the extent of historical filling in the area as shown in Figure 3. During the year under review,
monitoring showed that the levels of BOD, unionised ammonia and ammoniacal nitrogen were elevated in
relation to the landfill tributary, which may have been as a result to the high rainfall and agricultural
activities around the headwaters of the roadside tributary.
During the year under review, the water quality results from the Tawhiti Stream sites show that the inflow
from the roadside
Tawhiti Catchment consent monitoring report 2016-2017.
pH pH 6.7 6.5 6.4 6.4 6.5 - 8.5
Suspended solids g/m3 28 4 30 5 100
Turbidity NTU 16 - 4.8 - -
page
15
2.1.3 Results of consent holder monitoring
2.1.3.1 Stormwater monitoring by SENZL
SENZL monitors the combined stormwater discharge from the site, with sampling
triggered by rainfall events. Table 3 shows the results obtained during the 2015-2016
monitoring year. Hydrocarbons, suspended solids and chloride levels were all below
the limits set by consents
sampled, it was clear and slightly turbid
with slight foaming visible in the stream. No sheen or odour was apparent.
18 March 2016
A total of 65.5 mm rainfall had been recorded in the previous week at NPWWTP,
58 mm of which fell during the day prior to the inspection. This had rapidly filled the
site's stormwater ponds. While the water was being tested by DAS on the afternoon of
the 17th March, permission was sought and given by the Council to allow the ponds to
overflow to the
Greymouth Petroleum Kaimiro production station consent monitoring report - Taranaki Regional Council.
Trustpower Mangorei hydro scheme consent monitoring report - Taranaki Regional Council.
Waitaha catchment (Bell Block industrial) consent monitoring report
Remediation hearing - submitters' expert evidence - Ngāti Mutunga (Kathryn Jane McArthur)
2020-2021 monitoring period
2.1.4.2 Discharges to the Kahouri Stream
The Company recorded 17 occasions where stormwater was discharged to the Kahouri Stream during the
2020-2021 monitoring period. This occurred during high rainfall events. Stormwater monitoring is
undertaken by the Company.
2.2 Results of receiving environment
incised nature of ring plain
streams means that flooding is not a major problem.
However, occasional intense rainfall events can lead to
rapid rises in river levels and flooding in hill country
valleys and elsewhere.
Figure 2: The Taranaki Region
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16 2017/2018 Annual Report
THE PEOPLE
Figures from the 2013 census show the total population
of Taranaki stands at 109,608, an increase of 5.3% over
the 2006 census figure. In the previous