generally very good. It is noted that the protocol for sampling has changed in the last couple of
years so that samples are collected irrespective of weather or tide, unlike previously where samples were
collected around high tide in fine weather only. Prolonged and/or heavy rainfall will often result in high
levels of enterococci in the samples as these are washed down flooded streams and rivers from farmland.
This can be exacerbated by a low tide where a sea sample collected from a site near a
between the
relatively ‘shallow’ groundwater table and the Haehanga Stream.
This may vary at different times of the year, for example, depending
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5
on rainfall and stream flows. This information is needed to assess
the impact of the discharge to the irrigation areas (and potentially
the composting pads and ponds) on the groundwater and the
subsequent effect due to contaminated groundwater entering
surface water.
18 An initial review undertaken by LEI identified a
industries 2021-2022 compliance monitoring sampling sites
The first of two dedicated stormwater sampling surveys scheduled for 2021-2022 was carried out between
07:30 and 11:00 on 30 November 2021. The survey was preceded by moderate rainfall overnight (23.2 mm)
recorded between 02:00 and 07:00 at Brooklands Zoo rain gauge. Light rain fell intermittently from the
morning to the early afternoon. There had been very little rainfall for 12 days preceding this survey. Samples
collected were also
there will always be a delay
between sample collection, analysis, receiving results and
delivering the public health advice. This is primarily because
bacteria need time to grow in the lab as part of the analytical
process. While we can try to minimise the time between
sample collection and delivery of the information, there will
always be a delay.
By collecting all-weather water quality data, it may be
possible to develop a predictive rainfall risk model, which can
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
Biomonitoring surveys
A biological survey was performed on two occasions on 16 February 2017 and 26 April 2017, in the Kurapete
Stream, to document recovery of the biological stream communities following the removal of a continuous
discharge to the Stream.
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7
2. Results
2.1. Inspections
21 September 2016
An inspection was conducted in wet weather with a southerly wind. The monthly rainfall was 316 mm rain,
as recorded at the Inglewood WWTP TRC weather station.
consent holders, site inspections, and data gathering, review and
assessment for compliance. It was a busy season for the Council’s hydrological unit, as the
weather conditions meant the demand for irrigation was high. All irrigation had commenced
by the middle of December.
Over the five month (summer irrigation) period, Mount Taranaki recorded between 71% and
77% of normal rainfall for which meant that rivers were running well below normal for the
entire period. The low stream flows
REFERENCES,
APPENDIX A
APPENDIX B
APPENDIX C
APPENDIX D
,9
10
MONITORING WELLS- REMEDIATION NEW ZEALAND- URUTI.......... 11
MONITORING BORE INSTALLATION .................................................... 13
SOIL MOISTURE AND RAINFALL RECHARGE ON CHLORIDE
CONCENTRATIONS IN GROUNDWATER ............................................. 15
PRELIMINARY UNCONFIRMED CONCEPTUAL SITE MODEL ............... 1
b'i\f company Commercial in confidence
page
TABLES
Table 2. 1 :Haehanga
Environmental Plan scope covers all the farm accept the vermiculture and composting pads,
the wetlands and the treatment ponds. The range of geology and topography in the catchment
requires specific management practices and these are shown in the operating plans listed below.
5.0 Climate
The climate in the Uruti Valley is generally mild and temperate. Rainfall is high, even in the driest
months of the year, compared to other parts of the region (See Table). Rainfall is measured and
recorded
Agenda Consents Regulatory Committee 15 March 2022