aluminium
shear and discussions were had with staff regarding minimising tracking to a nearby stormwater sump.
7 Jun 2019
The inspection was carried out after sustained heavy rainfall earlier in the day. The site was operational with
casting and powder-coating underway. Small amounts of swarf were noted in the scrap loading yard and
some of this had collected on the filter screens installed in the stormwater sumps. Minor ponding was
observed in low-lying areas of the yard as a result of the
STDC Kaponga, Manaia, Pātea, and Waverley wastewater treatment plants consent monitoring report 2018-2019
soil.
1.2.3 Site description
The Wellington Landfarm is located on Brown Road, Waitara, on marginal coastal farm land situated on
reworked dune fields. The predominant soil type has been identified as black loamy sand. Vegetation
growth is primarily a mixture of pasture and dune grasses. Prior to the Wellington property consent (7884-1)
being exercised, there were areas of pine (Figure 2) which were subsequently removed and processed.
Average annual rainfall for the site is 1,383 mm
compliance monitoring purposes.
Hector Place pumping station and the emergency overflow structure were also inspected and found to be in
a satisfactory condition.
12 February 2018
An inspection of the WWTP was conducted in fine weather with moderate north westerly wind conditions.
The monthly rainfall was measured as 68 mm, recorded at the Kapoaiaia weather station.
The influent step screen was operating and wastes were fully contained. The primary pond was a turbid,
dark green brown
was being undertaken at the time of the inspection.
18 May 2017
The site was inspected following reasonably heavy rainfall over the previous few days. Ring drains, bunds
and skimmer pits had all coped well with the rainfall. No contaminants or silt (suspended solids) were
observed in the skimmer pits, water very clean and the discharge area onto land did not give rise to any
concerns about water quality from the site. The separator in the truck load out area was clean.
No flaring,
deposited sediment was not likely recorded.
In the instance of the non-compliant discharge sample, this event followed a period of
heavy rainfall with moderate flow in the Kurapete Stream. Relative to the period
surrounding the biomonitoring survey, the stream was likely less vulnerable to impacts
from the quarry at the time of this discharge. This is reflected in the results from the
receiving water samples, which were compliant. Furthermore, observations of the
Kurapete Stream noted that the
(approximately 3-4 m below surface).
Average annual rainfall for the site is 1,043 mm (taken from the nearby Patea
monitoring station). As with the other South Taranaki coastal sites, the Vanner site is
subject to strong winds predominantly from the N-NW at average speeds of 10-20
knots (taken from Hawera automated weather station).
The Mangaroa Stream runs through the northern extent of the site separating the
stockpiling facilities and some of the available spreading area from the main
rainfall
preceding sampling.
Figure 3 Ammoniacal nitrogen concentration of the Inglewood landfill stormwater/leachate (RTP002005)
for monitoring to date
2.2.3 Results of receiving environment monitoring
Chemical analysis
Receiving water sampling was undertaken at sites AWY00103, AWY100105, AWY000100, AWY000107 and
AWY000115 on two occasions (23 November 2020 and 2 February 2021). The locations of these monitoring
sites are shown in Figure 2 and the results of the chemical
a relatively
shallow water table. Test bores were augured to 10 m in the pit area, revealing extensive compacted, low
permeable clays underlying coastal dune sands. Pit construction revealed mostly tightly packed sand at the
pit bases (approximately 4-5 m below surface). Average annual rainfall for the site is 1,023 mm (taken from
the nearby ‘Duffy’ monitoring station). As with the other South Taranaki coastal sites, this site is subject to
strong winds.
Photo 3 Landfarming area M2110