and associated actions to minimise or prevent damage by floods and river erosion.
In 2018/2019, all flood control schemes will be maintained to the 1 in 100 year levels of protection or to the
standard set in the relevant asset management plan for minor schemes. Rainfall and river levels will be
monitored and timely flood warnings issued.
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21
Recreation, culture and heritage
Facilitate the continued development and maintenance of Yarrow
both camps during the period
under review. NPDC remain under abatement notice at both camps to comply with their consent conditions.
Exceedances of discharge limits occur intermittently as a result of high rainfall and groundwater infiltration
into the wastewater networks. Exceedances during peak holiday periods are also influenced by higher camp
occupancy and the increased wastewater volumes generated. Both consents are currently in the process of
being renewed. Solutions to the current
mostly through
coarse sand without intercepting significant soil moisture. Pit construction revealed
mostly coarse sand at the pit bases (approximately 3-4 m below surface).
Average annual rainfall for the site is 1043 mm (taken from the nearby Patea
monitoring stations). As with the other South Taranaki coastal sites, the Vanner site is
subject to strong winds predominantly from the N-NW at average speeds of 10-20
knots (taken from Hawera automated weather station).
The Mangaroa
The following was found during the inspections:
6 July 2022
Turangi Production Station: The level in the skimmer pits were above the discharge pipe after heavy rainfall
overnight. The valves had been shut to prevent discharge and to allow for sediment to settle out. The
discharge point looked good with no adverse effects observed in the area or downstream. It was noted that
a pump was located alongside the stream for the taking of water. A drip tray was located under the pump,
the composting process in the initial phase.
Any rainfall runoff and leachate that is generated on pad 3, drains into a series of ponds for treatment
referred to as the pond treatment system (PTS). Between each pond is a baffle that skims off any floating
hydrocarbons as the leachate passes through. These ponds also treat the leachate and stormwater from pad
1 where greenwaste and sheep skin is routinely composted. The treated liquid from PTS is then irrigated to
cut and carry pasture on
estuaries such as the Tongaporutu, Waitara
and Pātea rivers, and the confines of Port Taranaki.
The Taranaki region has a temperate climate with
generally abundant rainfall. The 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 1: The Taranaki Region
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17
The people
Figures from the 2018 census
this recognised ecosystem had been taken into account in the setting of
buffer distances and location of the stockpiling facilities.
The predominant soil type has been identified as gravelly sand and vegetation growth consists of native
bush which transitions into pasture. Average annual rainfall for the site is 1,942 mm (taken from the nearby
‘Stratford’ monitoring station).
The stockpiling facility located at Surrey Road is operated under one consent (7559-1.4). This consent allows
Freshwater physicochemical environmental monitoring report 2016-2017
failure of the pumps and warning alarms. Heavy rain on 15 December 2021
resulted in the Hector Place pump station overflowing to the Tasman Sea for approximately nine hours.
Overflows from Hector Place also occurred on 6 and 13 February 2022 as a result of very heavy rainfall
(Cyclone Dovi).
Environmental effects of exercise of consents
Monitoring of system performance indicated that a high standard of effluent quality was produced by the
oxidation pond and series of two wetlands.