Figure 5 Conductivity levels found in surface water at the Central landfill site, 2004-2016
The level of suspended solids also fluctuate over time with a range of <2 to 250 g/m3
recorded over all the sites. The unnamed tributaries on this site are generally small,
clear running, low energy brooks with silty beds, however with increased rainfall the
suspended solids level can rise quite quickly as silt is stirred up from the beds and
edges of the streams, which becomes entrained in the
Hawera in South Taranaki (39°36'S 174°18'E). The research farm, which is located
close to the sea, had an average air temperature of 12.9oC and annual rainfall was
1124mm in the year prior to August 2007. The soil is classified as an Andosol
(Egmont black loam).
The following five treatments were imposed at this site during spring 2002, each in
four replicate 0.1 ha grazing plots, and continued for five years:
1. Fallow - ungrazed and uncut with no fertiliser applied
2. Cut and carry
Lake Rotorangi state of the environment monitoring report - Taranaki Regional Council.
Lake Rotorangi state of the environment monitoring report - Taranaki Regional Council.
Lake Rotorangi state of the environment monitoring report - Taranaki Regional Council.
Prior to the Wellington
property consents (7670-1, 7884-1) being exercised there were areas of pine which
have been subsequently removed and processed.
Average annual rainfall for the site is 1383mm (taken from nearby Motunui
monitoring station). There are no significant surface water bodies located in the
immediate vicinity of the areas that are landfarmed, other than small farm drains.
Previous land use at the Wellington section of the landfarm has been a mixture of
agriculture and
Origin Energy Rimu Production Station consent monitoring report - Taranaki Regional Council.
Regional cleanfills consent monitoring report 2018-2019
the Mangamawhete Stream flows adjacent to the Derby Road North stockpiling
facility. The proximity of the site to this surface water body had been taken into account in the setting of
buffer distances and location of the stockpiling facilities.
The predominant soil type has been identified as gravelly sand and the vegetation cover is pasture, recently
converted from native bush. Average annual rainfall for the site is 1,942 mm (taken from the nearby
‘Stratford’ monitoring station).
No
land use and development (e.g. farming,
earthworks, urban centres, industrial sites) entering waterways, particularly during or
following heavy rainfall events. Accidental discharges of largely untreated wastewater can
have temporary adverse effects on coastal water quality. Wastewater discharges from
large population bases can occasionally render shellfish in the area unsuitable for
consumption.
Water quality can also be impacted on a short-term or on an ongoing basis by