a heavy rainfall event. The air quality in the Bell
Block Bypass area can be considered as ‘excellent’ or ‘good’ for 100 % of the time (Table 2).
Table 2 Categorisation of results - entire dataset
National Environmental Standard for PM10 =
50 µg/m3- 24 hour average.
Category Measured values Days (%)
Excellent <10% of the NES, (0-5µg/m³) 18 (30%)
Good 10-33% of the NES, (5-17µg/m³) 41 (70 %)
Acceptable 33-66% of the NES, (17-33 µg/m³) 0 (0%)
Alert
some deeply
buried seed may survive for up to 10 years or more. Seedlings can emerge from soil depths
6
page
Yellow Bristle Grass Ute Guide Third Edition
of up to 10 cm, but optimal germination is at 1–2 cm depth. Counts have shown seed
numbers up to 20,000/m2 but typically 5–10,000/m2 under light infestations.
YBG occurs in areas with adequate summer rainfall, usually where the annual rainfall
exceeds 500 mm per annum, although it can tolerate dry conditions once
Consents & Regulatory Committee agenda February 2022
Trustpower Motukawa hydro scheme consent monitoring report 2017-2018
supply and no discharge of
wastewater occurs to the stormwater drain. However, because the uncovered settlement ponds receive
stormwater both directly and as run off from certain areas of the site, an excess of water may enter the
page
11
system during heavy or sustained rainfall, or if rainfall occurs when the plant is not operating. This excess is
discharged via a sand filter prior to entering the NPDC stormwater system, which discharges to the
Mangaone Stream immediately
and lifestyle block
development also contributing.
The increase in the proportion of farmland used for dairying was most pronounced in
Canterbury and Southland.
The report notes that climate change is already affecting New Zealand’s land systems and
that we can expect ‘severe effects on land and human systems from long-term changes and
increased frequency of intense rainfall events.’ Some of the effects noted in the report include
changes to the suitability of land for horticulture and
potential that during rainfall runoff will pick up small amounts of hydrocarbons
and silt due to the nature of the activities on site;
• Stormwater which collects in the area surrounding the drilling platform and
ancillary drilling equipment. This stormwater has a higher likelihood of contact
with potential contaminants, particularly drilling mud;
• Produced water which flows from the producing formation and is separated
from the gas and liquid phase at the surface; and
• Drill cuttings,
about discharge of dust from the site. New Zealand Police were also notified
of the dust discharges due to the reduced visibility that motorists were experiencing
when commuting past the site.
[33] In response to the complaints, a Council Enforcement Officer undertook an
inspection of the site. A series of photographs and videos were taken by Council
Enforcement Officers and complainants. At the time of the inspection the weather was
clear, with no rainfall and a medium
Executive, Audit & Risk Committee agenda May 2021