11.1
The major site activities, potential
environmental impacts and recommended mitigation measures for the coming two months are shown in Table 11.1.
Table 11.1 Summary Table for Site
Activities, Potential Environmental Impacts and Recommended Mitigation Measures
in the coming Two Months
|
Contract No. |
Major Site Activities (January
and February 2021) |
Location/ Working Period |
Potential Environmental Impact |
Recommended Mitigation Measures |
|
ND/2019/01 |
(a)
Site
clearance |
Portion 1f, 2, 3,
5, 6a, 7, 9c, 10b, 14, 16 |
- Construction
Dust impact - Noise
Impact (Construction Phase) - Water
Quality Impact (Construction Phase) - Waste
Management (Construction Waste) |
Air -
Regular
watering on exposed worksites and haul road. -
Cover the
stockpiles or dusty materials. -
Deploy
water browsers to water the haul road. -
Deploy
mist-cannon on site -
Install
sprinkler system for dust suppression. -
Erect
scaffolding with dust screens for demolition of existing structure. -
Provide
shelter with top and 3-sides for cement production activities. -
Entirely
cover the Arsenic-containing soil. -
Store the
bulk cement in enclosed silo tank for Solidification / Stabilization
treatment. -
Close the
mechanical cover of the vehicles used for transporting dusty materials. -
Establish
vehicle wheel washing facilities at vehicle exit points. -
Speed
control of site vehicles. -
Shotcrete
on exposed slope. -
Erect solid
site hoarding. Noise -
Regular
inspect of construction plants in good condition -
Provide
temporary noise screens if necessary. -
Use of
Quiet plants (QPME) and working methods if possible. -
Sequencing
operation of construction plants where practicable. -
Shut down
the machines and plant if not in use. -
Only
well-maintained plant to be operated on-site. -
Mobile
plant to be sited as far away from NSRs as possible and practicable. -
Conduct
noise monitoring regularly. Water -
Re-circulation
/ re-use of water to minimize wastewater generation. -
Set up
wastewater treatment system (AquaSed) on site. -
Erect
soil bund / temporary drain to divert /collect surface runoff. -
Maintain
the drainage and wastewater treatment facilities. Waste
Management -
Sort out
demolition debris and excavated materials from demolition works to recover
reusable / recyclable portions. -
Provide
recycling bin on site, encourage reuse and recycle as much as possible. -
Provide
drip tray for chemical containers. -
Chemical
spill kit available on site. -
Chemical
waste cabinet available on site. -
Chemical
wastes to be stored in appropriate containers and collected by a licensed
chemical waste collector. -
Delivery
of yard waste to EcoPark for reuse. |
|
(b)
GI works |
Portion 2, 3, 5, 8a, 8b |
|||
|
(c)
Excavation |
Portion 6a, 10a |
|||
|
(d)
Construction
of temporary road |
Portion 7, 9b |
|||
|
(e)
Construction
of retaining wall |
Portion 8a |
|||
|
(f)
Sheetpiling |
Portion 6a, 10a |
|||
|
(g)
Soil
nailing / shotcrete |
Portion 2, 5, 6a, 8a |
|||
|
(h)
Construction
of CLC and site accommodation at Portion 7 |
Portion 7, 16 |
|||
|
(i)
Pre-bored
H pile |
Portion 6a |
|||
|
(j)
Pilot
trial for arsenic soil treatment works |
Portion 6b |
|||
|
ND/2019/02 |
(a)
GI |
Portion 1, 2 |
Air,
Water,Waste |
-
Dusty
works should be sprayed with water or idle stockpile or slope should be covered
by Tarpaulin sheet properly. -
Plants
should be well maintained to prevent dark smoke and oil leakage. Idle plant
should be turned off. -
Drip tray
should be provided for all chemical and stationary plants. -
No
construction works shall be carried out in restricted hours (7:00 pm to 7:00
am) unless CNP is obtained. -
Waste
should be sorted and disposed according to the Waste Management Plan -
No direct
discharge of wastewater into storm drains is allowed. Wastewater must be
de-silted before discharged in accordance with the water discharge licence. -
Dull
green barrier and ecological measures should be implemented according to the
Ecological protection plan. |
|
(b)
Tree Felling |
Portion 7, 10 |
Air,
Noise,Waste |
||
|
(c)
Trial Pit |
Portion 1, 2 |
Air, Noise,Water, Waste, |
||
|
(d)
Hoarding and Dull green barrier erection |
Portion 7, 9, 10 |
Air, Noise,Water, Waste |
||
|
(e)
Pre-bored Socketed H-pile |
Portion 7, 9, 10 |
Air, Noise, Water, Waste, Ecology |
||
|
ND/2019/03 |
(a)
Excavation of irrigation channel |
Long Valley |
- C&D waste - Air pollution - Noise pollution |
-
Watering
exposed earth regularly -
Cover
C&D material by tarpaulin -
Adopt
QPME for excavation |
|
(b)
Excavation
of trench in Yin Kong Road |
Portion 1 and Portion 1A |
- C&D waste - Air pollution - Noise pollution - Water pollution |
-
Watering
exposed earth regularly -
Cover
C&D material by tarpaulin -
Noise
barrier for screening from source of noise -
Wastewater
will be treated before discharging to channel |
|
|
(c)
Demolition
of existing structure |
Long Valley |
- C&D material - Air Pollution |
-
Cover
C&D material by tarpaulin -
Watering while
demolish the structure |
|
|
(d)
Construction
works of storage shed and Type 2 Storage House |
Long Valley |
- C&D material - Air Pollution |
-
Watering
exposed earth regularly -
Cover
C&D material by tarpaulin |
|
|
(e)
Asbestos
Removal in Long Valley |
Long Valley |
- Air Pollution |
-
Removing
the asbestos containing material according to requirement of COP |
|
|
ND/2019/05 |
(a)
Ground investigation works |
D32. D28, D38, D39, DH024 and slope GI at Tai Wo Service Road West, Jockey Club Road |
- Construction Dust Impact - Noise Impact - Water Quality Impact
(Construction Phase) - Waste Management (Construction Waste) |
-
Regular
watering on exposed worksites and haul road -
stockpiling
area should be provided with covers and water spraying system -
only
well-maintained plant to be operated on-site -
plant
known to emit noise strongly in one direction, where possible, be orientated
so that the noise is directed away from nearby NSRs; -
mobile
plant to be sited as far away from NSRs as possible practicable -
All open
stockpiles of construction materials
of more than 50m3 to be covered with tarpaulin -
Manholes
to be adequately covered and temporarily sealed so as to prevent silt,
construction materials or debris being washed into the drainage system -
All
vehicles and plant to be cleaned before leaving a construction site to ensure
no earth, mud, debris and the like is deposited by them on roads. -
Segregate
and store different types of waste in different containers, skip or
stockpiles to enhance reuse or recycling of materials and their proper
disposal -
Sort out
demolition debris and excavated materials from demolition works to recover
reusable/recyclable portions -
Provide
training to workers on appropriate waste management procedures, including
waste reduction, reuse and recycling -
To adopt
other good site practice, such as arrangements for collection and effective
disposal to an appropriate facility, of all wastes generated at the site and
regular cleaning and maintenance programme for drainage -
Chemical wastes
to be stored in appropriate containers and collected by a licensed chemical
waste Contractor. Chemical wastes (e.g. spent lubricant oil) should be
recycled at an appropriate facility as far as possible, while the chemical
waste that cannot be recycled should be disposed of at either the Chemical
Waste Treatment Centre, or another licensed facility, in accordance with the
Waste Disposal (Chemical Waste) (General) Regulation -
Conducting
Construction Vibration Monitoring -
Tree Protection & Preservation – Exiting
trees to be retained within the Project site should be carefully protected
during construction. In particular OVTs will be preserved according to ETWB
Technical Circular (Works) No. 29/2004. -
Tree Transplantation – Tree unavoidably affected
by the Project works should be transplanted where practical. Tree should be
transplanted straight to their final receptor site and not held in a
temporary nursey as far as possible. -
Erect 2m high dull green site boundary fence. -
Light Control – Construction day and night time
should be controlled to minimize glare impact to adjacent VSRs during the
Construction phase. |
|
(b)
Pre drilling for bored piles |
C4-03, D1 and E1 |
|||
|
(c)
Bored piling |
C3-03, C3-04, C4-03, C4-04, E2-02, D2-02, E3-02 and E3-03 |
|||
|
(d)
Socketed H-pile installation |
Ho Ka Yuen Footbridge |
|||
|
(e)
Construction of haul road |
D2-02 |
|||
|
(f)
Construction of Footpath |
Jockey Club Road |
|||
|
(g)
Site formation |
Portion Xlll |
|||
|
(h)
Utitilies Diversion Works |
TWSRW |
|||
|
(i)
Project Manager’s Site Accommodation Construction |
Works Area A |
|||
|
(j)
Tree Transplant |
Works Area A |
|||
|
(k)
TTA |
Jockey Club Road |
|||
|
(l)
Drainage & Water Mains construction |
Box culvert BC5, TWSRE |
|||
|
(m)
Temporary removal of noise barrier and sign
gantry |
D2-03
at Fanling Highway |
|||
|
ND/2019/06 |
(a)
Construction of finishing works, E&M works and Building Services works of Management Office Building (MOB) |
Portion 4 |
- Noise pollution -
Water
pollution |
-
Adopt
noise barrier in screening noise -
Wastewater
generated after wheel washing of vehicles
should be treated properly before discharge |
|
(b)
Installation of steel canopy
column |
Portion
3 |
- Noise pollution |
-
Adopt
noise barrier in screening noise |
|
|
(c)
Construction of underground utilities in
the final stage market |
Portion 3 |
- C&D waste - Air pollution - Noise pollution - Water pollution |
-
Cover
C&D waste by impervious sheeting -
Spray
with water to work area before, during and after the work -
Adopt
QPME for excavator -
Wastewater
generated after wheel washing of vehicles should be treated properly before
discharge |
|
|
(d)
Formation of
carriageway and footway |
Portion 3 |
- C&D waste - Noise pollution |
-
Cover
C&D waste by impervious sheeting -
Adopt
noise barrier in screening noise |
|
|
(e)
Slope improvement
works |
Portion 6 |
- C&D waste - Air Pollution -
Noise
Pollution |
-
Cover
C&D waste by impervious sheeting -
Spray
with water to work area before, during and after the work -
Adopt
QPME for excavator |
|
|
Contract No. |
Major Site Activities (January
and February 2021) |
Location/ Working Period |
Potential Environmental Impact |
Recommended Mitigation Measures |
|
ND/2019/01 |
(k)
Site
clearance |
Portion 1f, 2, 3,
5, 6a, 7, 9c, 10b, 14, 16 |
- Construction
Dust impact - Noise
Impact (Construction Phase) - Water
Quality Impact (Construction Phase) - Waste
Management (Construction Waste) |
Air -
Regular watering
on exposed worksites and haul road. -
Cover the
stockpiles or dusty materials. -
Deploy
water browsers to water the haul road. -
Deploy
mist-cannon on site -
Install
sprinkler system for dust suppression. -
Erect
scaffolding with dust screens for demolition of existing structure. -
Provide
shelter with top and 3-sides for cement production activities. -
Entirely
cover the Arsenic-containing soil. -
Store the
bulk cement in enclosed silo tank for Solidification / Stabilization
treatment. -
Close the
mechanical cover of the vehicles used for transporting dusty materials. -
Establish
vehicle wheel washing facilities at vehicle exit points. -
Speed
control of site vehicles. -
Shotcrete
on exposed slope. -
Erect
solid site hoarding. Noise -
Regular
inspect of construction plants in good condition -
Provide
temporary noise screens if necessary. -
Use of
Quiet plants (QPME) and working methods if possible. -
Sequencing
operation of construction plants where practicable. -
Shut down
the machines and plant if not in use. -
Only
well-maintained plant to be operated on-site. -
Mobile
plant to be sited as far away from NSRs as possible and practicable. -
Conduct
noise monitoring regularly. Water -
Re-circulation
/ re-use of water to minimize wastewater generation. -
Set up wastewater
treatment system (AquaSed) on site. -
Erect
soil bund / temporary drain to divert /collect surface runoff. -
Maintain
the drainage and wastewater treatment facilities. Waste
Management -
Sort out
demolition debris and excavated materials from demolition works to recover
reusable / recyclable portions. -
Provide
recycling bin on site, encourage reuse and recycle as much as possible. -
Provide
drip tray for chemical containers. -
Chemical
spill kit available on site. -
Chemical
waste cabinet available on site. -
Chemical
wastes to be stored in appropriate containers and collected by a licensed
chemical waste collector. -
Delivery
of yard waste to EcoPark for reuse. |
|
(l)
GI works |
Portion 2, 3, 5, 8a, 8b |
|||
|
(m)Excavation |
Portion 6a, 10a |
|||
|
(n)
Construction
of temporary road |
Portion 7, 9b |
|||
|
(o)
Construction
of retaining wall |
Portion 8a |
|||
|
(p)
Sheetpiling |
Portion 6a, 10a |
|||
|
(q)
Soil
nailing / shotcrete |
Portion 2, 5, 6a, 8a |
|||
|
(r)
Construction
of CLC and site accommodation at Portion 7 |
Portion 7, 16 |
|||
|
(s)
Pre-bored
H pile |
Portion 6a |
|||
|
(t)
Pilot
trial for arsenic soil treatment works |
Portion 6b |
|||
|
ND/2019/02 |
(f)
GI |
Portion 1, 2 |
Air,
Water,Waste |
-
Dusty
works should be sprayed with water or idle stockpile or slope should be
covered by Tarpaulin sheet properly. -
Plants should
be well maintained to prevent dark smoke and oil leakage. Idle plant should
be turned off. -
Drip tray
should be provided for all chemical and stationary plants. -
No
construction works shall be carried out in restricted hours (7:00 pm to 7:00
am) unless CNP is obtained. -
Waste
should be sorted and disposed according to the Waste Management Plan -
No direct
discharge of wastewater into storm drains is allowed. Wastewater must be
de-silted before discharged in accordance with the water discharge licence. -
Dull
green barrier and ecological measures should be implemented according to the
Ecological protection plan. |
|
(g)
Tree Felling |
Portion 7, 10 |
Air,
Noise,Waste |
||
|
(h)
Trial Pit |
Portion 1, 2 |
Air, Noise,Water, Waste, |
||
|
(i)
Hoarding and Dull green barrier erection |
Portion 7, 9, 10 |
Air, Noise,Water, Waste |
||
|
(j)
Pre-bored Socketed H-pile |
Portion 7, 9, 10 |
Air, Noise, Water, Waste, Ecology |
||
|
ND/2019/03 |
(f)
Excavation of irrigation channel |
Long Valley |
- C&D waste - Air pollution - Noise pollution |
-
Watering
exposed earth regularly -
Cover
C&D material by tarpaulin -
Adopt
QPME for excavation |
|
(g)
Excavation
of trench in Yin Kong Road |
Portion 1 and Portion 1A |
- C&D waste - Air pollution - Noise pollution - Water pollution |
-
Watering
exposed earth regularly -
Cover
C&D material by tarpaulin -
Noise barrier
for screening from source of noise -
Wastewater
will be treated before discharging to channel |
|
|
(h)
Demolition
of existing structure |
Long Valley |
- C&D material - Air Pollution |
-
Cover
C&D material by tarpaulin -
Watering
while demolish the structure |
|
|
(i)
Construction
works of storage shed and Type 2 Storage House |
Long Valley |
- C&D material - Air Pollution |
-
Watering
exposed earth regularly -
Cover
C&D material by tarpaulin |
|
|
(j)
Asbestos
Removal in Long Valley |
Long Valley |
- Air Pollution |
-
Removing the
asbestos containing material according to requirement of COP |
|
|
ND/2019/05 |
(n)
Ground investigation works |
D32. D28, D38, D39, DH024 and slope GI at Tai Wo Service Road West, Jockey Club Road |
- Construction Dust Impact - Noise Impact - Water Quality Impact (Construction
Phase) - Waste Management (Construction Waste) |
-
Regular
watering on exposed worksites and haul road -
stockpiling
area should be provided with covers and water spraying system -
only
well-maintained plant to be operated on-site -
plant
known to emit noise strongly in one direction, where possible, be orientated
so that the noise is directed away from nearby NSRs; -
mobile
plant to be sited as far away from NSRs as possible practicable -
All open
stockpiles of construction materials
of more than 50m3 to be covered with tarpaulin -
Manholes
to be adequately covered and temporarily sealed so as to prevent silt,
construction materials or debris being washed into the drainage system -
All
vehicles and plant to be cleaned before leaving a construction site to ensure
no earth, mud, debris and the like is deposited by them on roads. -
Segregate
and store different types of waste in different containers, skip or
stockpiles to enhance reuse or recycling of materials and their proper
disposal -
Sort out
demolition debris and excavated materials from demolition works to recover
reusable/recyclable portions -
Provide
training to workers on appropriate waste management procedures, including
waste reduction, reuse and recycling -
To adopt
other good site practice, such as arrangements for collection and effective
disposal to an appropriate facility, of all wastes generated at the site and
regular cleaning and maintenance programme for drainage -
Chemical
wastes to be stored in appropriate containers and collected by a licensed
chemical waste Contractor. Chemical wastes (e.g. spent lubricant oil) should
be recycled at an appropriate facility as far as possible, while the chemical
waste that cannot be recycled should be disposed of at either the Chemical
Waste Treatment Centre, or another licensed facility, in accordance with the
Waste Disposal (Chemical Waste) (General) Regulation -
Conducting
Construction Vibration Monitoring -
Tree Protection & Preservation – Exiting
trees to be retained within the Project site should be carefully protected
during construction. In particular OVTs will be preserved according to ETWB
Technical Circular (Works) No. 29/2004. -
Tree Transplantation – Tree unavoidably affected
by the Project works should be transplanted where practical. Tree should be
transplanted straight to their final receptor site and not held in a
temporary nursey as far as possible. -
Erect 2m high dull green site boundary fence. -
Light Control – Construction day and night time
should be controlled to minimize glare impact to adjacent VSRs during the
Construction phase. |
|
(o)
Pre drilling for bored piles |
C4-03, D1 and E1 |
|||
|
(p)
Bored piling |
C3-03, C3-04, C4-03, C4-04, E2-02, D2-02, E3-02 and E3-03 |
|||
|
(q)
Socketed H-pile installation |
Ho Ka Yuen Footbridge |
|||
|
(r)
Construction of haul road |
D2-02 |
|||
|
(s)
Construction of Footpath |
Jockey Club Road |
|||
|
(t)
Site formation |
Portion Xlll |
|||
|
(u)
Utitilies Diversion Works |
TWSRW |
|||
|
(v)
Project Manager’s Site Accommodation Construction |
Works Area A |
|||
|
(w)
Tree Transplant |
Works Area A |
|||
|
(x)
TTA |
Jockey Club Road |
|||
|
(y)
Drainage & Water Mains construction |
Box culvert BC5, TWSRE |
|||
|
(z)
Temporary removal of noise barrier and sign
gantry |
D2-03
at Fanling Highway |
|||
|
ND/2019/06 |
(f)
Construction of finishing works, E&M works and Building Services works of Management Office Building (MOB) |
Portion 4 |
- Noise pollution -
Water
pollution |
-
Adopt
noise barrier in screening noise -
Wastewater
generated after wheel washing of vehicles
should be treated properly before discharge |
|
(g)
Installation of steel canopy
column |
Portion
3 |
- Noise pollution |
-
Adopt noise
barrier in screening noise |
|
|
(h)
Construction of underground utilities in
the final stage market |
Portion 3 |
- C&D waste - Air pollution - Noise pollution - Water pollution |
-
Cover
C&D waste by impervious sheeting -
Spray with
water to work area before, during and after the work -
Adopt
QPME for excavator -
Wastewater
generated after wheel washing of vehicles should be treated properly before
discharge |
|
|
(i)
Formation of
carriageway and footway |
Portion 3 |
- C&D waste - Noise pollution |
-
Cover
C&D waste by impervious sheeting -
Adopt
noise barrier in screening noise |
|
|
(j)
Slope
improvement works |
Portion 6 |
- C&D waste - Air Pollution -
Noise
Pollution |
-
Cover
C&D waste by impervious sheeting -
Spray with
water to work area before, during and after the work -
Adopt
QPME for excavator |
11.2
The major site activities in coming two months
is shown in Table IV.
11.3
The tentative environmental monitoring schedule
for the next month is shown in Appendix
D.
11.4
A tentative construction programme is provided
in Appendix A.