science research project
development opportunities and strategies for regional
councils, to enhance knowledge base for policy development
and implementation. Projects with clear relevance and benefit
to Taranaki to be adopted by "Envirolink" and other funding
opportunities (advocacy to be reported through Council's
annual report processes).
Envirolink projects are underway: a revised national High Intensity
Rainfall Design System, and development of Discrete Water
51. From the submissions of the Uruti residents that were heard by the Committee, the
following points were raised in relation to the proposed wastewater discharges:
• Concerns of rainfall events which exceed the capacity of the ponds and the
wastewater then entering the Haehanga and Mimi catchments; and
• That there is no detailed reinstatement clause which requires the removal of
raw or composted material, the cleaning of treatment ponds, and the testing of
soil in the irrigation
around the piggery. The grunt area was only producing a small discharge which was
flowing directly back to the effluent collection area. Ken G Moratti Ltd (agricultural
contractors) spray irrigated effluent from the second pond onto a near-by cropping
paddock (as per Consent 0715 Special condition 9). The final pond had discharged to
the Waiongana Stream on 3 November 2013 after a heavy rainfall period.
Insignificant odour was emanating from around the ponds. Overall, the wastewater
treatment
of service. Moving faster is not prudent due to the range of other priorities outlined
in this document.
page
2024/2034 Long-Term Plan 9 Consultation Document
Issue 3
Addressing
climate change
As the impacts of climate change
intensify, we are considering how we
can best support climate action
in Taranaki.
Climate change will have wide-ranging impacts
on Taranaki. Temperature is expected to increase
by between 0.5°C and 1.5°C by 2040, while rainfall
will
is 10 L/s. However as a result of stormwater inputs to the pond, the discharge
rate from the pond to the Mangorei Stream will be highly variable as it is dependent on weather conditions.
The size of the pond will allow storage for a 10% annual exceedance event (AEP) event. The maximum
discharge rate from the pond during large rainfall events is 1,060 L/s as this is dictated by the size of the
page
5
outfall pipe (750 mm). However there is also provision for the pond
Normally these discharges are in batches with a frequency ranging from daily to weekly, dependent on
rainfall. During and after exceptionally heavy rainfall, the discharge may occur for continuous periods of up
to 24 hours.
In 2021-2022, the maximum daily volume of stormwater discharged from the site was 6,063 m3/d following
rainfall of 120 mm and 87 mm. Given the extremely high rainfall and that there was only one minor non-
compliance instance above the 6,000 m3/d limit the Company was
STDC Opunake wastewater system consent monitoring report - Taranaki Regional Council.
STDC Opunake wastewater system consent monitoring report - Taranaki Regional Council.
devices shall be telemetered and report the data electronically to the Chief Executive once
per day, and shall include the rainfall data at hourly intervals from the station established at
the Mangaotea Road culvert.
A land use consent for the damming of the Mako Stream via an existing dam structure to form
Lake Ratapiko for hydro-electric power generation purposes, including the service and auxiliary
spillway structures
page
Trustpower – Proposed Conditions
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