7-day period across all the
recorded years. MALF is generally the minimum flow needed to maintain a catchment’s natural character and
ecosystem health however, as this measurement is an ‘average’, flows do naturally fall below MALF during
prolonged periods of dry weather or drought.
Estimations of MALF are made using long term flow records but, if no records are available, it can also be
estimated using records from hydrologically similar streams. When developing estimates of MALF, flow
resource consent or a rule in a regional plan, or it falls within some particular
categories set out in Section 14.
TBP holds two water permits that provide for abstraction of water, one from the Inaha Stream and one from
groundwater.
Surface water extraction
TBP holds water permit 2051-4 to cover the abstraction of up to 50 L/s of water from the Inaha Stream for a
rendering operation. This permit was issued by the Council on 31 May 1999 under Section 87(d) of the RMA.
It is due to
Freshwater physicochemical environmental monitoring report 2016-2017
Regional Quarry Combined Biennial Report Southern Quarries 2022-2024
Application AEE x14 Consents Manawa Energy 14 February 2023
a regional plan, or it falls within some particular
categories set out in Section 14.
The Company holds water permit 1795-4 to cover the taking of water from the Waiaua River in association
with the Opunake hydroelectric power scheme. This permit was issued by the Council on 13 October 2006
under Section 87(d) of the RMA. It is due to expire on 1 June 2018.
Special condition 1 defines the maximum rate of abstraction (3,900 L/s).
Special condition 2 requires the Company to
process sewers which flow to the
storm pond. The stormwater falling on the non-process areas of the western half of the site (Figure 1) is
directed by “v” ditches running alongside the roads to a dam known as the Duck Pond and then out to the
Tasman Sea via the Manu Stream. Stormwater falling on the eastern side of the site is directed to unnamed
tributaries of the Waihi Stream via outfalls and a small sedimentation pond.
Sludge from the storm pond, off-spec pond and blow down pond stored in
yield and order for each REC class, which is influenced by the amount of data (viz. contributing sites)
within each class. The REML model does not produce a coefficient of determination that can be used
to check of the goodness of fit of the model. However, goodness of fit was assessed using the
frequency with which observed yields fall within the mean yield estimated by the model and 95%
confidence interval for a class.
Loads from streams recommended to be excluded from
Category Measured values
Excellent <10% of the guideline, (0-2.2µg/m³)
2 (50%)
4 (100%) if using adjusted
values
Good 10-33% of the guideline, (2.2-7.3µg/m³)
2 (50 %)
0 if using adjusted values
Acceptable 33-66% of the guideline, (7.3-14.5 µg/m³) 0 (0%)
Alert 66-100% of the guideline, (14.5-22 µg/m³) 0 (0%)
Total number of samples 4 (100%)
The levels of Toluene and Xylene obtained in the current work are far below ambient
guideline values, and all results fall
results fell into the MfE
‘Excellent’ air quality category. Three of the four
benzene results were within the MfE ‘Acceptable’
category. One result fell within the ‘Good’ category.
The Council also monitors for VOCs around
significant potential sources, such as gas production
stations, as part consent compliance programmes.
Results always fall well within guideline values.
Find out more
Air emissions consents monitoring reports
tinyurl.com/TRC5g
Air monitoring survey