monitoring 55
2.7.2.1 Deposition gauging 55
2.7.2.2 Ambient suspended particulate and landfill gas component
monitoring 56
2.8 Investigations, interventions, and incidents 57
2.9 Management and reporting 66
2.9.1 Landfill management and contingency plans 66
2.9.2 Colson Road Landfill Liaison Committee 67
2.9.3 Independent consultant’s reports 67
2.9.4 Composting 69
3 Discussion 70
3.1 Site performance 70
3.2 Environmental effects of exercise of consents 73
3.3
Drilling fluids
Oil and gas wells may be drilled with either synthetic based mud (SBM) or water based mud (WBM). As the
names suggest, these are fluids with either water (fresh or saline) or synthetic oil as a base material, to which
further compounds are added to modify the physical characteristics of the mud (for example mud weight or
viscosity). More than one type of fluid may be used to drill an individual well. In the past, oil based muds
(diesel/crude oil based) have also been used. Their
reports covering activities in the oil and gas exploration sector have been
presented. A number of individual programmes had been merged for efficiency in 2017/2018, so while monitoring activities
have increased overall, the number of programmes shows a reduction. There are additional programmes for hydrocarbon
exploration and development activities from time to time. With the continuing downturn in the oil and gas exploration and
production sector, it is likely that the number of
Herekawe Stream
Nov
2015
June
2026
June
2032
New Plymouth
District Council 5125-2 To discharge stormwater into the
Herekawe Stream
Nov
2015
June
2026
June
2032
New Zealand Oil
and Gas Services
Ltd
7152-1.2
To discharge treated stormwater and
hydrotest water from a hydrocarbon
storage facility into the Herekawe Stream
Sep
2007
- June
2026
OMV New Zealand
Ltd
1316-3.5
To discharge treated and un-treated
stormwater into the Herekawe
deep well injection (DWI) activities. Both companies are subsidiaries of New Zealand Energy
Corporation (the Company).
During the period under review, the Company held four resource consents for the subsurface injection of
fluids by DWI. The consents authorise discharges from four separate wellsites within the Company’s oil and
gas fields. These include the Waihapa-F wellsite, located near Bird Road, 6 km south-east of Stratford, the
Waihapa-D and Waitapu wellsites located on Cheal Road,
Supplier Terms and Conditions (674 KB pdf) Supplier Terms and Conditions (674 KB pdf)
fertilisers and
agrichemicals to land and runoff to water
runoff from other farm sources (e.g.
feeding paddocks, standoff pads, farm
tracks and raceways) to water
the avoidance and mitigation of the
adverse environmental effects of diffuse
source discharges to water through
riparian management.
Other issues such as the impact of discharges
to water that come from end-of-pipe sources
(point sources) are largely addressed in a
separate report by the Council on the future
management
programmes have now been
reported on in full, meeting the Annual Plan target. A number of individual programmes were merged for efficiency in 2017/2018, so
while monitoring activities have increased overall, the number of programmes shows a reduction. With the continuing downturn in
the oil and gas exploration and production sector, it is likely that the number of compliance programmes and reports for this sector
will remain at subdued levels. The dairy farm effluent system non-compliance
reports covering activities in the oil and gas exploration sector have been
presented. A number of individual programmes had been merged for efficiency in 2017/2018, so while monitoring activities
have increased overall, the number of programmes shows a reduction. There are additional programmes for hydrocarbon
exploration and development activities from time to time. With the continuing downturn in the oil and gas exploration and
production sector, it is likely that the number of
monitoring (1.1 MB pdf) See appendices Coastal erosion information: inventory & recommendations for monitoring (1.1 MB pdf) Appendix 1 (45 KB pdf) Appendix 2 (412 KB pdf) Appendix 3 (301 KB pdf) Marine oil spill response - Okato 2007 A report on the Council's response to what was then the largest ever crude oil spill in New Zealand and the third largest oil spill of any type in New Zealand in recent history. The oil affected nearly 14 kilometres of sand and rocks along the coast near Okato in October