fluctuate in response to volume.
Table 13 Summary of injection via the Waihapa-5 well (2018-2021)
Period Annual volume
(m3)
Max. injection
volume
(m3/day)
Max. injection
rate
(m3/hr)*
Max. injection
pressure
(bar)
Avg. injection
pressure
(bar)
2020-2021 277 53 11 0 0**
2019-2020 - No injection during the monitoring period
2018-2019 208,768 1,549 67 85 30
* calculated using daily volume and hours ** well is operating as a vacuum
page
fluctuate in response to volume.
Table 13 Summary of injection via the Waihapa-5 well (2018-2021)
Period Annual volume
(m3)
Max. injection
volume
(m3/day)
Max. injection
rate
(m3/hr)*
Max. injection
pressure
(bar)
Avg. injection
pressure
(bar)
2020-2021 277 53 11 0 0**
2019-2020 - No injection during the monitoring period
2018-2019 208,768 1,549 67 85 30
* calculated using daily volume and hours ** well is operating as a vacuum
page
43
5. Temporal trends in groundwater quality 45
5.1. Trend results 45
6. Discussion 50
6.1. State of regional groundwater quality 50
6.1.1. Suitability of groundwater for potable water supply 51
6.2. Temporal trends in groundwater quality 52
6.3. National context 52
6.4. Overall assessment of regional groundwater quality 53
7. Conclusion 55
7.1. Recommendations 56
Glossary of common terms and abbreviations 57
Bibliography and references 59
Appendix I …
Raine
N W Walker
C S Williamson
Apologies Councillor M G Davey
Notification of Late Items
Item Page Subject
Item 1 3 Confirmation of Minutes
Item 2 10 Consents and Regulatory Committee Minutes
Item 3 19 Policy and Planning Committee Minutes
Item 4 26 Regional Transport Committee Minutes
Item 5 33 Executive, Audit and Risk Committee Minutes
Item 6 39 Joint Committee Minutes
Item 7 53 2018 Local Government New Zealand Conference
Item 8 57 Meeting Dates
28 170 720 900 450 370 330 630 300 94
COD g/m3 75 4700 100 450 850 880 850 410 580 920 540 300
Total nitrogen g/m3N 47 174 47 108 93 98 98 126 118 118 93 120
Ammonia nitrogen g/m3N 76 190 12.9 95 74 60 82 100 102 94 62 112
Total phosphorus g/m3P 63 38 6.8 18 17 14 15 12 18 20 20 10
Sodium g/m3 75 241 75 108 104 100 106 91 107 120 99 93
Potassium g/m3 74 347 22 104 90 96 116 53 108 114 102 36
Calcium g/m3 73 76 11 28 22 29 22 16 30 30 24 18
Magnesium g/m3 73 11 2.5
zones – modelled water demand (after Rout, 2003)
Zone No Take rate
(L/s / Ha)
Daily volume
(m3/Ha)
Annual volume
(m3/Ha)
Application depth
(mm)
1 0.40 31 2,200 44
2 0.51 40 4,840 44
3 0.58 46 6,400 32
4 0.67 53 5,120 32
5 0.63 50 4,200 30
6 0.63 50 3,600 30
7 0.53 42 4,000 50
8 0.46 37 3,960 44
As illustrated in Figure 4, most of the pasture irrigation in Taranaki takes place within
a 10 km wide belt of coastal land stretching from Oakura
STOS Kapuni wellsites hydraulic fracturing consent monitoring report - Taranaki Regional Council.
table - NPDC 46
Table 19 Summary of performance for NPDC’s consent 4302-2 48
Table 20 Chemical monitoring results for Nexans’ cooling water and eastern stormwater discharge, site
STW001025 51
Table 21 Chemical monitoring results for NPDC’s central drain and Nexans’ western stormwater
discharge, site STW001011 52
Table 22 Summary of performance for Nexans’ consent 4497-3 52
Table 23 Summary of performance for Nexans consent 5417-2 53
Table 24 Results from monitoring of
Avg. injection
pressure
D4HST2
(bar)
2020-2021 2.49 1.8 36 9 9
2019-2020 17,404 160 50 28 29
2018-2019 6,646 146 53 14 23
2017-2018 31,168 177 50 33 38
2016-2017 12,164 116 45 26 26
2015-2016 19,276 198 39 23 22
2014-2015 11,310 133 39 17 17
2013-2014 20,827 146 40 31 31
2012-2013 23,677 144 41 21 17
Note * Consent conditions were updated 18 December 2018 and limits were removed
Figure 4 Manutahi-D cumulative daily injection volumes and