groundwater beneath the Uruti Composting
Facility Site are moderately impacted with Chloride contamination
Site layout, hydrogeological interactions, soil types and rainfall also influence the level of
Chlorides observed in the soil, groundwater resources and the Haehanga Stream
environment
Offsite impacts have not been quantified and where not part of the scope of this report
The Uruti Composting Facility Management Plan was developed to improve the performance of the
composting
silty-clay
. Due to high rates of irrigation loading, shallow groundwater beneath the Uruti Composting
Facility Site are moderately impacted with Chloride contamination
. Site layout, hydrogeological interactions, soil types and rainfall also influence the level of
Chlorides observed in the soil, groundwater resources and the Haehanga Stream
environment
. Offsite impacts have not been quantified and where not part of the scope of this report
The Uruti Composting Facility Management Plan was
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
List of figures
Figure 1 Mangapouri Cemetery location map 4
Figure 2 Burial Plan for first five years of operation 9
Figure 3 Baseline groundwater elevations in comparison to rainfall 17
Figure 4 Baseline groundwater levels GND2624 18
Figure 5 Baseline groundwater levels GND2627 19
Figure 6 Baseline groundwater levels GND2625 19
Figure 7 Baseline groundwater levels GND2623 20
Figure 8 Baseline groundwater levels GND2484 20
Figure 9 Baseline groundwater
cover is linked to a shift of storm tracks southward and dry tropical zones
expanding.
Rainfall: The report covers average rainfall by season, and trends in rainfall within each
season. It also presents information on trends in intense rainfall episodes. The report goes on
to note that climate change modelling suggest there will be an overall pattern of increasing
rainfall in winter and spring down western New Zealand and across the south of the South
Island, with drier conditions to the
the 2018-2019 monitoring year, with most
commencing irrigation in November or December and concluding for most in March. Rainfall recorded at
the Council’s monitoring locations over the summer irrigation period ranged between 58% and 111% of
historical mean values. A particularly dry October, along with warm coastal winds, caused soils to dry out
faster than normal which resulted in high irrigation water demand. Total usage during the 2018-2019
irrigation season, with a total water use across
the rainfall recorded at the Council’s monitoring locations ranged
between 100 % and 158% of historical mean values. This meant that many rivers and streams were running
above mean annual low flow conditions for the period. The higher than normal stream flows meant that
there was only a small amount of monitoring required to ensure ecological flows were maintained in those
waterways being used to supply water for irrigation. During the period under review, compliance with
residual flow
relation to best practice irrigation onto high and low risk soils.
1.6 Application Depth
The volume of water applied during irrigation is referred to as the application depth. Farmers will make
reference to the amount of rain in their rain gauge in mm. For example, there was 4 mm of rainfall
yesterday. This relates to the formula 1mm of rain falling on 1 ha equals 10,000 litres. Using the example of
4mm of rainfall, this would equate to 40,000 litres of rain falling on each ha of land.
application rates for Farm 1 56
Figure 47 Paddock annual nitrogen application rates for Farm 2 56
Figure 48 Paddock annual nitrogen application rates for Farm 3, fixed irrigator network 57
Figure 49 Paddock annual nitrogen application rates for Farm 3, travelling irrigators 57
Figure 50 Monthly mass of nitrogen irrigated 59
Figure 51 Monthly rainfall totals and median soil moistures 59
Figure 52 Estimated monthly mass of phosphorus irrigated 59
Figure 53 Total nitrogen
points (when allowed) the
Company is required to put out signs at predefined locations discussing limited access. At no point during
this monitoring period were lake levels below the usable range, therefore, any inability to use the ramp was
a result of maintenance issues. Boat ramp usability is discussed later in this report. During large rainfall
events the 78 m upper limit was briefly exceeded during this monitoring period. The Company is to
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endeavor to ensure