sediment and/or sludge will be managed within the pond treatment systems,
ii. how the level of build-up will be monitored including factors that will trigger active management, and the
frequency of undertaking the identified measures or procedures;
iii. how available storage in the Pond Treatment System will be managed to ensure there is capacity during rainfall
events.
22 The Wetland Treatment System must be managed to ensure that the discharge from the system will achieve compliance
both camps during the period
under review. NPDC remain under abatement notice at both camps to comply with their consent conditions.
Exceedances of discharge limits occur intermittently as a result of high rainfall and groundwater infiltration
into the wastewater networks. Exceedances during peak holiday periods are also influenced by higher camp
occupancy and the increased wastewater volumes generated. Both consents are currently in the process of
being renewed. Solutions to the current
surface). Average annual rainfall for the site is 1,043 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 operational features are
presented in Figure 1.
Figure 1 WRS Waikaikai Landfarm and regional insert
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5
A summary of the site data is provided below:
alternating layers of sand and clays. Bore
construction also revealed localised peat layers within some augured cores (approximately 4–8 m below
surface). Average annual rainfall for the site is 1,043 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.
Figure
dune sands. Pit construction revealed mostly tightly packed sand at the pit
bases (approximately 4-5 m below surface). Average annual rainfall for the site is 1023
mm (taken from the nearby ‘Duffy’ monitoring station). As with the other South
Taranaki coastal sites, the Remediation site is subject to strong winds.
Site data
Location
Word descriptor: Manawapou Road, Manutahi, Taranaki
Map reference: E 1717244
(NZTM) N 5608736
Mean annual rainfall:
significant rainfall for some
time. The skimmer pits were discharging with no effects noted downstream of the main
discharge point. No flaring or odours were noted at the time of inspection. Everything
was satisfactory.
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11
14 May 2013
The site was neat and tidy. Ring drains and bunds were clear. The skimmer pits were
clear of debris following high winds in the weekend. The discharge was not causing
any visual impact in the receiving waters. No flaring was occurring.
environmental effects if it was buried with the green waste rather than being removed.
During the year under review no unacceptable material was dumped at the Patea Beach green waste
discharge site. There has been no leachate observed discharging from 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.
treatment chemicals)
Conductivity Conductivity, an indication of the level of dissolved salts in a sample, usually
measured at 20°C and expressed in mS/m
Cr Chromium
Cu* Copper
Fresh Elevated flow in a stream, such as after heavy rainfall
g/m3 Grams per cubic metre, and equivalent to milligrams per litre (mg/L). In water, this is
also equivalent to parts per million (ppm), but the same does not apply to gaseous
mixtures
Incident Register A register containing a list of events
Usually expressed as colony forming
units per 100 millilitre of sample
F fluoride
FC faecal coliforms, an indicator of the possible presence of faecal material
and pathological micro-organisms. Usually expressed as colony forming
units per 100 millilitre sample
fresh elevated flow in a stream, such as after heavy rainfall
g/m3 grams per cubic metre, and equivalent to milligrams per litre (mg/L). In
water, this is also equivalent to parts per million (ppm), but the same
does not
observed discharging from the sand dune area or the stockpiled
green waste during the period under review. The sandy substrate combined with low
rainfall at the beach would be restricting the production of leachate from the green
waste.
3.3 Evaluation of performance
A tabular summary of STDC’s compliance record at this site for the year under review
is set out in Table 1.
Table 1 Summary of performance for consent 6088-3
Purpose: To discharge green waste onto land for stabilisation