the sand dune area or the stockpiled
green waste during the period under review, or in previous years. These factors, combined with the sandy
substrate and low rainfall at the beach would be restricting the production of leachate from the green
waste. It is therefore considered that, so long as STDC continues to monitor for and remove exposed
unacceptable material from the coastline the environmental effects from the activities at the site, are likely
to be no more than minor.
3.3
Executive, Audit & Risk Committee agenda October 2020
stored on site prior to
being piped to the Omata tank farm in New Plymouth. The gas is processed, compressed and piped to end
users. The produced water is disposed of by deep well injection.
Stormwater from the production station is collected and discharged at three separate points. The water level
in the firewater pond in the north western corner of the site is maintained by an abstraction from the
Ngaere Stream. Overflow due to rainfall entering this pond is discharged to land and to the …
assigned to each attribute band.
For lakes, modelled predictions are made at the scale of the overall lake.
Uncertainty is a component of any freshwater monitoring or modelling. For example, river flows and levels
fluctuate throughout the day, and nutrient levels will vary depending on how much rainfall and runoff is
occurring. Pathogens and algae will grow in response to a range of factors, such as temperature, light and
river flow. This uncertainty is described in terms of ‘confidence’.
segments
that are assigned to each attribute band.
For lakes, modelled predictions are made at the scale of the overall lake.
Uncertainty is a component of any freshwater monitoring or modelling. For example, river flows and levels
fluctuate throughout the day, and nutrient levels will vary depending on how much rainfall and runoff is
occurring. Pathogens and algae will grow in response to a range of factors, such as temperature, light and
river flows. This uncertainty is
fluctuate throughout the day, and nutrient levels will vary depending on how much rainfall and runoff is
occurring. Pathogens and algae will grow in response to a range of factors, such as temperature, light and
river flow. This uncertainty is described in terms of ‘confidence’. For example, how certain it is that the
actual water quality is reflected in the measurement which has been reported. Where possible, additional
assessments have been undertaken to determine a level of confidence
2016-2017 monitoring period. This event
occurred on the 15 February 2017 and was the result of extremely high rainfall and an operational error.
Signage was placed at the affected sites in accordance with the contingency plan. The consent holder
subsequently undertook an internal audit of procedural matters and put in place remedial measures to
prevent a similar recurrence. In particular, monitoring and alarm system operation and response matters
have been re-addressed (STDC, pers comm).
The
augured cores
(approximately 4–8 m below surface). Average annual rainfall for the site is 1043 mm
(taken from the nearby Patea monitoring station).
Origin Energy Ltd’s Kauri D wellsite is situated in the eastern corner of the site, and
there is a small coastal lake inland and to the northeast (up gradient) of the storage pit
area. Both of these features are presented in Figure 1.
A summary of site data is presented below:
Site data
Location
Word descriptor: Lower Manutahi
attribute band.
For lakes, modelled predictions are made at the scale of the overall lake.
Uncertainty is a component of any freshwater monitoring or modelling. For example, river flows and levels
fluctuate throughout the day, and nutrient levels will vary depending on how much rainfall and runoff is
occurring. Pathogens and algae will grow in response to a range of factors, such as temperature, light and
river flows. This uncertainty is described in terms of ‘confidence’. For
as a result of high rainfall events that exceed the storage capacity of the primary and
holding ponds, and the pumping capacity of the reticulated system to Hawera.
Primary pond effluent analyses were not required during the monitoring period, although the condition of
the pond and any associated odour continues to be monitored during routine inspections.
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10
Along with a visual survey of the primary pond and surrounds, dissolved oxygen levels (DO) and the