inspection of the well sites associated with the MMPS was carried out to check for compliance
with resource consent conditions. Heavy and persistent rain had fallen the previous night. Well sites
inspected were Mangahewa-A, C, D, and E; Pouri-A; Pukemai-A; Tuhua-A, B, C and D; McKee B, C, D and E;
Toetoe-A, B and C; and Mystone-A. In general, the sites were tidy and clean with minimal activity occurring.
The sites were being maintained with weed spraying evident on the site and in some places within
landfill at Victoria Rd
Figure 2 Stratford landfill (shaded in yellow) and sampling locations
2.1 Inspections
27 August 2012
A site visit was made to conduct a compliance monitoring inspection and to take
groundwater samples. The weather was fine with 12 mm rain over the previous 24
hours.
Large areas of the crown of cap had been sown with grass. The re-grassed area had
been fenced off from stock. There were some areas of ponding around the stock
troughs and on the
in the skimmer pit under hot, sunny and
dry conditions, rather than any chemical source. The water level in the pit was very
low at the time of inspection. It was considered by Council officers that should
enough rain fall to cause a discharge, the pH would fall to well within consent limits
prior to any discharge occurring. No remedial action was required by the Council.
Also on 14 November 2012, a sample taken from the skimmer pit showed an elevated
suspended solids concentration. It
Council (Red lines show council boundaries).
page
GNS Science Consultancy Report 2015/172 3
Table 1 Average recurrence intervals (ARI) and 48-hr rainfalls for selected rainfall monitoring sites in the
Taranaki Regional Council area.
Rainfall monitoring sites 48 hr rainfall (mm) ARI (yrs)
North Egmont at Visitor's Centre 456 7
Dawson Falls 531.5 15
Kahui Hut 366 8
Mangorei at Reservoir 175.5 7
Hillsborough 187.5
page
9
3.2 Results
3.2.1 Inspections
08 December 2020
An inspection was undertaken to assess compliance with the wastewater discharge consent. A prolonged
period of rain occurred prior to the inspection. The yard was relatively clean and tidy. No evidence of spills.
The discharge of stormwater onsite into the roadside drain looked much improved from the last inspection.
A sample of the settling pond discharge into the wetland was unable to be collected due to a new
$450.00 per day
Calibration test equipment hire $100.00 per hour
Disposabale bailer $20.00 per sample
Peristaltic pump $100.00 per day
Rain gauge calibration $300.00 per deployment
Automatic water quality samplers $50.00 per day
Repair parts (battery/fuse/cable) $50.00 per deployment
Betrand Rd telemetry $2,000.00 per year
GPRS telemetry $30.00 per month
Lake Rotorangi telemetry $1,752.00 per year
Mangati Stream telemetry $2,900.00 per year
Mangawhero
MANAIA
HAWERA
EGMONT
NATIONAL
PARK
Total winter rainfall (mm)
KEY
% of average winter rainfall
xxx yy%
INGLEWOOD
Pohokura
Saddle
Dawson Falls
Cape Egmont
Stratford
Whareroa
Patea
North Egmont
Inglewood
Motunui
Mangorei
Kaka Rd
Kotare
Rimunui
Glenn Rd
Huinga
157%
149%
147%
107%
137%149%
167%
167%
153%
134%
143%
523
N/A
899
977
798
2245
2723
452
487
404
582
567
728
128%
December 2022
The camp was quiet at the time of inspection with only one caravan on site. There were no odours or visual
issues near the WWTP or trenches. The sea was rough (BF3) with strong onshore winds. The WWTP
appeared to be operating in compliance with its consent conditions at the time of inspection.
19 January 2023
The monitoring inspection was completed late this month due to heavy rain prior which may have masked
any effects from the WWTP. The camp was reasonably busy at the
by NPDC that relate to the Colson Road landfill 14
Table 2 Monitoring programme objectives and programme development methodology 15
Table 3 Summary of monitoring activity for 2022-2023 16
page
iii
Table 4 Chemical analysis of Colson Road landfill combined site leachate discharge 33
Table 5 Results of analysis of under liner drainage for the year under review. 35
Table 6 Results of rain event monitoring – discharge and Puremu Stream samples, 1 June 2023 40
Standard) in 2020-
2021 (Figure 1). In the period 2022-2023, log exports accounted for over 1,000,000 JAS, showing a slight
decrease compared to the previous year.
page
4
Figure 1 Port Taranaki log exports 2015 - 2022
The move to bulk cargo resulted in an increase in material deposited on the ground in the log and coal
storage areas. When it rains this material washes into the stormwater system, and discharges into the
harbour via the numerous piped outlets (Figure 2).