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
Executive Audit and Risk Agenda May 2023
in April
2023 indicate that the scheme had had little to no effect on the communities prior to this latest sampling
event. This could be attributed to the frequent rainfall during summer, as these flow conditions reduce the
influence of the HEP scheme activities. This is evident in the significant improvements in the
macroinvertebrate community health at the impact sites, while the control site was in average to above
average health. Consequently, based on the current (and previous) survey
Policy and Planning Committee Agenda July 2024
rainfall events, or if animals have direct access to waterways. Human faecal
contamination of waterways can occur via poorly treated sewage or septic tank systems, or during heavy rain
when sewerage systems cannot cope and they overflow into stormwater systems. Because of these
heightened health risks from runoff and stormwater, people are often advised to avoid swimming for 48 hours
after prolonged or heavy rain.
There are two distinct components to assessing the suitability of a site for
STDC Opunake wastewater system consent monitoring report - Taranaki Regional Council.
STDC Opunake wastewater system consent monitoring report - Taranaki Regional Council.
collects
water from an approximately 136 km2 catchment that originates near the summit of Mount
Taranaki.
The climate is generally mild, with relatively high humidity and fairly high, evenly
distributed annual rainfall - with a catchment-wide annual rainfall of approximately 3,500
mm. The soils are typically volcanic, and include deep ash soils and well-drained alluvial
soils along the rivers. Slopes within the catchment range from gently undulating to
strongly rolling.
The
the abattoir in the 2014-15 period 5
Figure 3 Sites monitored for discharge or receiving environment water quality 15
Figure 4 Concentrations of total nitrogen and total phosphorus in the irrigated
wastewater. 17
Figure 5 Daily abstraction volume for the 2014-15 period, from the Kahouri Stream. 18
Figure 6 The irrigation areas, showing the cut and carry paddocks (green) and
regular paddocks (blue). 19
Figure 7 Flow in the Patea River at Skinner Rd and rainfall data (27 October 2014 to