of the bores to be monitored and abandoned, and those investigated during the
site visit 28
Figure 12 Groundwater elevations GND0599 and GND0600 – southern bores 30
Figure 13 Groundwater elevations GND2691 and GND2693 – south east 31
Figure 14 Groundwater elevations GND2700, GND2701 and GND2703 – west 32
Figure 15 Groundwater elevations in the deep bore GND0599 in comparison to rainfall 33
Figure 16 Groundwater elevations in shallow bores GND0600, and GND2702 in comparison to
previous two years for comparison 41
Figure 32 Estimated monthly mass of nitrogen irrigated 42
Figure 33 Monthly rainfall totals and median soil moistures 42
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vii
Figure 34 Estimated monthly mass of phosphorus irrigated 42
Figure 35 Paddock numbering, Farm 1 46
Figure 36 Paddock numbering, Farms 2 and 3 47
Figure 37 Total nitrogen concentration of soil samples taken from the Company’s irrigation areas, June
2021 49
Figure 38 Olsen phosphorus of soil
inspection and 27 mm of rainfall had been recorded over the previous week at the
Brooklands Zoo weather station. Pond SV8000 contained 900 m3 of stormwater, while SV9000 was full at
275 m3 and had overtopped into SV9100. The ponds had a clear appearance with some wind-blown pollen
with no sheen or odours noted. The incinerator was still offline, but was expected to be recommissioned in
October. Site housekeeping was excellent. All roadways and stormwater catchments were clean.
5 November 2020 …
NPDC Waitara wastewater treatment plant consent monitoring report - Taranaki Regional Council.
irrigation areas were found to be working well, however during the September
inspection it was noted that care needed to be taken when irrigating after rainfall as this increases the
likelihood of ponding.
2.1.2 Results of abstraction and discharge monitoring
2.1.2.1 Waingongoro River abstraction
Process and operation water for the site is pumped from the Waingongoro River, which is located 7.2 km
east from the Company site (Figure 1). Water is pumped at a rate of approximately 140 m3/h
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8
2 Results
2.1 Inspections
23 July 2019
The step screen was isolated with electrical contractors on site to undertake repairs. Influent wastes (solids)
were fully contained. The primary pond level was slightly high due to recent heavy rainfall throughout the
catchment. The pond was a turbid dark green brown. All aerators were operating with the exception of the
large Fonterra aerator. Biobugs continue to be dosed into the pond. Two black swans and approximately 30 …
after
intense rainfall on 19 and 20 June resulted in
widespread flooding and slips and severe
disruptions to roading and electricity networks
throughout Taranaki. A Civil Defence State Of
Emergency was declared at 9pm on Saturday
20 June, and remained in place for a week.
The heaviest rain was in inland South Taranaki
but throughout the region, about 60 local roads
were blocked by slips and washouts and in at
least one case, repairs are expected to take
system and gentle rolling
topography make its lower extents exceptionally well suited to intensive agriculture. Here the average herd
size is larger meaning that farming is more intensive than in the other FMUs. The frequent, and often
intense rainfall events that occur on Taranaki Maunga erode the river banks and carry runoff from the
surrounding land. This results in rivers and streams that are muddy and brown for a few days following each
event.
Figure 1 The Volcanic Ring
November 2022 and 1 March 2023) are presented
in Table 3, along with a summary of the historical data. Ammoniacal nitrogen results can fluctuate due to
factors like recent grazing, topography of the surrounding area and/or leachate generation from additional
stormwater infiltration. Since 2017 ammoniacal nitrogen has been consistently below 10 g/m3-N. Figure 3
shows ammoniacal nitrogen results since 2005. Some of the higher results (e.g. 2015), can be attributed to
heavy rainfall preceding
receiving waters in the Herekawe Stream.
Scheduled inspections were carried out on 27 September and 4 December 2019, and 25 February and 5
June 2020.
Notes from these visits are summarised below. Records of production and incinerator operation were
inspected and found to be satisfactory.
27 September 2019
The weather was fine with strong westerly winds. Rainfall of 36 mm had been recorded over the previous
week at the Brooklands Zoo monitoring station. Stormwater pond SV8000 contained …