sites (Waingongoro River
at Ohawe, Kaupokonui River at the mouth, and Waiwhakaiho River at the last riffle and at
Merrilands Domain) on a total of 17 individual site surveys, and detaching or detached mats
accumulating on the river’s edge triggered the ‘Alert’ level at the same four sites on a total of
15 surveys. Levels of cyanobacteria were lower than in the previous four seasons; the
improvement was probably caused by above-average rainfall causing a large number of
freshes that scoured
consent requirement. The reduction of
stormwater infiltration entering the reticulation, remains an issue to be minimised, with
some overflow issues occurring during the monitoring period, due mainly to excessive
inflows at the inlet of the plant following a very intensive rainfall event in mid-June 2015.
Remedial work undertaken to improve the hydraulic capacity of the new outlet and outfall
design together with additional sealing of the second pond’s cells’ walls has been successful
in
landowners while the Government sorts out the wide ranging and many
detailed technical and operational problems with the NZ ETS and consulting directly with
industry and forestry interests.
The Climate Change Projections for New Zealand report analyses expected changes in New
Zealand’s climate such as temperature, rainfall and other climate variables, out to 2120, and
draws heavily on climate model simulations from the Intergovernmental Panel on Climate
Change (IPCC) Fifth Assessment report. For
in rainfall patterns have
caused difficulties at various sites in the past as localised rainfall may impact on
bacteriological quality on isolated occasions]. Where necessary, a 2 metre sampling
pole was used for bacteriological sample collection immediately beneath the water
surface and at a minimum of calf depth at the sites. Thirteen samples were collected
from each site during the season.
Samples were analysed for enterococci, E. coli and faecal coliform bacteria, turbidity
and
is owned by
the Company, and consists of steep eroded hillsides, multiple side gullies, and small river flats distributed
along its length. The area receives more rainfall than the northern Taranaki coastline to the south-west. Soils
are generally poor and highly erodible. Patches of bush and planted trees cover most of the hillsides, with
grasses over the remainder and the flats.
1.3 Process description
The Company’s operations include composting, quarrying and vermiculture operations
of DO concentration (g/m3) with consent conditions in the primary and
secondary oxidation ponds in 2016-2017, between the hours of 11:00 and 14:00.
Data was collected from the pond outlet 11
Figure 3 Faecal coliform counts in the final effluent from the maturation cells (1992-2017) 14
Figure 4 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 (2016-2017) 16
Figure 5 Map of
the bulk earthworks
proposed;
e) Maintenance, monitoring and reporting procedures;
f) Rainfall response and contingency measures including procedures to minimise adverse effects in
the event of extreme rainfall events and/or the failure of any key erosion and sediment control
structures;
g) Procedures and timing for review and/or amendment to the erosion and sediment control
measures listed in the ESCP; and,
h) Identification and contact details of personnel responsible for
currently monitored by TRC on a regular long-term basis. In addition, the Northern
Hill Country FMU is under-represented in the monitoring network with only one monitoring site.
At a catchment level, the monitoring sites generally over-represent catchments with:
mean annual temperature <12°C;
mean annual effective precipitation >1500mm;
50% of the cumulative rainfall volume fell between 400m and 1000m;
volcanic acidic dominant geology, and pastoral land cover.
location map 4
Figure 2 Burial Plan for first five years of operation 9
Figure 3 Groundwater elevations 2019-2020 in comparison to rainfall 24
Figure 4 Groundwater levels GND2624-north 25
Figure 5 Groundwater levels GND2627-north 25
Figure 6 Groundwater levels GND2625-east 26
Figure 7 Groundwater levels GND2623-west 26
Figure 8 Groundwater levels GND2484-south 27
Figure 9 Groundwater levels GND3032-south 27
Figure 10 Type of internment planned for Area-A and …
The Waitara scheme is now very resilient. But there remains a small risk that damage could
occur during a very large flood, which might compromise the level of protection afforded to
the township. We keep a careful eye on the scheme’s performance during very heavy rainfall
and occupants can expect a timely warning if we do see greater risks emerging.
However, the risk factor today is extremely low compared with other risks to property, such
as damage from high winds.
Lower