for further treatment prior to discharge to the
Tasman Sea. This option utilises the existing ponds at Inglewood for attenuation
during peak rainfall events.
During extreme peak flows (i.e. when stormwater and groundwater infiltration is
excessive), overflows from the pond were likely to occur given the limited amount of
attenuation available. Accordingly, overflow facilities are to be utilised during peak
storm flows to treat pond effluent before discharge to the stream occurs. No
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
page
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
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
first newsletter
of 2022.
We hope everyone has been able to relax
and enjoy the wonderful summer
weather we have been having although
the rain that is falling this weekend is
very welcome from a gardening point
of view. Here in New Plymouth, albeit
the sunniest city in New Zealand, rain
fell on 4 days in January giving a total of
12.5ml. Yesterday alone we had 180ml,
twice the normal rainfall for February.
Most of you will have received the 2022
Calendar of Events with the January
nitrogen per hectare per year (KG/HA/YR), often called units of N.
This is the difference between the total units of nitrogen
brought onto the farm and the total units of nitrogen that
leave the farm as products.
A high amount of surplus nitrogen can indicate an inefficient
conversion of available nitrogen into milk protein.
Climate information including
rainfall data as supplied by NIWA.
IMPORTED SUPPLEMENTS
(OR FROM STORAGE)
EXPORTED SUPPLEMENTS
(OR STORED)
2012/13 resulting in a build up of windborne salt
spray on the site which was washed into the stormwater system by significant rainfall prior to
sampling. No adverse effects were noted on the receiving waters at the time of this discharge.
There were no adverse effects on the environment as a result of discharges to air at the
Pohokura facility. Inspections showed that emissions to air from flaring and other sources
were well controlled, producing no adverse offsite effects. Self-monitoring by
Figure 1 SEM beach bathing bacteriological survey sites
page
9
4. Results
From 9 November 2010 to 12 April 2011 a total of 13 samples were collected at each
site for the purpose of state of the environment monitoring (SEM). Whenever
possible, no SEM sampling was undertaken within three days following significant
river freshes. However, occasionally sampling was affected by localised rainfall and
elevated river flows. An additional seven samples were taken at five of
7
2 Results
2.1 Water
2.1.1 Inspections
26 October 2018
Scheduled inspection undertaken by two investigating officers. It was noted that rainfall had occurred the
night before. The wash pad was active at the time of inspection. Water discharging from the site appeared
visually very slightly turbid and downstream of the discharge was clear. Scheduled samples were taken. New
ponds had been installed as per proposed in the consent review application and the quarry size had
NPDC NP wastewater treatment plant consent monitoring report - Taranaki Regional Council.
properties are rural in character. The
nearest towns are Stratford which is 10 km to the south east and Inglewood which is 12 km to the north.
The predominant soil type has been identified as gravelly sand, and vegetation growth transitions from
native forest at the edge of the national park to pasture. The average annual rainfall for the site is 1,942 mm
based on the Stratford meteorological station.
1 The Council has used these