 71
Table 41 Summary of performance for Consent 9908-1 71
List of figures
Figure 1 Tawhiti Stream flow (m3/second) at Duffy’s Farm, from 1 July 2016 to 1 July 2017 21
Figure 2 Approximate stormwater catchments at the Whareroa
3.3.4 Chemical sampling 62
3.3.5 Data review 62
3.4 Results – Water 62
3.4.1 Inspections 62
3.4.2 Results of discharge monitoring 62
3.5 Results - Air 63
3.5.1 Review of flaring data 63
3.5.2 Reservoir pressure and injection pressure data review 64
3.6 Results – Pipeline 65
3.7 Annual report by Contact Energy 66
3.8 Investigations, interventions, and incidents 66
3.9 Discussion 67
3.9.1 Discussion of performance 67
3.9.2 Environmental effects of exercise of consents 67
performance for Consent 6391-1 64
Table 28 Summary of performance for Consent 6381-1 64
Table 29 Summary of performance for Consent 6385-1 66
Table 30 Summary of performance for Consent 6386-1 67
Table 31 Summary of performance for Consent 6387-1 67
List of figures
Figure 1 Main features of the Trustpower Motukawa HEP Scheme including relevant consents 4
Figure 2 Continuous water temperature monitoring sites in the Manganui River in relation to the
Motukawa HEP scheme 18
performance for Symons Property; Consent 7805-1 53
Table 27 Results of sampling at Taranaki Sawmills – tributary headwaters (WTH000051) 62
Table 28 Results of stormwater sampling at Taranaki Sawmills – tributary upstream of confluence with
Waitaha Stream (WTH000059) 62
Table 29 Summary of performance for Taranaki Sawmills: Consent 2333-4.3 67
Table 30 Summary of performance for Taranaki Sawmills: Consent 4096-2 67
Table 31 TBS - particulate deposition monitoring sites 73
Table 32
performance for uncontaminated stormwater
consent 4620-1 67
Table 26 Summary of performance for discharge to land consent
4621-1 68
Table 27 Summary of performance for composting air consent 4622-1 68
Table 28 Summary of performance for air discharge consent 4779-1 69
Table 29 Summary of performance for earthworks stormwater
consent 6177-1 70
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iv
List of figures
Figure 1 Aerial view of the Colson Road landfill 5
Figure 2 Aerial photo showing the
tributary of the Mangatoki Stream 66
Table 27 Summary of performance for Consent 3928-2 to discharge
uncontaminated overflow water from the Inaha rural water
supply treatment plant 66
Table 28 Summary of performance for Consent 4102-2 to construct a
low-level weir and fish pass across the Mangatoki Stream to
improve water intake efficiencies 67
Table 29 Summary of performance for Consent 5364-1 to take and use water
from the Mangatoki Stream for Inaha rural supply scheme purposes 67