Project Hurunui Wind Construction and Project Overview

Project Hurunui Wind Construction Effects and Management Report
rehabilitation throughout the
construction phase.
Environmental Management
Plans to control erosion and
treat sediment run-off.
pavement may be provided. This will
provide a clean running/working surface
as well as minimise erosion.
Turbine platforms will be rehabilitated upto
the edge of basecourse hardstand areas
with appropriate ground cover after
construction.
Sediment Run-off
Discharges to the
Cave and Motunau
Catchment Areas
Avoid where possible by
redirecting works and/or
discharges from sediment
control structures to northern
(including Tipapa) catchments
assessed as having lower
comparable ecological values.
Ensure specific erosion and
sediment controls at fill site just
north of Turbine D5, in particular
Some potential fill areas and lay down
areas will involve the removal of existing
topsoil and vegetation. The measures
outlined in this report will ensure that these
fill sites and lay down areas are blended
back into the existing environment
following their rehabilitation.
In the likely event that an on-site batching
plant is deployed, an SEMP will be
developed to outline measures to manage
any dust, sediment, cement and wash
water discharges. Such measures are
likely to include cement storage within a
silo, aggregate storage bins, a temporary
concrete slab beneath the loading area
and containment bunding around the
plant.
Appropriate substation design such as
bunding and interceptor tanks will ensure,
in the unlikely event of transformer oil
spillage, that the risk of oil discharge is
low.
Sewerage and waste water from the
services building will be directed to a
septic tank. Flows are expected to be low.
In areas where the construction works
border catchments, road alignments and
fill sites can be adjusted to remain within
catchments with lower comparable
ecological values.
The draft SEMP details specific measures
at this area.
5C-1604.02
February 2011 56