as well as ensuring public awareness of the impacts of
stormwater on recreational water quality particularly after a rain event. In the coastal water, where most
people are likely to bathe, counts were well within ‘Surveillance’ mode (MfE, 2003; Table 3). The health risk
overall, was therefore considered to be low.
The addition of groundwater monitoring to the 2023/24 programme allows the Council to track impacts to
groundwater quality from the WWTP. In the first year, groundwater samples
Taranaki By-Products Air and Water Annual Report 2023-2024
on 12 May 2020 42
Table 11 Results of rain event monitoring – discharge and Puremu Stream samples, 2 June 2020 45
Table 12 Results of rain event monitoring - Manganaha Stream, 2 June 2020 45
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iii
Table 13 Biomonitoring sites in the Puremu and Manganaha Streams related to the Colson Road
landfill 47
Table 14 Bore depth and screen depth information for potentially collapsed bores 50
Table 15 Chemical analysis of Colson Road landfill groundwater sampled …
visit. The flow meter read 21.7 L/s, which was slightly over consent limits. The sample
taken from the discharge was only slightly turbid. Further samples were taken from upstream, downstream
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and unnamed tributary sites. The downstream sample results exceeded consent limits for turbidity, however
no enforcement actions were taken at this time due to sampling methodology errors.
01 April 2022
No rain proceeded prior to inspection. At the time of inspection, the
Results are available to the public live on our website. What we find is that water quality of the region’s bathing beaches is generally high, with around 95% of samples meeting New Zealand health guidelines for recreational use. Occasionally water quality can be affected. This is particularly evident after heavy rain when a large volume of river water is discharged to the sea, carrying contaminants such as bird faeces, sediment, urban stormwater, agricultural run-off and so on. In some circumstances
Telemetry $6,050.00 per year
Standard hydrometric equipment $2,144.10 per year
Tangahoe hydrometric equipment $749.00 per year
Tawhiti hydrometric equipment (lower) $1,903.30 per year
Tawhiti hydrometric equipment (upper) $1,177.30 per year
Waingongoro hydrometric equipment $913.60 per year
Waitaha hydrometric equipment $9,709.92 per year
Rain Gauge Calibration $370.30 per deployment
Chlorine Meter $22.90 per use
Drone $145.20 per day
Multi-parameter Field Meter $123.40 per day
Haehanga
stabilisation will be
done using green waste disposed of at the Patea transfer station.
Patea Beach is an elevated site which for most of the time is dry. Rain that does fall on the site drains away
at a very rapid rate. The site does not suffer from flooding from rain or tidal action, due to its elevation.
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Figure 1 Regional map showing the location of the Patea green waste site
Figure 2 Aerial view of the Patea Beach green waste disposal area
Patea River
Application attachment appendix I Recreation Assessment Manawa Energy 14 Feb 2023 REVISED
monitoring inspection and to take
water samples. The weather was fine with 13 mm rain falling over previous 72 hours
and the stream system was in low flow. A truck was discharging drilling muds and a
digger was operating blending in sawdust at time of inspection. A discussion was
held with the digger driver and site manager on the drainage issues at the top of the
lower irrigation area and the installation of novaflo in a few swampy areas on the
main irrigation flats. Discussion included the
freshwater and coastal swimming spots last summer found higher-than-usual levels of bacteria, reflecting the season’s higher rainfall, the Policy and Planning Committee was told. More rain meant dairy effluent ponds discharged for longer and more frequently than usual, and clouds prevented the sun from breaking down bacteria. Even so, waterfowl continued to be the main culprits at the worst freshwater sites, the Waiwhakaiho River near Lake Rotomanu and the mouths of Te Henui Stream and Waimoku Stream.