created no noticeable visual effects in the
receiving environment. The site was deemed compliant at the time of inspection.
11 December 2023
The inspection occurred during fine weather; there had been heavy rainfall during the previous day. Upon
arrival, the site gates were shut and locked. There was no change to the site since the last inspection as no
new material had been discharged. The swale contained water which was not discharging to the tributary.
No dust or odour issues were noted
the
second inspection there had been 16.5mm of rainfall at the Waiwhakaiho meteorological station. The
pond was full and flowing slowly to the vegetated swale. The flow into the farm drain was a trickle and
could not be sampled.
The consent also imposes contaminant limits on water quality of the farm drain beyond a mixing zone
of approximately 7m. During each inspection there was no water flow in the farm drain. The second
inspection noted a few puddles in the drain. The drain is well
timely results during the
holiday periods. Follow up samples were often collected following instances where enterococci counts
exceeded 140 cfu/100 ml.
During the 2017-2018 summer season, 89% of the 245 scheduled samples remained within surveillance
mode. January, February and March were the months where the highest proportions of samples exceeded
the MfE guidelines. These three months also received considerably higher levels of rainfall than normal.
Four of the five highest
with no unauthorised overflows to the stream of any nature. Two incidents of
stormwater/sewage overflows were reported in the Konini Street area of the township due
to surcharging of the reticulation under very heavy rainfall conditions. Reactivation of an
alarmed and telemetered overflow site has been necessary to alleviate sewage entry to
domestic property. Signage requirements have been recognised and provided for should
such events re-occur.
Pond microfloral monitoring which had
heavily fished.”
Kayaking and rafting
The Waiwhakaiho River is one of the five main whitewater kayaking rivers in Taranaki, along
with the Stony, Mangorei and Manganui Rivers and Kiri Stream. The Waiwhakaiho is navigable
from the National Park to the sea, and flow recommendations are for after rainfall at 20m3/s,
although it is possible to ‘scrape by with less’.
There is no advertised commercial rafting on the Waiwhakaiho River, but it is offered by
TOPEC as one of their adventure
Operations and Regulatory Committee Agenda April 2025
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page
Site Monitoring
Purchased YSI hand held Multi Meter & YSI Photometer
Sample monitoring bores, streams and ponds every week
Update the sampling graphs weekly
Download the rainfall data weekly
Walk the streams weekly ..,.. I'1!i'I ...-"'-
YSI 9300 and 9500 photometers... ~ USER M,\NUAI.
User Manual
page
Irrigation Pond ManagementIrrigation Model
Proactive management of the pond volume/level
Default
Policy and Planning Agenda March 2025
Low-elevation
Lake
GM
M
H
L
Lk
GM: M and % permanent ice > 1.5%
M: > 50% annual rainfall volume above 1000m ASL
H: 50% rainfall volume between 400 and 1000m ASL
L: 50% rainfall below 400 m ASL
Lk: Lake influence index2 > 0.033
Level 3 Geology Alluvium
Hard sedimentary
Soft sedimentary
Volcanic acidic
Volcanic basic
Plutonics
Miscellaneous
Al
HS
SS
VA
VB
P
M
Category = the spatially dominant geology
was compliant with current stormwater management plan and
contingency plan.
Environmental effects of exercise of consents
Potential environmental effects on the receiving environment at this site include contamination by
hydrocarbon spills and increased sediment during high rainfall events. These effects are considered to be a
low likelihood and no evidence of negative environmental effects were identified during inspection.
Evaluation of performance
A tabular summary of the