Figure 1 Configuration of the HWWTP (adapted from NIWA 2012) 5
Figure 2 Compliance of DO concentration (g/m3) with consent conditions in the
primary and secondary oxidation ponds 2015-2016 13
Figure 3 Faecal coliform numbers in the HWWTP effluent, 1992 to 2016 16
Figure 4 Daily discharge volumes (m3/day) from the HWWTP and daily rainfall
data (mm) from a Council rainfall station approximately 5 km east of the
site, 1 July 2015 to 30 June 2016. Inset: Rainfall and outflow data from
Summary of performance for consent 7520-1 24
Table 12 Evaluation of environmental performance over time 25
List of figures
Figure 1 Configuration of the HWWTP (adapted from NIWA, 2012) 4
Figure 2 Daily hours where DO is greater than 0 g/m3 in Pond 1 and 2 8
Figure 3 Daily discharge volumes (m3/day) from the HWWTP and daily rainfall data (mm) from a
Council rainfall station located approximately 5 km east of the site (2018-2019) 13
Figure 4 Location of intertidal survey
How do I identify Critical Source Areas?
Look for areas where water accumulates during rainfall events and which also
connect to water bodies. These are Critical Source Areas. These areas can be
on steep or shallow slopes. If you are unsure, talk to your council or farm
advisor. See the next page for some examples of Critical Source Areas.
Am I allowed to graze stock in Critical Source Areas?
From 1 May to 30 September, stock cannot be grazed in Critical Source Areas
within a winter
the frequency of sample collection earlier in the period. Sampling commenced in
early November 2010 with three of the sampling surveys performed prior to January
2011. The majority of the surveys were performed over the latter half of the summer
period. Bathing water samples were normally taken between the hours of 0900 and
1800 hours (NZDST) with none collected within a three day period following
significant river fresh conditions. [NB: regional differences in rainfall patterns have
caused
irrigation was high. Most irrigation had
commenced by the middle of December.
Over the five month summer irrigation period, Mount Taranaki recorded between 69% and
88% of normal rainfall which meant that rivers were running well below mean flows for the
entire period. The low stream flows necessitated close and frequent monitoring by the Council
to ensure ecological flows were maintained in those waterways being used to supply water for
irrigation. During the period under review compliance with
measured and achieved. In first iteration plans, it will
also be particularly difficult to meet many of these ‘musts’, rather it will be a case of making
incremental progress over time.
• The E.coli component of the NOF is problematic. The E.coli grade is based on the lowest scoring
area across four different criteria. One of these – the 95th percentile – is highly influenced by
heavy rainfall. In a region like Taranaki, where such rainfall is common, achieving the
improvements
significant rainfall
events.
13. The Company continues to be proactive in their response to objectionable odour identification, with
areas of the main storage shed closed to prevent odour release. Mesh doors that were installed during
the 2020/21 period continue to prevent mass air movement from within the shed. The Company also
maintains shelter belts/vegetative environmental buffers (VEBs), as a passive odour mitigation
technique. These buffers continue to establish and mature.
Council meeting agenda November 2019
Remediation Hearing Ngāti Mutunga Legal Submission & Haehanga Report
for irrigation was high. Most irrigation had
commenced by the middle of December 2014.
Over the five month summer irrigation period, rainfall was between 62% and 106% of normal
which meant that rivers were running well below mean flows for the entire period. The low
stream flows necessitated close and frequent monitoring by the Council to ensure ecological
flows were maintained in those waterways being used to supply water for irrigation. During
the period under review compliance with