Lake Rotorangi is determined each year, through four water quality monitoring
surveys and through phytoplankton surveys (conducted simultaneously with the water
quality surveys). A previous benthic invertebrate survey and a three-yearly macrophyte
(aquatic weeds) survey conducted in autumn 2015 are also reported, for completeness.
Based on these surveys and studies, the lake’s condition continues to be classified as
mesotrophic, with a very slow and insignificant rate of increase in trophic
consent to discharge emissions into the air at the plant
site. The consent to emit to air was replaced in May 2016.
During the monitoring period, ANZCO demonstrated a generally good level of
environmental performance.
Monitoring is carried out by both ANZCO and the Council. ANZCO monitors water
abstraction rate, effluent flow rate and composition, receiving water quality, odour at the plant
boundaries, and effluent loadings, soil, and herbage for irrigation areas. The Council
undertakes
in all
large flood events.
Funding
Maintenance funded by: Targeted rate over the South
Taranaki District Council
Damage repairs funded by: Rates (as above)
Financial reserves
Reprioritising works
Loan
Financial
reserves
Aim to: - Build up reserves to meet above average planned
expenditure.
- Draw down reserves to meet unexpected
expenditure.
Review of plan Review when there is a change in maintenance standards, a change in
funding policy,
administrational performance has been rated as Good, as although the
performance against most consent conditions with respect to the administrative compliance was high,
issues around testing of the integrity of the water take pipeline and meeting the requirements of the
Resource Management (Measurement and Reporting of Water Takes) Regulations 2010 are yet to be resolved.
Methanex have been open and participative in their communication with regard to their progress on these
issues.
For reference, in
achieving sustainable development of the
region’s resources.
1.1.4 Evaluation of environmental and administrative performance
Besides discussing the various details of the performance and extent of compliance by the Company, this
report also assigns them a rating for their environmental and administrative performance during the period
under review.
Environmental performance is concerned with actual or likely effects on the receiving environment from the
activities during the monitoring
performance
Besides discussing the various details of the performance and extent of compliance by the Company, this
report also assigns them a rating for their environmental and administrative performance during the period
under review.
Environmental performance is concerned with actual or likely effects on the receiving environment from the
activities during the monitoring year. Administrative performance is concerned with the Company’s
approach to demonstrating consent compliance in site
review can be summarised by the following main points:
Surface soils across the site are dominated by semi-porous silty clay-loams, overlying more
impervious clay soils
Soils below 2000 mm have not been characterised
Chloride concentrations in the soil beneath the irrigation zone are highly elevated compared
to non-irrigated areas
The shallow groundwater table is in direct connection with semi-porous loamy silty-clay
Due to high rates of irrigation loading, shallow
to the Council on a monthly basis. The
raw water abstraction rate from the Waitara River for the Motunui plant was
measured continuously and the plant effluent was monitored for a number of
parameters with frequencies ranging from continuously (flow and pH) to monthly
(trace metals). Abstraction of raw water from the Waitara River and effluent
discharges at the Waitara Valley plant occurred sporadically during the monitoring
period, and records were provided when this occurred. Monthly
pruning is not practised to produce framing timber
because Douglas-fir has many small branches and
pruning costs are twice as much per tree as radiata
Douglas-fir
(Pseudotsuga menziesii)
8
Fifty-five year old stand of Douglas-fir
page
pine. If trees are pruned to produce clear-wood, a
crown height of 5-6 metres should be left.
Current silviculture regimes aim to produce high
strength timber over a 45 year rotation using initial
stocking rates of 1500-1600stems per hectare (sph).
resources.
1.1.4 Evaluation of environmental and administrative performance
Besides discussing the various details of the performance and extent of compliance by the Company, this
report also assigns them a rating for their environmental and administrative performance during the period
under review.
Environmental performance is concerned with actual or likely effects on the receiving environment from the
activities during the monitoring year. Administrative performance is concerned with the