and removing it off site as baleage removes significant amounts of nitrogen from the
system;
• A review of six analytes sampled in monitoring bores showed that the ground water leaving the Uruti
catchment is generally in better condition than groundwater entering the composting site;
• Nitrogen leached from the root zone on a whole farm basis varies only slightly between scenarios due to
the large farm area and the significant area that is fallow/in bush and scrub.
• From the
Galvanizers Limited demonstrated an overall high level of
environmental performance.
The Council’s monitoring programme for the year under review included two inspections and seven water
samples collected for physicochemical analysis.
Elevated zinc concentrations were recorded in the receiving waters upstream and downstream of the
Company’s discharge. The historical disposal of galvanising waste materials into a bore on the Company’s
site is considered to be the most likely source of zinc
to these recognised ecosystems has been taken into
account in the setting of buffer distances and location of the stockpiling facilities.
The predominant soil type has been identified as black loamy sand and vegetation
growth is primarily a mixture of pasture and dune grasses. Test pitting and the logging
of boreholes on site indicated a relatively shallow water table. Test bores were augured
to 10 m in the pit area, revealing extensive compacted, low permeable clays underlying
coastal
indicated in similarity to the previous monitoring period, the 2014-15 year, the
groundwater in the immediate vicinity of the former storage cell is still impacted by elevated
salinity concentrations and trace benzene. The saline plume may be migrating slowly
northwards, as a down gradient bore had detailed an elevation in saline parameters as well as
trace benzene. At the same time, the up gradient bore had indicated a slight decrease in
salinity concentration. As in previous monitoring years,
emissions into
the air from the Rimu Production Station 20
Table 7 Summary of performance for Consent 5749-1 to take water from the
Manawapou River for hydrostatic testing of pipelines and crude oil tanks 21
Table 8 Summary of performance for Consent 5891-1 to take water from the
Tangahoe River for the purposes of hydrostatic testing of crude oil tanks
and filling of an onsite fire water pond 21
Table 9 Summary of performance for Consent 5946-1 to take and use groundwater
from a bore
three monitoring bores complied with
consent limits.
There were a total of 44 Unauthorised Incidents (UI’s) recorded in the Waiwhakaiho
catchment during the period under review, 36 of which were substantiated at the time of
investigation. 12 of the incidents were in the area covered by this monitoring programme,
with consented industries monitored under the Lower Waiwhakaiho Catchment Monitoring
Programme accounting for 9 of these unauthorised discharges.
During the year under review,
with exception of one ammoniacal nitrogen result, all of the samples collected
from the three monitoring bores complied with consent limits.
There were six unauthorised incidents recorded that were associated with the consents
covered by this report, one of which resulted in an abatement notice being issued. There
were a further four incidents associated with actual or potential discharges to water within
the lower Waiwhakaiho industrial area, of which one was found to be breaching regional
Ordinary Council Agenda Sept web v2
out.
Upgrades are likely to take place to direct clean water from the road away to the sand trap. The monitoring
bores had yet to be installed. It was communicated to ensure that this is completed prior to
31 August 2021, as required by abatement notice EAC-23255 and EAC-23272.
09 April 2021
A routine compliance monitoring inspection was undertaken for the air discharge and land discharge
consents held by the Company. The irrigator was operational at the time of inspection and
Stream, which may
in turn affect the streambed fauna.
page
Monitoring of groundwater and leachate in relation to the old landfill area off Bewley Road
showed that with exception of one ammoniacal nitrogen result, all of the samples collected
from the three monitoring bores complied with consent limits.
There were three unauthorised incidents recorded that were associated with the consents
covered by this report, one of which resulted in an infringement notice