9.1
Major
site activities undertaken for the coming months include:
Portion A
1.
General Cleaning
Portion B
1.
Internal Finishing &
E&M Works for Subway A
2.
Installation of Steel Roof,
3.
Construction of Resting Station
R6
4.
Construction of Cycle Track
5.
Construction of Drainage
Portion C
1.
Planting,
2.
Installation of water point
Portion D
1.
Construction of Planter Wall
PWD1
2.
Backfilling for Retaining Wall
15D, 15E, 16A & PWD1
3.
Construction of Drainage Pipe /
Channel
4.
Construction of Road Kerb
5.
Laying Bituminous Pavement for
Cycle Track
6.
Installation of Bicycle Parapet
Portion E
1.
Construction of Retaining RW
D3, D5 & Access Ramp
2.
Realignment of San Tam Road and
Mai Po Lung Road
3.
Construction of Road Kerb
4.
Laying Bituminous for Cycle
Track
5.
Installation of Bicycle Parapet
and Railing
6.
Construction of Footpath
7.
Construction of Drainage Pipe /
Channel
8.
CCTV for Drainage Pipe
Portion F
1.
Construction of Boundary Wall
and Retaining Wall RW 44
2.
Backfilling for Retaining Wall
3.
Construction of Road Kerb
4.
Laying Bituminous for Cycle
Track
5.
Installation of Bicycle Parapet
and Railing
6.
Construction of Footpath
7.
Construction of Drainage Pipe /
Channel
8.
Installation of Traffic Aids
9.
CCTV for Drainage Pipe
Portion G
1.
Installation of Traffic Aids
2.
Colour Dressing for Cycle Track
Portion H
1.
Construction of Retaining Wall
RW DW1 & DW2
2.
Backfilling for Retaining Wall
3.
Construction of Road Kerb
4.
Laying Bituminous for Cycle
Track
5.
Installation of Bicycle Parapet
and Railing
6.
Construction of Drainage Pipe /
Channel
7.
Construction of Cross Ducting
for Traffic Signal
8.
Realignment of Castle Peak Road
Portion I
1.
Internal Finishing &
E&M Works for Subway D
2.
Installation of Steel Roof,
3.
Installation of Flooding
Warning System
4.
Reinstate the Existing Slope
and Carriageway, Removal of Temporary Steel Bridge of TTA
5.
Construction of Drainage / Channel
Portion J
1.
Construction of Drainage /
Channel
2.
Construction of Road Kerb
3.
Laying Bituminous Pavement for
Cycle Track
4.
Installation of Bicycle Parapet
and Type II Railing
Portion K
1.
Installation of Traffic Aids
Portion M
1.
Installation of Lighting for
Bridge E
2.
Laying Bituminous Pavement for
Cycle Track
3.
Installation of Bicycle Parapet
/ Railing
4.
Construction of Road Kerb
Portion N
1.
Construction of Decking for
Bridge B
2.
Construction of Retaining Wall
9.2
Key
environmental issues in the coming months include:
·
Wastewater
and runoff generation on-site;
·
Regular
removal of silt, mud and sand along u-channels and inside sedimentation tanks;
·
Review
and implementation of temporary drainage system for the surface runoff;
·
Noise
from operation of the equipment, especially for excavation works and machinery
on-site;
·
Dust
generation from stockpiles of dusty materials, exposed site area, excavation
works and other dust-generating activities;
·
Water
spraying for dust generating activities and on haul road;
·
Proper
storage of construction materials on-site;
·
Storage
of chemicals/fuel and chemical waste/waste oil on-site;
·
Accumulation
of general refuse and construction waste on-site; and
·
Protection
measures for retained trees.
9.3
The
tentative program of major site activities and the impact prediction and
control measures for the coming months, i.e. February to March 2020, are
summarized as follows:
|
Construction Works |
Major Impact Prediction |
Control Measures |
|
As
mentioned in Section 9.1 |
Air
quality impact (dust) |
(a)
Frequent watering
of haul road and unpaved/exposed areas; (b)
Frequent watering
or covering stockpiles with tarpaulin or similar means; and (c)
Watering of any
earth moving activities. |
|
Water quality
impact (surface run-off) |
(d)
Diversion of the
collected effluent to de-silting facilities for treatment in compliance with
valid Discharge License prior to discharge to public storm water drains; (e)
Provision of
adequate de-silting facilities for treating surface run-off and other
collected effluents prior to discharge; (f)
Provision of
perimeter protection such as sealing of hoarding footings to avoid run-off
from entering the existing storm water drainage system via public road; and (g)
Provision of
measures to prevent discharge into the stream. |
|
|
Noise
impact |
(h)
Scheduling of noisy
construction activities if necessary to avoid persistent noisy operation; (i)
Controlling the
number of plants use on site; (j)
Regular maintenance
of machines (k)
Use of quiet PMEs
on-site; and (l)
Use of acoustic
barriers and noise enclosure if necessary. |
|
|
Landscape
and Visual |
(m)
Proper setup of
precautionary area for retained trees. |
9.4
The
tentative environmental monitoring schedules for the next month are shown in Appendix D.